Question 1

Which form of energy does not require matter for traveling through space?

Accepted Answer

A) electrical 
B) chemical 
C) radiant 
D) mechanical 
A) electrical 
B) chemical 
C) radiant 
D) mechanical C

Question 2

You do more work on yourself when you run up the stairs than when you walk slowly.

Accepted Answer

A) True 
 B)False  False

Question 3

You can find the kinetic energy of a book of a certain mass just before it hits the floor after falling a certain distance by using which equation?

Accepted Answer

A) W = Fd 
B) K.E.= ½ mv2 
C) P.E.= mgh 
D) None of the above. 
A) W = Fd 
B) K.E.= ½ mv2 
C) P.E.= mgh 
D) None of the above. C

Question 4

Your electric bill for 1500 kilowatt-hours is a charge for the power you have used that month.

Accepted Answer

A) True 
 B)False

Question 5

As we deplete our coal reserves, we can replace this lost source of energy by increasing our output of hydroelectric power.

Accepted Answer

A) True 
 B)False

Question 6

Which one of the following has an appropriate unit?

Accepted Answer

A) work - joule 
B) force - newton 
C) power - watt 
D) All of the above. 
A) work - joule 
B) force - newton 
C) power - watt 
D) All of the above.

Question 7

The watt (W) is a unit of

Accepted Answer

A) work. 
B) electrical energy. 
C) power. 
D) force. 
A) work. 
B) electrical energy. 
C) power. 
D) force.

Question 8

When a light bulb is rated at 60 W, it means that

Accepted Answer

A) the bulb uses 60 J of power when it is lit. 
B) current is traveling at 60 m/s through the filament. 
C) each second, the bulb converts 60 J of electrical energy to heat and light. 
D) the bulb loses 60 W of potential energy each second. 
A) the bulb uses 60 J of power when it is lit. 
B) current is traveling at 60 m/s through the filament. 
C) each second, the bulb converts 60 J of electrical energy to heat and light. 
D) the bulb loses 60 W of potential energy each second.

Question 9

Kinetic energy refers to

Accepted Answer

A) energy of motion. 
B) energy of position. 
C) energy stored in fossil fuels. 
D) electrical energy. 
A) energy of motion. 
B) energy of position. 
C) energy stored in fossil fuels. 
D) electrical energy.

Question 10

Which one of the following does not have the same units as the others?

Accepted Answer

A) kinetic energy 
B) momentum 
C) potential energy 
D) work 
A) kinetic energy 
B) momentum 
C) potential energy 
D) work

Question 11

Nearly all of the energy consumed today is provided by petroleum, coal, hydropower and nuclear sources.

Accepted Answer

A) True 
 B)False

Question 12

A car traveling 20 mph can stop in about 40 ft.If the same car were traveling twice as fast, its stopping distance would be roughly

Accepted Answer

A) 40 ft. 
B) 60 ft. 
C) 80 ft. 
D) 160 ft. 
A) 40 ft. 
B) 60 ft. 
C) 80 ft. 
D) 160 ft.

Question 13

The solar technology that is today contributing about as much energy as moving water is

Accepted Answer

A) solar cells. 
B) OTEC. 
C) power tower. 
D) biomass. 
A) solar cells. 
B) OTEC. 
C) power tower. 
D) biomass.

Question 14

Of the following, which rank of coal has the most desirable burning properties and highest energy content?

Accepted Answer

A) peat 
B) lignite 
C) subbituminous 
D) bituminous 
A) peat 
B) lignite 
C) subbituminous 
D) bituminous

Question 15

Two students stand poised to leap off a high dive structure into the swimming pool below.Student B is twice as massive as student A.Which of the following is true?

Accepted Answer

A) Student B will reach the ground sooner than student A. 
B) Both students have the same gravitational potential energy. 
C) Both students will have the same kinetic energy just before impact. 
D) Student B did twice as much work climbing to the top of the structure. 
A) Student B will reach the ground sooner than student A. 
B) Both students have the same gravitational potential energy. 
C) Both students will have the same kinetic energy just before impact. 
D) Student B did twice as much work climbing to the top of the structure.

Question 16

While exploring an ancient Mayan tomb, you discover that the walls are closing in on you.By exerting 400 N of force, you are able to keep the wall from coming closer.The work you are doing on the wall is

Accepted Answer

A) 400 J. 
B) 3920 J. 
C) unknown, because the mass of the wall is not given. 
D) zero, because the wall is not moving. 
A) 400 J. 
B) 3920 J. 
C) unknown, because the mass of the wall is not given. 
D) zero, because the wall is not moving.

Question 17

The amount of energy produced by power-generating dams is

Accepted Answer

A) increasing, as more of this clean, non-polluting resource is used. 
B) increasing, as more renewable resources are used. 
C) decreasing, as more energy is used but new dams are not being built. 
D) decreasing, as old dams are destroyed for environmental reasons. 
A) increasing, as more of this clean, non-polluting resource is used. 
B) increasing, as more renewable resources are used. 
C) decreasing, as more energy is used but new dams are not being built. 
D) decreasing, as old dams are destroyed for environmental reasons.

Question 18

Which solar technology makes economic sense for a homeowner?

Accepted Answer

A) solar cells 
B) water heating 
C) power tower 
D) biomass 
A) solar cells 
B) water heating 
C) power tower 
D) biomass

Question 19

The energy an object has because of its position is called potential energy.

Accepted Answer

A) True 
 B)False

Question 20

Plants convert radiant energy from the Sun into chemical energy by a process called photosynthesis.

Accepted Answer

A) True 
 B)False

Exam 3: Energy

Which form of energy does not require matter for traveling through space?

You do more work on yourself when you run up the stairs than when you walk slowly.

You can find the kinetic energy of a book of a certain mass just before it hits the floor after falling a certain distance by using which equation?

Your electric bill for 1500 kilowatt-hours is a charge for the power you have used that month.

As we deplete our coal reserves, we can replace this lost source of energy by increasing our output of hydroelectric power.

Which one of the following has an appropriate unit?

The watt (W) is a unit of

When a light bulb is rated at 60 W, it means that

Kinetic energy refers to

Which one of the following does not have the same units as the others?

Nearly all of the energy consumed today is provided by petroleum, coal, hydropower and nuclear sources.

A car traveling 20 mph can stop in about 40 ft.If the same car were traveling twice as fast, its stopping distance would be roughly

The solar technology that is today contributing about as much energy as moving water is

Of the following, which rank of coal has the most desirable burning properties and highest energy content?

Two students stand poised to leap off a high dive structure into the swimming pool below.Student B is twice as massive as student A.Which of the following is true?

While exploring an ancient Mayan tomb, you discover that the walls are closing in on you.By exerting 400 N of force, you are able to keep the wall from coming closer.The work you are doing on the wall is

The amount of energy produced by power-generating dams is

Which solar technology makes economic sense for a homeowner?

The energy an object has because of its position is called potential energy.

Plants convert radiant energy from the Sun into chemical energy by a process called photosynthesis.

What Is Science

Motion

Heat and Temperature

Wave Motions and Sound

Electricity

Light

Atoms and Periodic Properties

Chemical Bonds

Chemical Reactions

Water and Solutions

Organic Chemistry

Nuclear Reactions

The Universe

The Solar System

Earth in Space

Rocks and Minerals

Plate Tectonics

Building Earths Surface

Shaping Earths Surface

Geologic Time

The Atmosphere of Earth

Weather and Climate

Earths Waters

Filters