Science: Weather Factors And Heat (8Th Grade)

Front 1

Celsius: What is the freezing point of water

Back 1

0 degrees C

Front 2

Celsius: What is the boiling point of water?

Back 2

100 degrees C

Front 3

Fahrenheit: What is the freezing point of water?

Back 3

32 degrees F

Front 4

Fahrenheit: What is the boiling point of water?

Back 4

212 degrees F

Front 5

Is 50 degrees hotter on a Celsius or on a Fahrenheit scale? Why?

Back 5

50 degrees Celsius is notter than 50 degrees F. 50 degrees Celsius is half way between freezing and boiling.

Front 6

The energy transferreed from a hotter object to a cooler one is referred to as ____________________.

Back 6

Conduction

Front 7

Radiation is the direct trnafwer of energy by electromagnetic waves. True or false?

Back 7

True

Front 8

The transfer of heat by the movement of a fluid is called _________________.

Back 8

Convection.

Front 9

What is temperature?

Back 9

Temperature is the average amount of enery of motion of each particle of a substance.

Front 10

What is thermal energy?

Back 10

The total energy of mition in the particles of a substance is called thermal energy.

Front 11

Name three ways that heat istransferred?

Back 11

Heat is transferred in trhee ways: radiation, conduction, and convection.

Front 12

What is radiation?

Back 12

The direct transfer of energy by electromagnetic waves.

Front 13

What is conduction?

Back 13

The direct transfer of thermal energy from one substnce to another that it is touching.

Front 14

What is convection?

Back 14

The transfer of thermal energy bythe movement of a fluid.

Front 15

How is the air near Earth's surface heated?

Back 15

By all three types ofheat transfer--radiation, convection, and conduction.

Front 16

What is convection currents?

Back 16

The circulation of a fluid as it alternately heats up and cools down.

Front 17

What is temperature?

Back 17

Temperature is the average amount of energy of motion of each particle of a substance.

Front 18

What instrument is used to measure air temperature?

Back 18

Thermometer

Front 19

How do the three types of heat transfer work together to heat the troposphere?

Back 19

--The sun transfers heat to Earth by radiation.
--As Earth warms, it re-radiates heat to the atmosphere and doncducts heat to gas molecules near the surface.
--This heat is tranferred throughout the troposphere by convection.

Front 20

What is the major way that heat is transferred in the troposphere?

Back 20

Convection.

Front 21

Which temperature scale do scientists use?

Back 21

The Celsius scale

Front 22

What is thermal energy?

Back 22

The total energy of motion in the particles of a substance is called thermal energy.
--Example: hot tea in a pot has more thermal energy than the hot tea in a cup.

Front 23

How is air measured?

Back 23

With th thermometer.

Front 24

Why do scientists use the Celsius scale?

Back 24

More convenient to work with a system that has multiples of 10...
Fits better with the metric system;
--Scientists all over the world have agreed to use the Celsius scale.

Front 25

What are the two scales most commonly used to measure temperature?

Back 25

Celsius and Fahrenheit scales

Front 26

How is temperature measured?

Back 26

In units called degrees

Front 27

What is the freezing and boiling point of the Celsius scale?

Back 27

0 degrees Celsius=freezing;
100 degrees Celsius=boiling

Front 28

What is the freezing and boiling point of the Fahrenheit scale?

Back 28

32 degrees Fahrenheit=freezing;
--212 degrees Fahrenheit = boiling

Front 29

What scalees is used for reports in the United States?

Back 29

Fahrenheit

Front 30

How do you convert degrees in Celsisus to degrees in Fahrenheit?

Back 30

C= 5/9 ( F-32)

Front 31

Is 50 degrees hotter on a Celsius or on a Fahrenheit scale?

Back 31

50 degrees Celsius is hotter.

Front 32

The energy transferred from a hotter object to a cooler one is referred to as _____________________.

Back 32

Conduction

Front 33

Radiation is the direct transfer of energy by electromagnetic waves. True or false?

Back 33

True

Front 34

The direct transfer of heat from one substance to another substance that it is touching is called _______________________.

Back 34

conduction

Front 35

Match the correct answer:
a. radiation
b. conduction
c. convection

Back 35

1. warm water rising in a pot on a stove.
2. Burning your bare feet on hot sand.
3. Feeling the sun's warmth on your face.

Front 36

The faster the particles of a substance are moving, the more energy they have?
True or false

Back 36

True

Front 37

The total energy of motion in the particles of a substance is called ______________ _____________.

Back 37

Thermal energy

Front 38

The average amount of energy of motion of each particle of a substance is called ________________.

Back 38

Temperature

Front 39

Temperature is a measure of how hot or cold a substance is. True or false

Back 39

True

Front 40

air temperture is usually measured with a(n) ____________________.

Back 40

Thermometer.

Front 41

How does a thermometer work?

Back 41

A thermometer is a glass tube with a bulb on one end and contains a liquid. The liquid in a thermometer expands when it is heated and contracts when cooled.

Front 42

What is heat?

Back 42

The transfer of thermal energy from one object to another because of a difference in temperature.

Front 43

Conduction works well in some solids, such as metals, but not as well in liquids and gases. True or False

Back 43

True

Front 44

The upward ovement of warm air and the downward movement of cool air from convection currents. True or false

Back 44

true

Front 45

The air close to the ground is usually warmer than the air a few meters up.

Back 45

True

Front 46

Convert temperatures from Fahrenheit to Celsius.
C=5/9 (F-32)
35 F
60 F
72 F

Back 46

1.67 C
15.6 C
22.2 C

Front 47

In fluids (liquids and gases), particles can move easily from one place to another. As the particles move, their energy gooes along with them. This is convection. True or False.

Back 47

True

Front 48

When you walk barefoot in sand, your feet feel hot because of _______________________.

Back 48

conduction. The heat is moved from the hot sand to your cooler feet.

Front 49

Do air and water are great conductors of heat? True or false.

Back 49

False

Front 50

When a fast-moving sand molecule bumps into a slower-moving molecule, the faster molecue transfers some of its energy. True or false

Back 50

True