Quiz about Midpoint D1 Review

Question 1

At which point is potential energy greatest?

Accepted Answer

W

Answer

X

Answer

Y

Answer

Z

Question 2

__________ is stored energy.

Accepted Answer

Potential

Answer

Kinetic

Answer

None of the above

Answer

All of the above

Question 3

The faster an object moves, the ________ kinetic energy it has.

Accepted Answer

more

Answer

less

Answer

none of the above

Answer

same

Question 4

What kind of energy is in a moving skateboard?

Accepted Answer

Kinetic

Answer

Potential

Answer

Both potential and kinetic energy

Answer

none of the above

Question 5

What kind of energy is in a rock at the edge of a cliff?

Accepted Answer

Potential

Answer

Kinetic

Answer

Both potential and kinetic energy

Answer

none of the above

Question 6

Which is the best example that something has kinetic energy?

Accepted Answer

b. a tennis ball rolling across the court

Answer

a. a car parked on a steep hill

Answer

c. a picture hanging on the wall

Answer

d. a piece of coal before it's burned

Question 7

Energy due to motion is ____________ energy.

Accepted Answer

Kinetic

Answer

Potential

Answer

Energy

Answer

Friction

Question 8

Gravitational potential energy depends on the ________ and ________ of the object.

Accepted Answer

Height and mass

Answer

Friction and movement

Answer

Mass and Movement

Answer

Height and Friction

Question 9

When a pendulum swings, at which point is kinetic energy highest?

Accepted Answer

3

Answer

1

Answer

2

Answer

4

Question 10

When a pendulum swings, at which point is potential energy at its greatest?

Accepted Answer

1

Answer

2

Answer

3

Answer

4

Question 11

Energy can be _____________ or changed from one type to another.

Accepted Answer

transferred

Answer

destroyed

Answer

created

Answer

ignored

Question 12

Gravitational potential energy depends on the ________ and ________ of the object.

Accepted Answer

Height and mass

Answer

Friction and movement

Answer

Mass and Movement

Answer

Height and Friction

Question 13

Conservation of energy states that energy cannot be ________ or ________, but can be altered from one form to another.

Accepted Answer

created, destroyed

Answer

gravity, force

Answer

heat, created

Question 14

What are the two factors that affect kinetic energy?

Accepted Answer

mass and speed

Answer

time and energy

Answer

power and mass

Answer

time and work

Question 15

What is the unit of measurement for kinetic energy

Accepted Answer

Joule

Answer

Newton

Answer

Watt

Answer

Kilogram

Question 16

Which of the following is an exmaple of a change of kinetic energy into gravitational potential energy?

Accepted Answer

a person walking up a hill

Answer

a person parachuting out of a plane

Answer

a car racing around an oval track

Answer

a person skiing down a hill

Question 17

Choose the BEST answer that is an example of an energy transformation from potential energy to kinetic energy.

Accepted Answer

a swing swaying back and forth

Answer

a ball rolling down a ramp

Answer

a picture hanging on the wall

Answer

a coat hanging on a hook

Question 18

Which point has the most potential energy?

Accepted Answer

a

Answer

G

Answer

f

Answer

b

Question 19

Which 2 letters have the most kinetic energy

Accepted Answer

X & Z

Answer

W & Y

Question 20

How much potential energy is at the top of a hill on a rollar coaster ride

Accepted Answer

100%

Answer

50%

Answer

0%

Answer

20%

Question 21

A 0.40 kilogram bird is flying at a constant speed of 8.0 m/s. What is the bird's kinetic energy ?

Accepted Answer

12.8 J

Answer

3.2 J

Answer

4.2 J

Answer

2.0 J

Question 22

A 2600 kilogram car is moving at a speed of 25 m/s. How much kinetic energy does the car have?

Accepted Answer

437,500 J

Answer

427,500 J

Answer

237,500 J

Answer

537,500 J

Question 23

A 60.0 kg person walks from the ground to the roof of a 74.8 m tall building. How much gravitational potential energy does she have at the top of the building?

Accepted Answer

43982.4 J

Answer

63982.3 J

Answer

43962.4 J

Answer

83942.4 J

Question 24

A pitcher throws a 0.145 kg baseball at a velocity of 30.0m/s. How much kinetic energy does the ball have?

Accepted Answer

65.25 J

Answer

65.35 J

Answer

87.25 J

Answer

23.45 J

Question 25

When a another scientist does someone's experiment to see if the results are valid?

Accepted Answer

replication

Answer

repetition

Answer

experimental method

Answer

controlled variable

Question 26

Ryan is testing golf balls. He drops three different brands of balls from 40 cm and measures how high they bounce. He drops each ball 10 times.

Accepted Answer

repetition

Answer

replication

Question 27

Which statement is necessary in order for a scientific investigation to be valid?

Accepted Answer

The investigation must be able to be repeated by others.

Answer

The investigation must produce data that can be graphed.

Answer

The investigation must follow all the steps of the scientific method.

Answer

The investigation must have a conclusion that matches the prediction.

Question 28

What happens if the results of a scientist's experiment are NOT similar to the results gathered by other scientists doing the same experiment at a later date?

Accepted Answer

The results of the experiment are questioned by the other scientists.

Answer

The results of the experiment are changed by the scientists.

Answer

The results of the experiment are published in scientific journals.

Answer

The results of the experiment are accepted by the scientific community.

Question 29

What energy transformation occurs as bioluminescent algae glow in the ocean?

Accepted Answer

Chemical --> Radiant

Answer

Radiant --> Chemical

Answer

Thermal --> Radiant

Answer

Thermal --> Chemical

Question 30

What energy transformation occurs in the chameleon as it quickly launches its tongue to catch an insect?

Accepted Answer

Chemical --> Mechanical

Answer

Radiant --> Chemical

Answer

Thermal --> Chemical

Answer

Mechanical --> Chemical

Question 31

What energy transformation occurs as howler monkeys loudly call to each other in the forest?

Accepted Answer

Chemical --> Mechanical --> Sound

Answer

Chemical --> Sound --> Thermal

Answer

Sound --> Chemical --> Radiant

Answer

Mechanical --> Chemical --> Sound

Question 32

What do sound energy, radiant energy, and thermal energy all have in common?

Accepted Answer

They're all forms of kinetic energy

Answer

They're all made of similar atoms and molecules

Answer

They're all made by plants during photosynthesis

Answer

All of these choices

Question 33

What is the best example of a machine that converts electrical energy into kinetic energy and sound energy?

Accepted Answer

an electric toothbrush

Answer

a toaster

Answer

a flashlight

Answer

an iron

Question 34

What best describes the energy conversion that occurs when you turn on a hair dryer?

Accepted Answer

electric to kinetic to thermal and sound

Answer

chemical to thermal to light and sound

Answer

nuclear to electrical to thermal and sound

Answer

kinetic to light to thermal and sound

Question 35

What best describes the energy conversion that takes place in a microwave oven?

Accepted Answer

electrical to light to thermal

Answer

chemical to thermal to light

Answer

electrical to thermal to sound

Answer

nuclear to thermal to chemical

Question 36

Turning on a lamp is an example of energy transformation from electrical to 3 forms of energy. Which of these is NOT created by the lamp?

Accepted Answer

chemical

Answer

radiant

Answer

light

Answer

heat

Question 37

Which of the following energy transfers occurs when food is digested?

Accepted Answer

chemical to mechanical

Answer

radiant to nuclear

Answer

mechanical to potential

Answer

thermal to chemical

Question 38

In energy transformations, "wasted energy" usually takes what form?

Accepted Answer

heat

Answer

chemical energy

Answer

light

Answer

sound waves

Question 39

During most energy transformations and transfers, wasted energy takes the form of __.

Accepted Answer

heat

Answer

electromagnetic radiation

Answer

sound waves

Answer

random mechanical movements

Question 40

What two forms of energy are given off by a burning candle?

Accepted Answer

heat and light

Answer

mechanical and electrical

Answer

nuclear and light

Answer

potential and heat

Question 41

Which of the following converts chemical energy to electrical energy?

Accepted Answer

Battery

Answer

Person eating food

Answer

Automobile

Answer

Camp Fire

Question 42

Heat is the _______ of energy.

Accepted Answer

Transfer

Answer

Measure

Question 43

Which choice below deals with how fast the particles of an object move?

Accepted Answer

Temperature

Answer

Heat

Question 44

As the temperature of a substance rises, the average kinetic energy of the particles making up the substance

Accepted Answer

<p>increases</p>

Answer

<p>decreases</p>

Answer

remains the same

Question 45

Heat transfer occurs:

Accepted Answer

only from warm objects to colder ones

Answer

in many directions

Answer

both from warm objects to colder ones and from cold objects to warmer ones

Answer

only from cold objects to warmer ones

Question 46

When you touch something that feels cold,

Accepted Answer

heat from your hand moves into the cold substance.

Answer

coldness moves from the cold substance into your hand.

Answer

it melts.

Answer

it freezes.

Question 47

Energy that moves particles of matter is

Accepted Answer

thermal energy

Answer

temperature

Answer

heat

Answer

friction

Question 48

Why does a diver wear a wet suit?

Accepted Answer

To keep in thermal energy.

Answer

To keep from getting cuts.

Answer

To keep from sinking.

Answer

To keep out cold.

Question 49

The temperature of a substance increases as___.

Accepted Answer

the average kinetic energy of its particles increases

Answer

the substance expands

Answer

the substance's volume increases

Answer

the substance's mass increases

Question 50

You're holding hands with your best friend.  Your friend's hands are REALLY warm and yours are really cold.  After a few minutes, this has changed.  How might you explain what happened?

Accepted Answer

The heat energy from your friend's hand transferred to your hand through conduction.

Answer

The cold energy from your hand transferred to your friend's hand through conduction.

Answer

The cold energy from your hand transferred to your friend's hand through convection.

Answer

The heat energy from your friend's hand transferred to your hand through convection.

Question 51

If two objects have different temperatures, heat will flow from the warmer object to the cooler one UNTIL ____________

Accepted Answer

they both have an equal temperature

Answer

one reaches a temperature of zero

Answer

one runs out of energy

Question 52

Observe the diagram. Which statement is true about the kinetic energy of the molecules in the containers?

Accepted Answer

The molecules are moving faster in Diagram A

Answer

The molecules are moving slower in Diagram A

Answer

The molecules are moving at the same rate in both diagrams

Question 53

The Law of Conservation of Energy states:

Accepted Answer

Energy cannot be created or destroyed, it can only transformed

Answer

Energy can created or destroyed but not transformed

Answer

Energy can't be created, destroyed or transformed

Question 54

The heat from a lamp allows a lizard to remain warm. This is an example of which type of heat transfer?

Accepted Answer

radiation

Answer

conduction

Answer

convection

Answer

insulation

Question 55

What is the definition of CONDUCTION?

Accepted Answer

When heat transfers from objects that are touching.

Answer

When heat is transferred from objects like rays of light or electromagnetically.

Answer

a  hot liquid or air that  expands, becomes less dense, and rises or becomes more dense, and sinks.

Answer

When heat transfers through the heater or AC in your house.

Question 56

What is the definition of CONVECTION

Accepted Answer

warm fluid rises; cool fluid sinks

Answer

When heat transfers through waves.

Answer

When heat transfers from objects that are touching.

Answer

Heat traveling from the sun

Question 57

Warm air is __________ dense than cold air and rises creating convection currents.

Accepted Answer

less

Answer

more

Question 58

What is the BEST example of a conductor?

Accepted Answer

A metal bowl

Answer

A wooden block

Answer

A ceramic mug

Answer

A glass cup

Question 59

An insulator . . .

Accepted Answer

Traps heat inside an object

Answer

Allows a lot of heat to escape

Answer

Makes the temperature of an object rise

Answer

Moves heat from one place to another

Question 60

True or False: A thermal conductor transfers heat well between two objects, and the heat does not stay in one place.

Accepted Answer

True

Answer

False

Question 61

Why does warm air rise and cool air sink?

Accepted Answer

Warm air is less dense than cooler air.

Answer

Warm air is more dense than cooler air.

Answer

Warm air weighs less than cooler air.

Answer

Warm air weighs more than cooler air.

Question 62

When would an object left in a room temperature room stop transferring heat?

Accepted Answer

When it has reached the same temperature as the room temperature air

Answer

When it has lost all of its thermal energy

Answer

When it has gained all of the air's thermal energy

Answer

When it has gained or lost all of it's coldness to the air

Question 63

What is the symbol for Thermal Energy?

Accepted Answer

Q

Answer

t

Answer

m

Answer

C

Question 64

What is the symbol for Specific Heat

Accepted Answer

C

Answer

Q

Answer

t

Answer

m

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