Final Exam Phy Sc.

Front 1

A wiggle time is a

Back 1

transport of energy" vibration"

Front 2

When we consider how frequently a pendulum swings to and from were talking about its

Back 2

frequency

Front 3

When we consider the time taken from a pendulum to swing to and from were talking about the pendulums

Back 3

period

Front 4

When we consider the distance a pendulum swings to and to were talking about the pendulums

Back 4

amplitude

Front 5

How many vibrations per second are associated with a 101MZ radio wave

Back 5

101,000,000,000

Front 6

If the frequency of a certain wave is 10HZ, its period is

Back 6

1/10HZ or 0.1 seconds

Front 7

What moves from place to place in wave motion is

Back 7

Energy

Front 8

The vibrations of a longitudinal wave move in a direction __________ wave.

Back 8

perpendicular

Front 9

A sound wave is a transverse or longitudinal wave?

Back 9

longitudinal

Front 10

Sound travels faster in air, water, steel, or vacuum?

Back 10

Vacuum

Front 11

Sound travels faster when the air is warm or cold?

Back 11

warm

Front 12

Another word for reflection of sound is

Back 12

echo

Front 13

The explanation for all types of refraction involves a change in

Back 13

speed

Front 14

When sound travels faster at ground level than higher in the air, sound tends to bend upward or downward?

Back 14

upward

Front 15

Why will a struck tuning fork sound louder when it is held against a table?

Back 15

forced vibration

Front 16

The natural frequency of an object depends on its ________ and ________.

Back 16

shape and elasticity

Front 17

Troops break step when marching across a bridge to prevent

Back 17

resonance

Front 18

The phenomenon of beats results from sound

Back 18

interference

Front 19

Sound waves cannot travel in

Back 19

a vacuum

Front 20

A doppler effect occurs when a source of sound moves ________ you

Back 20

toward

Front 21

A wave barrier is produced in water when the speed of an object ________ speed of waves in water.

Back 21

matches

Front 22

A bow wave is produced in water when the speed of an object ________ speed of waves in water.

Back 22

exceeds

Front 23

A shock wave is produced in water when the speed of an object ________ speed of sound in air.

Back 23

exceeds

Front 24

Rainbow exist because light is

Back 24

refracted and reflected

Front 25

Rainbows are not usually seen as complete circles because

Back 25

the ground is usually in the way

Front 26

A wave is a vibration in

Back 26

space and time

Front 27

A wave having a frequency of 1000 Hz vibrates at

Back 27

1000 cycles per second

Front 28

The source of all wave motion is a

Back 28

vibrating object

Front 29

Which of following is not a transverse wave?

Back 29

sound

Front 30

The vibrations of a transverse wave in a direction

Back 30

at right angles to the direction of wave travel

Front 31

The source of all sounds is something that is

Back 31

vibrating

Front 32

The sound source of high frequency emits a high

Back 32

pitch

Front 33

Sound travels faster in

Back 33

steel

Front 34

Resonance occurs when a 200-Hz tuning fork encounters a sound wave with a frequency of

Back 34

200 Hz

Front 35

A bass fiddle is louder than a harp because of its

Back 35

sounding board

Front 36

When you tune a radio to a certain station, you match the frequency of the internal electrical circuit to the frequency of that radio station, which illustrates

Back 36

resonance

Front 37

A doppler effect occurs when a source of sound moves

Back 37

away from you and toward you

Front 38

A wave barrier is produced in water when the speed of an object

Back 38

matches the speed of waves in the water

Front 39

The loudness of a musical sound is a measure of the sound wave's

Back 39

amplitude

Front 40

High pitched sound has a high

Back 40

frequency

Front 41

The source of electromagnetic waves is vibrating

Back 41

electric charges

Front 42

Object and image for a plane mirror lie

Back 42

equal distances from the mirror

Front 43

Light travels faster in

Back 43

a vacuum

Front 44

Atmospheric refraction makes the daylight hours

Back 44

longer

Front 45

A mirage is a result of atmospheric

Back 45

refraction

Front 46

Refraction causes the bottom of a swimming pool to appear

Back 46

more shallow

Front 47

Colors seen on TV result from color

Back 47

addition

Front 48

Colors seen on the cover of our physical science book result from color

Back 48

subtraction

Front 49

The sky is blue because air molecules in the sky act as tiny

Back 49

resonators that scatter blue light

Front 50

A whitish sky is evidence that the atmosphere contains

Back 50

a mixture of particle sizes

Front 51

Red sunsets are due to light of lower frequencies that

Back 51

survive being scattered in the air

Front 52

Rainbows are not usually seen complete circles because

Back 52

the ground is usually in the way

Front 53

Rainbows exist because light is

Back 53

reflected

Front 54

The reason that a surface appears darker when wet is because

Back 54

absorption of light re-flecting inside

Front 55

Distance/Time

Back 55

speed

Front 56

Time x Speed

Back 56

distance

Front 57

Speed/Distance

Back 57

time

Front 58

Density

Back 58

mass/volume

Front 59

Volume

Back 59

length x width x height

Front 60

Mass

Back 60

density x volume

Front 61

Length

Back 61

straight line distance between two points

Front 62

Scalar

Back 62

a quantity that has magnitude only

Front 63

Vector

Back 63

a quantity that has BOTH magnitude and direction

Front 64

Distance

Back 64

the total length of a path an object travels

Front 65

Velocity

Back 65

speed in a given direction

Front 66

Acceleration

Back 66

the rate at which velocity changes

Front 67

Free Fall

Back 67

the ideal falling motion of an object in which the gravitational force is the only force acting on the object

Front 68

A satellite is a projectile that falls in which direction with the Earth?

Back 68

around

Front 69

An object falls to earth how many meters during the first second?

Back 69

5 meters

Front 70

Inertia

Back 70

the tendency of an object to resist any change in its motion

Front 71

Kinetic Energy

Back 71

energy that an object has due to its motion

Front 72

Motion

Back 72

the state in which one objects distance from another is changing

Front 73

Newtons First Law of Motion

Back 73

"an object at rest will remain at rest, and an object moving at a constant velocity will continue moving at a constant velocity, unless it is acted upon by an unbalanced force."

Front 74

Newtons Second Law of Motion

Back 74

"acceleration depends on the objects mass and on the netforce acting on the object"

Front 75

Newtons Third Law of Motion

Back 75

"if one object exerts a force on another object, then the second object experts a force of equal strength in the opposite direction on the first object"

Front 76

Balanced Force

Back 76

equal forces acting on sn object in opposite directions

Front 77

Friction

Back 77

the force that one surface exerts on another when the two surfaces rub against each other

Front 78

Potential Energy

Back 78

stored energy that results from the position or shape of an object.

Front 79

Net Force

Back 79

The overall force on an object when all the individual forces acting on it are added together.

Front 80

Arrange ______, ________, ________ to the sequence of light travel from the slowest to fastest.

Back 80

dense air, thin air, vacuum

Front 81

Momentum

Back 81

the product of an objects mass and velocity

Front 82

Which has the greater density, a fake full of water or a cupful or lake water?

Back 82

Both have the same density

Front 83

Water pressure at the bottom of the lake depends on the

Back 83

depth of the lake

Front 84

Consider two tubes filled with water at the same height, one with fresh water and the other tube with salt water. The pressure is greater at the bottom of the with.

Back 84

salt water

Front 85

Pumice is a volcanic rock that floats. Compared with the density of water, its density is

Back 85

less

Front 86

A completely submerged object always displaces its own

Back 86

volume of fluid

Front 87

What is the weight of water displaced by a 100-ton floating ship?

Back 87

100 tons

Front 88

When an object is partly or wholly immersed in a liquid, it is buoyed up

Back 88

by a force equal to a weight of liquid displaced

Front 89

The buoyant force on an object is less when the object is

Back 89

submerged near the bottom

Front 90

two life preserves have identical volumes, one filled with styrofoam and the other filled with sand. When both life preservers are fully submerged, the buoyant force is greater on the one filled with

Back 90

sand

Front 91

compared with an empty ship, the same ship loaded with styrofoam will float

Back 91

lower in the water

Front 92

buoyant force is greater on a submerged 1 cubic centimeter block of

Back 92

aluminum

Front 93

When a boat sails from fresh water to salt water, the boat will float

Back 93

higher in the water

Front 94

A boat loaded with scrap iron floats in a swimming pool. When the iron is thrown overboard, the pool level will

Back 94

fall

Front 95

Atmospheric pressure is caused by the

Back 95

weight of the atmosphere

Front 96

When a suction cup sticks to a wall it is

Back 96

pushed to the wall by the atmosphere

Front 97

A rising balloon is buoyed up with a force equal to the

Back 97

weight of air; atom pressure; weight balloon; density air

Front 98

If air speed is greater along the top surface of a birds wings, pressure of the moving air there is

Back 98

less

Front 99

Airplane lift is achieved when air pressure on the bottom of a wing is

Back 99

greater than pressure on top

Front 100

An umbrella tends to jerk upward on a windy day principally because

Back 100

air pressure is reduced over the curved top surface

Front 101

The temperature of melting ice is

Back 101

32 F and 0 C

Front 102

When you touch a hot penny in sunlight with your finger, energy flows

Back 102

from the penny to your finger

Front 103

Suspend a pair of Ping-Pong balls from two strings so there is a small space between them. If you blow air between the balls, they will swing

Back 103

toward each other

Front 104

Substances are composed of tiny particles. Temperature is related mostly to the particles

Back 104

None of the above

Front 105

Absolute zero corresponds to a temperature of

Back 105

0 K and -273 C

Front 106

The lowest temperature possible in nature is

Back 106

-273 C

Front 107

At absolute zero, a substance has

Back 107

no more energy to give up

Front 108

Heat is simply another word for

Back 108

thermal energy that flows from hot to cold

Front 109

If the same quantity of heat is added to both a 1- liter and a 2- liter container of water, the temperature change of water in the 1- liter container will be

Back 109

twice

Front 110

Compared to a giant iceberg, a hot cup of coffee has

Back 110

higher temperature, but less thermal energy

Front 111

Which law of thermodynamics addresses the direction of heat flow?

Back 111

second law

Front 112

When work is done on a system and no heat is added, the temperature of the system

Back 112

decreases

Front 113

The direction of natural processes is from states of

Back 113

higher order to lower order

Front 114

Your room gets messier day by day. In this case entropy is

Back 114

increasing

Front 115

The filling of a hot apple pre is hotter than the crust due to

Back 115

water in the filling that better retains thermal energy

Front 116

A substance that heats up relatively quickly has a

Back 116

low specific heat capacity

Front 117

The moderate temperatures of island throughout the world has manly to do with water's

Back 117

high specific heat capacity

Front 118

The usefulness of a bimetallic strip is due to differences in

Back 118

expansions of metal

Front 119

When a bimetallic bar composed of copper and iron strips is heated, the bar bends towards the iron strip because

Back 119

copper expands more than iron

Front 120

During a very cold winter, water pipes sometimes burst because

Back 120

water expands when freezing

Front 121

If you were caught in freezing weather with only a candle for warmth, you would be warmer in

Back 121

an igloo

Front 122

Your toes feel warmer on a rug than on tile a floor because the rug

Back 122

is a better insulator than tile

Front 123

One of the main reasons people can walk barefoot on red-hot coals of wood without burning their feet has to do with

Back 123

low thermal conductivity of the coals

Front 124

Hot steam that issues from a pressure cooker expands and

Back 124

cools

Front 125

Convection currents in the air near a seashore are produced by

Back 125

unequal heating of land and water

Front 126

If a volume of air is warmed, it expands. If a volume of air expands, it

Back 126

cools

Front 127

If an object radiates more energy than it reflects, its

Back 127

temperature decreases and thermal energy decreases

Front 128

Objects that are good radiators generally

Back 128

absorbs radiation relatively well

Front 129

To minimize heat loss it is best that a teapot be

Back 129

silver

Front 130

If a poor absorber of radiation were a good emitted, its temperature would be

Back 130

less than its surroundings