Physics: Sound, Light, Thermal, Energy Flash Cards

Front 1

Define sound energy

Back 1

Sound energy: vibrations of particle matters (solid liquid gas) that moves in waves and can be heard

Front 2

Vibrations: repeating back and forth movement

Back 2

When any object vibrates, it causes movement of other particles near it

These particles bump into the particles close to them, which makes them vibrate, too, causing them to bump into even more particles.

Front 3

True or false: Sound waves is a form of kinetic energy

Back 3

TRUE! Sound waves is a form of kinetic energy, not potential energy

Front 4

True or False: sound wave is a form of mechanical energy

Back 4

True. Since sound waves belong to kinetic energy, it also belongs to mechanical energy

Front 5

Why do our ears hear sound ?

Back 5

Our ears heard sound because they are in range (near) the vibrations!

Front 6

Vibration of air molecules result in compressions of air molecules

Back 6

Front 7

Visualization of sound as a wave function

Back 7

As you can see, the dark bands represent the compressions of sound wave , which also represent as highest points in the wave known as crest

Dark bands = compressions = crests

Front 8

True or False: sound is controlled by the characteristics of the waves and the materials they travel through

Back 8

True! Sound is controlled by the type of waves (short or long waves) and the medium it goes through

Example: sounds travel in water

Front 9

Short sound

Back 9

Sustained sound

Front 10

True or false: sounds are waves that are passing along like dominoes by vibrating and bumping into each other

Back 10

True!

Front 11

Higher density of material = higher speed or higher velocity that sound is traveling .

More molecules packing or grouping together (e.g solid) = faster sound speed

Back 11

Density: Rock (solid) > water (liquid)> air (gas) > plasma > vacuum (in space)

Sounds will travel faster in rock than in water. Sound will travel faster in water than in air . Sound will not travel at all in vacuum cuz no molecules

Front 12

As you can see sounds travel fastest in aluminum (solid).

Base on the graph of sound-s speed: Aluminum > glass > wood > water > dry air

Back 12

Higher temperature will also lead to higher speed or velocity of sound traveling !

Front 13

True or false: lower temperature result in faster speed of sound wave

Back 13

FALSE! Higher temperature will result in higher sound speed. Lower temperature results in slower sound speed.

Ex: sound travels faster in boiling water than in room temperature water!

Front 14

Sound can only move through a medium (matter). If there are no particles of matter present (like in a vacuum as in outer space) there is no sound. Ex: astronauts make no sounds in space!

Space = vacuum = no molecules = no sound!

Back 14

Tree falls in forest = have molecules in air and in the ground = have sound

Astronaut in space =vacuum= no molecule= no sound even if he claps

Front 15

Back 15

Front 16

Back 16

Front 17

What is wavelength?

Back 17

Wavelength is the distance from one point on a wave to the same point on the next wave

It can be between two crests (like in this picture denoting segment A), or between two troughs, or anywhere in between crest or trough

Front 18

What is a trough ?

Back 18

Trough: lowest point of the wave . In this picture point B is a trough

Also, trough is found halfway between compressions

Trough = lowest pressure

Front 19

Halfway between compressions is known as a ________

Back 19

A trough = halfway between compressions, as shown with red vertical lines

Front 20

Region with lowest pressure is known as a ____

Back 20

Trough: region with lowest pressure

Front 21

Lowest point on a wave function known as a ____

Back 21

Trough: a lowest point on a wave function

Front 22

Remember: trough = lowest point on the wave fuction = region of lowest pressure = halfway between compressions

Back 22

Trough = lowest point = lowest pressure = halfway (1/2) between compressions

Front 23

What is a crest?

Back 23

A crest is the highest point of the wave or wave function as at point C

A crest is also a region of highest pressure

A crest is also where a compression is located (or where a compression is at)

Front 24

Highest point in the wave function known as a ____

Back 24

Crest: highest point in the wave function

Front 25

A region of highest pressure is known as a ____

Back 25

Crest: a region of highest pressure

Front 26

This can be found at region of compression

Back 26

CREST can be found at region of compression

Front 27

Crest = highest point on wave function = higher pressure region = where compression can be found

Back 27

Crest = highest point = highest pressure = compressions

Front 28

What is amplitude?

Back 28

Amplitude: the height of a wave from the midline to the highest point or tobthe loeest point, as shown with D's height

Amplitude = half way (1/2) from crest to trough , or half distance from crest to trough

Front 29

the height of a wave from the midline to the highest point is known as a _____

Back 29

Amplitude: the height of a wave from the midline to the highest point

Front 30

What is a midline?

Back 30

Midline is the x-axis on the wave function or diagram . In the picture, E is the midline

Front 31

Define frequency

Back 31

Frequency is a rate: the number of complete waves that pass by a point in a given amount of time (usually 1 second)

Frequency unit is Hertz

1 Hertz = 1 cycle per sec (cycle/sec)

In this wave function, the frequency is 3Hz because there are 3 completed cycle in 1 sec

Front 32

True or False: 4 Hertz means there are 4 completed cycles in 1 sec

Back 32

True. 4 Hertz means there are 4 completed cycles in 1 sec

Front 33

If there are 6 completed cycles passed in 2 secs on a wave function, what is its frequency?

Back 33

Frequency is counted as completed cycles in 1 sec. Since there are 6 cycles in 2 sec, half of 2 sec is 1 sec which mean half of 6 is 3. The frequency is 3 Hertz

Front 34

If there are 5 completed cycles passed in 0.5 secs on a wave function, what is its frequency?

Back 34

Frequency is counted as completed cycles in 1 sec. Since there are 5 cycles in 0.5 sec, twice of 0.5 sec is 1 sec which mean twice of 5 is 10. The frequency is 10 Hertz

Front 35

What is frequency's unit ?

Back 35

Hertz, or # of cycles per 1 sec

Front 36

The numbers of completed cycles per 1 second is known as ?

Back 36

Hertz, or frequency

Front 37

What is a pitch ?

Back 37

Front 38

True or False: The faster the wave the slower the pitch

Back 38

False! The faster the wave the faster the pitch

Front 39

True or false: The smaller the pitch, the smaller the frequency

Back 39

True!

Front 40

True or False: The higher the frequency, the higher the pitch

Back 40

True

Also:

Faster wave = higher pitch = higher frequency

Front 41

Back 41

Answer: A . Faster high frequency wave has more energy

Front 42

What is a volume ?

Back 42

Volume is how LOUD a sound is or how SOFT a sound is

Volume is related to amplitude (goes in the same direction)

Higher volume means higher amplitude means LOUD sound

Lower volume means lower amplitude means SOFTER sound

Volume = amplitude =loud/soft sound = larger/smaller wave

Front 43

Remember:

Faster or slower wave is DIFFERENT than larger wave or smaller wave

Back 43

Fast or slow wave = frequency = pitch (faster/slower)

Larger or smaller wave = amplitude = volume (soft/loud)

Front 44

________ controls the amplitude of the wave?

Back 44

Volume controls the amplitude of the wave

Front 45

True or false: Softer sound means larger amplitude look

Back 45

False. Softer sound = smaller volume = smaller amplitude

Front 46

True or false: LOUD sound means larger amplitude

Back 46

True

Front 47

Remember, amplitude has NOTHING to do with pitch. It has to do with Volume

Larger amplitude = loud volume = larger sound

Smaller amplitude = soft volume = smaller sound

Soft= smaller

Loud = larger

Back 47

Frequency has NOTHING to do with VOLUME. It has to do with pitch

Larger frequency = higher pitch = faster wave=

Smaller frequency = lower pitch = slower wave

Front 48

Light energy (LE): aka Electromagnetic radiation. It is a form of energy made of photons(massless) that are travel in waves, some of which are visible

Back 48

Photons: massless particles that travel in waves

Photons are NOT protons

Front 49

Type of light waves:

1) long wavelengths: travel slowly

Ex: radio wavelength:100km long (100,000m)

2) short wavelengths: travel fast

Ex: gamma wavelength: 1x10^-12m

(0.000000000001m)

Back 49

All wavelengths of light made up of electromagnetic spectrum

Front 50

Gamma waves are examples of _____

Back 50

Gamma waves are examples of very short wavelengths

Front 51

Radio wavelengths are example of ____

Back 51

Radio wavelengths are example of very long wavelengths

Front 52

True or False: electromagnetic spectrum consist of certain wavelengths (very short or very long)

Back 52

False! electromagnetic spectrum consist of ALL wavelengths

Front 53

Different types of wavelengths and examples

Back 53

As you can see,

The ones with very long wavelengths tend to be a) very slow travel b) lower energy c) slow frequency and d) very cool temperature

The one with with very short wavelengths a) travel fast b)high energy c) high frequency and d) very hot temperatures

Front 54

Can light travel in space ?

Back 54

Yes. Light or light wave can travel in space AND in vacuum because they (photons) do not require matter to move

Sound wave cannot travel in vacuum or space because they require matters to vibrate

Front 55

3 ways of light: Reflection, Refraction, and Absorption (RRA acronym)

Back 55

Front 56

What is reflection?

Back 56

Reflection occurs when light rays bounced off a surface that they cannot travel through

Reflection depends on how smooth the surface:

A. Smooth surface:

Examples: aluminum foil, mirrors, still water

B.rough surface: scattered lights, not complete images. Ex: most surfaces are rough surface, mountains

Front 57

Does rough surfaces reflect images?

Back 57

NO, rough surfaces SCATTERED images

Front 58

Does smooth surface reflect images?

Back 58

Yes, smooth surface reflect and does not scattered images.

Front 59

When a light ray bounded off a surface it is called a____

Back 59

When a light ray bounded off a surface it is called a reflection

Smooth (still water) vs rough surface (moving water)

Front 60

Mirror, aluminum foils, and still water are examples of ?

Back 60

Mirror, aluminum foils, and still water are examples of smooth surfaces

Front 61

Most surfaces, moving water, and mountains are examples of ?

Back 61

Most surfaces, moving water, and mountains are examples of rough surfaces

Front 62

What is refraction ?

Back 62

Refraction: the bending of light when it passes into new medium

Front 63

True or False: Light waves change speed when they travel through different medium or different phases of matter

Back 63

True. Light waves change speed when they travel through different medium or different phases of matter

Examples: a straw in a glass of soda, glass prism

Front 64

What happen with refraction in a straw in a glass of soda ?

Back 64

Light waves bend as they travel through the air (gas), soda (liquid), and glass (solid) resulting in refraction. That is why the straw looks distorted!

Front 65

What happen to refraction when light travel to a prism?

Back 65

Glass Prism: Triangular piece of glass or plastic. Light waves is splitted into different wavelengths of visible light travel at different speeds through the solid and create a rainbow of colors when they exit

Front 66

Light enters the prism and got splitted into different colors at the other end. This process is called____

Back 66

Refraction

Front 67

The straws looks bend when it enters the water. This process is called ____

Back 67

Refraction

Front 68

What is absorption?

Back 68

Absorption occurs when an object takes in light waves

Photons with certain wavelengths are absorbed until the matter

Front 69

Can atoms absorbs the light ?

Back 69

Yes, they can abosrppted the light and become excited and vibrate

Wavelength can only be absorbed if they they match the distance between electron shells in the atoms or molecules just like elevator

Front 70

Processes of atom absorbing lights:

Normal atom --> light absorbed into atoms --> excited atom ---> atom returns to normal and emitting lights

Back 70

As atoms or particles absorbing light, vibrations increases and temperature increases

Front 71

True or False: temperature and vibration of the object increases when it absorbs light.

Back 71

True. Temperature and vibrating of the object increases when it absorbs light.

Front 72

Thermal radiation: light energy can be transformed into heat or thermal energy

Back 72

Front 73

Back 73

Front 74

Back 74

Front 75

What are visible light?

Back 75

Visible light = Visible spectrum = white light= broken into rainbow colors via a prism

Visible light: also known as white light. It is what our eyes see: white lights.

White light are broken into rainbow colors

Front 76

Visible light = White light = Visible spectrum

Back 76

As you can see from the picture, white lights enter the prism and is being splitted into rainbow colors (ranging from low energy light colors to high energy light colors)

Front 77

Example of visible lights and questions

Back 77

Front 78

What are rainbows?

Back 78

Rainbows are made when light is being refracted and reflected

Front 79

Does light travel faster or slower in higher density material?

Back 79

Light travel slower in higher density materials

Less dense (air): light travels faster

More dense (water): light travels slower

Front 80

How are rainbows formed ?

Back 80

Front 81

What make objects appear as different colors ?

Back 81

Objects appear as different color due to absorption and reflection. The wavelengths of light that are not absorbed are reflected off an object are what we see

Front 82

The colors we see are the light wavelengths that are reflected and not absorbed of an object

Back 82

Front 83

True or false : The "green" grass that we see is due to the grass absorbed all colors of lights (wavelengths) except green color. That green color is reflected

Back 83

True . The color of object is due to that object absorbed ALL the wavelengths of colors except the color on its object. That color is being Reflected

Front 84

Why does wearing dark-colored clothing on sunny day make us feel warmer than wearing light-colored clothing?

Back 84

Because dark-colored cloth absorbs the light energy and makes us feel warmer

Light-colored cloth reflects the light energy and makes us feel cooler

Front 85

In the sun is about 10-15C (18-26F) warmer than the shade

Black color in the sun is about 5C(10F) warmer than the white color in the sun

Back 85

Transformation of light energy into thermal energy (TE) or heat depends on how much is absorbed or reflected

Front 86

True or False: Black objects absorbed all wavelengths of visible light and white objects reflected all wavelengths of visible light.

Back 86

True !

When you wear a black shirt, you'll get warmer because all wavelengths of light are being absorbed

When you wear white shirt, it'll get cooler because all wavelengths are reflected

Front 87

True or False :

Black object = all light absorption = cooler temperature

White object = all light reflection = hotter temperature

Back 87

True

Black object = all light absorption = cooler temperatureWhite object = all light reflection = hotter temperature

Front 88

True or False: Black color means all light are reflected

Back 88

False. Black color means all light are absorbed

Front 89

True or False: Black color means lower temperature

Back 89

True because black color reflects all the light, hence lowering the overall temperature

Front 90

Back 90

Front 91

What is thermal energy(TE) ?

Back 91

Thermal energy is a type of energy measured as heat and produced when atoms and molecules vibrate and move

Temperature is just a measurement of how fast molecules are moving, so temperature is a measure of how much thermal energy or heat that a substance has.

Thermal energy can move from one substance or object to another

Front 92

True or false: Thermal energy always moves from warmer to colder )

Back 92

True. If you hold an ice cube on your warm hand, the heat from your hand will move to the ice cube and melt it

Front 93

Add heat and energy to the system will increase temperature and motion and lead to change of phase from solid to liquid to gas

Back 93

Remove heat and energy from the system will decrease temperature and motion and lead to change of phase from gas to liquid to solid

Front 94

Back 94

Front 95

What is radiation ?

Back 95

Radiation is the energy that is sent out and can move through space as infrared electromagnetic wave (EM)

Radiation = EM = sunlight

Front 96

Atoms and molecules give off electromagnetic (EM) wave at their vibration frequencies = infrared radiation (IR)

Back 96

Absorbed EM waves, including IR, makes particles vibrate more, increasing their heat

Front 97

Conduction vs convection vs radiation

Back 97

Front 98

True or False : Faster vibration = higher frequency = higher energy = higher temperature = higher heat

Back 98

True. Faster vibration = higher frequency = higher energy = higher temperature = higher heat

Front 99

True or False:

Short wavelengths = high energy

Long wavelengths = low energy

Back 99

True : Short wavelengths = high energy . Long wavelengths = low energy

Front 100

Short wavelengths = higher energy = higher temperature = higher frequency = higher or faster vibrations = higher heat

Examples: ultraviolet (below violet range), x-ray, gamma ray

Back 100

Long wavelengths = lower energy = lower temperature = lower frequency = lower or slower vibrations = lower heat

Examples: radio wave, microwave, infrared wave (below the red range)

Front 101

Visible light = Visible color spectrum = Visible spectrum = white light

Among all colors, four colors are important : White, black, red, and violet

Back 101

White color = reflect all colors = cooler temperature

Black color = absorb all colors = hotter temperature

Violet color = reflected only violet color and absorb ALL other color = highest energy of visible colors = shortest wavelength of visible colors

Red color = reflected only red color and absorbed All other colors= lowest energy of visible colors = longest wavelength of visible colors

Front 102

Describe the process of sunlight excite atoms and molecules

Back 102

An analogy of sunlight to atoms is that it like to make every at the party (atoms and molecules' electrons) excited .

Sunlight in the form of electromagnetic radiation or EM waves reach atoms and molecules. Atoms and molecules' electrons become excited . Once electrons excited, they become higher-energy state. Then, they released the light in the form of heat and become normal state (non-excited) again.

Front 103

True or false: Anything greater than -268 C( it is in celcius, not farenheit unit) will emit infrared waves

Back 103

True. Anything greater than -268 C( it is in celcius, not farenheit unit) will emit infrared waves

Night-vision goggles and infrared cameras can see infrared energy , allow us to see object's energy

Front 104

Any living thing will emit heat in the form of infrared waves above -268⁰C

Back 104

Absolutely zero (-273⁰C or 0⁰ Kelvin) is the theoretical temperature that molecules or atoms stop vibrating or stop moving .

As you see, -273⁰C is pretty close to -268C. Infrared waves = vibrating or moving

Front 105

Back 105

Thermal energy: solar power, greenhouse effect, absorption of energy

Front 106

Convection : involves density , warm air rises and cold air sinks

Warm air rises because it has less density than cold air

Density = mass ÷ volume

Back 106

Remember that convection happens because warm liquids and gases are less dense than cold liquids and gases

Front 107

Examples of convection : buoyancy, cloud formation, pressure systems, storms, plate tectonic, tectonic plates movement

Back 107

Example of radiations: sunlight, black color's absorption vs white color's reflection , greenhouse gas effect (carbon dioxidegas trapping), global warming,solar power, light energy absorption

Front 108

Back 108

Front 109

Conduction: must involve when one substance "touching" or contacting another

Back 109

Front 110

Conductor vs insulator

Back 110

Conduct: can conduct or transfer electricity or electrons . Example : metal group , copper, water

Insulator : cannot transfer electricity . Example: rubber, wood ,ceramic

Front 111

True or False : Heat always move from high temperature (warmer) to low temperature (colder)

Back 111

True. Heat always move from high temperature (warmer) to low temperature (colder)

Example: ice cube melt on your hand because the heat from your hand transfer to the ice cube and melt it

Front 112

Thermal conduction: Heat moves when two substances at different temperatures are physically touching

Back 112

When we talk about heat, we talk about vibrations of atoms and molecules

Front 113

True or false: higher density materials are better heat conductors

Back 113

True. Higher density materials are much better heat conductors.

Examples of high density materials: granite, metal

Examples of heat insulator materials : plastic, wood, rubber

Front 114

Convection (density) vs conduction (contact) vs radiation (em waves)

Back 114

Convection: warm air rises . Ex: smokes and heat rises above from the bonfire

Conduction: physically touching. Ex: pot directly sits on a stove, or pushing marshmallows inside the bonfire

Radiation: Heat transfer without touching. Ex: sunlight's heat from the sun warming the skin, one sits nearby bonfire can feel the radiated heat

Front 115

Answer: point A is A. Electrical Energy .

Back 115

Point B is Light Energy . A small portion of the energy will escape as heat as a form of Thermal Energy

Front 116

MELTSCN: mechanical, electrical, light, thermal, sound, chemical , nuclear

Energy transformation: change energy from one type to another

Back 116

Law of conservation of energy: energy can be transformed but it cannot be create or destroyed .

When we study energy , we think about 1) energy transformation, 2)how energy moves and 2) how the 3 phases of matter effects energy movement

Front 117

Energy transformation

Back 117

Front 118

Back 118

Front 119

Back 119

Front 120

Back 120

Front 121

Rotation vs Axis

Back 121

The Earth rotates on its axis

Rotate: spin around

Axis: immagrinary line around on which an object spins

Front 122

Direct vs indirect sunlight

Back 122

Direct sunlight = zero angle sunlight striking the Earth

Indirect sunlight = sunlight striking the earth at an angle

Front 123

Orbit vs revolution

Back 123

Front 124

1 revolution of the Earth around the sun =?? Days

Back 124

1 revolution of the Earth around the sun = 365 days

Front 125

What is an Orbit?

Back 125

Orbit is when an object revolves around another object

Ex:

moon orbiting the Earth

The Earth orbiting the sun

Front 126

True or false: season is caused by the Earth's tilting and also by its revolution around the sun

Back 126

TRUE

Season is caused by the Earth's tilting and also by its revolution around the sun

ROTATION does not cause seasonal change since rotation=short term . 1 rotation = 1 day

Seasonal = long term

Front 127

1 Rotation of the Earth vs 1 revolution of the Earth

Back 127

1 rotation of the Earth = 1 days

2 roration of the Earth = 2 days

1 revolution of the Earth = 365 days or 365 rotations!

Front 128

Back 128

Front 129

What is equinox?

Back 129

Equinox = equal light= equal length of days and night Equinox only occurs during Spring (starting Mar 21-22 DADDY'S BIRTHDAY) and Autumn (starting Sep 22-23

In the Northern Hemisphere, Spring occurs during March 21-22. In the Southern Hemisphere, Autumn occurs during March 21-22

In the Northern Hemisphere, Autumn occurs during September 22-23. In the Southern Hemisphere, Spring occurs during Sept 22-23

Front 130

What is solstice ?

Back 130

Solstice: unequal lights, either longest or shortest days

Summer solstice: longest day, shortest night . More DIRECT sunlight shinning because Earth tilted toward the sun (Jun 21-22)

Winter solstice: shortest day, longest night. Less sunlight (more INDIRECT sunlight) because the Earth tilted away from the sun (Dec 21-22)

Front 131

Indirect sunlight = what season?

Back 131

Indirect sunlight = WINTER = winter solstice= nights are longer than days, starting Dec 21-22 in Northern Hemisphere

In Northern Hemisphere, Dec 21-22 is winter so therefore the Southern Hemisphere it will be summer

Front 132

True or False: Indirect sunlight means the earth tilted toward the sun

Back 132

FALSE. Indirect sunlight means the earth tilted away from the sun

Front 133

Direct sunlight = what season?

Back 133

Direct sunlight = summer solstice =summer season = days are longer than nights= starting June 21-22 in the Northern Hemisphere

In Northern Hemisphere, June 21-22 is summer so therefore the Southern Hemisphere it will be in the winter

Front 134

True or False: direct sunlight means the earth tilted toward the sun

Back 134

True

Front 135

True or False : If the Northern Hemisphere is receiving indirect sunlight then the southern hemisphere is receiving direct sunlight

Back 135

True ! If the Northern Hemisphere is receiving indirect sunlight (winter) then the southern hemisphere is receiving direct sunlight (summer)

Front 136

True or False : If the Northern Hemisphere is titled toward the sun then the southern hemisphere tilted away from the sun!

Back 136

True ! If the Northern Hemisphere is titled toward the sun(summer or summer solstice) then the southern hemisphere tilted away from the sun (winter or winter solstice)!

Front 137

Back 137

Need to remember the shade and labels as well as the important months !

Front 138

Back 138

Front 139

True or False: The moon's gravity is responsible for high and low tides on earth

Back 139

TRUE!

Front 140

Moon's fact:

1. It is the only Earth's natural satellite

2. Stabilizing Earth's climate and wobble

3.has different phases (waxing crescent, waxing glibbons etc)

4. Its gravity creates high n low tides on the Earth

Back 140

Front 141

Back 141

Front 142

True or False: The sun is a huge ball of hot gas that constantly undergoes nuclear fusion and gives off radiation

Back 142

True !

Front 143

Amplitude refers to the heigh

Definition: distance from midline to the crest

Amplitude = Sound

Back 143

Frequency refers to the numbers of complete waves passed in 1 second

Frequency = Pitch

Front 144

Wind energy is an example of what kind of energy transformation ?

Back 144

Wind energy path: mechanical (wind) --> mechanical(spinning turbine)--> electrical (spinning magnets)

Front 145

Geothermal is an example of what kind of energy transformation ?

Back 145

Geothermal energy path: mechanical (steam) --> mechanical(spinning turbine)--> electrical (spinning magnets)

Front 146

Hydroelectric is an example of what kind of energy transformation ?

Back 146

Hydroelectric energy path: mechanical (water) --> mechanical(spinning turbine)--> electrical (spinning magnets)

Front 147

Biomass is an example of what kind of energy transformation ?

Back 147

Biomass energy path: chemical (composted) --> light (spinningfire due to coal,gas,fuel)--> mechanical (steam)---> mechanical (spinning turbine)---> electrical (spinning magnets)

Front 148

Dvd player energy transformation path

Back 148

Dvd: electrical --> mechanical --> sound and light wave

Front 149

A black shirt sitting in the sun energy transformation

Back 149

Light energy to thermal energy via absorption process

Front 150

A balling rolling downhill is an example of what kind of energy transformation ?

Back 150

Mechanical (potential)---> mechanical (kinetic)

Front 151

Raking leaves is example of what kind of energy transformation

Back 151

Mechanical energy to sound energy

Front 152

A lamp or light bulb is an example of what kind of energy transformation ?

Back 152

Electrical --> light energy AND thermal energy

Front 153

A wind-up music box is example of what kind energy transformation ?

Back 153

Mechanical energy to sound energy

Front 154

A radio is example of what kind of energy transformation

Back 154

Electrical(plug in) to mechanical (know tunning) to light energy (radio wave) to sound energy

Front 155

Plucking guitar string is an example of what kind of energy transformation

Back 155

Mechanical energy to mechanical energy to sound energy

Front 156

Difference between orbit and revolution

Back 156

Orbit does not mention the number and revolution does!

Both orbit and revolution mean a planet or moon that goes around another object due to Gravitational force

Front 157

Orbit: a planet or moon's path that travel on as it goes around another object in space

Notice it does not mention the number

Back 157

Revolution: it refers to planet or moon travelling around another object one time

Notice it mentions the number!

Front 158

Revolution vs Rotation

Back 158

Both mention number in description

Rotation also refers to spinning or moving around an axis or imaginary line

Revolution does not mention imaginary line

Front 159

True or False: season is affected by Earth's tilted axis and Earth's revolution

Back 159

True! Season is affected by Earth's tilted axis and Earth's revolution

Season is not affected by rotation!

Front 160

Remember the diagram of seasons, soldiers and equinoxes

Back 160

Front 161

Acronym for all planets from closet to the sun to furtherest from the sun: My Very Eager Mother Just Served Us Noodles: Mercury, Venus, Earth, Mars,Jupiter, Saturn, Uranus, Neptune

Back 161

Rocky Planets: My Very Eager Mother

(MERCURY, VENUS, EARTH, MARS)

GAS GIANTS: Just Served Us Noodles (Jupiter, Saturn, Uranus, Neptune )