Energy, Work, and Power

Multiple Choice

Energy stored because of gravity is called:

• Gravitational Potential Energy

• Kinetic Energy

• Mechanical Advantage

• Chemical Energy

Multiple Choice

Which would have the LEAST gravitational potential energy (GPE)?

• A ball sitting on the ground

• Moon viewed from the Earth

• An airplane flying 30,000 feet above the ground

• A rock sitting on top of Mt. Everest

Multiple Choice

How could you increase the object's gravitational potential energy (GPE) without changing its distance from the ground (height) and gravity?

• Decrease the object's mass

• Increase the object's height

• Increase the object's mass

• Decrease the object's height

Multiple Choice

____________ is the ability to do work.

• Energy

• Force

• Friction

• Motion

Multiple Choice

When you are holding a book, energy is stored between the book and Earth; this type of energy is called ________ potential energy.

• Kinetic Energy

• Chemical Energy

• Gravitational Potential Energy

• Electric Energy

Multiple Choice

Which of the following is the correct equation for calculating an object's gravitational potential energy?

• PE = mgh

• PE = mg / h

• PE = mg + h

• PE = gh

Multiple Choice

What is the gravitational potential energy (GPE) of a 1 kilogram book that is 1 meter above the ground?

g = 9.8 m/s²

• 9.8 Joules

• 1.0 Joule

• 0.10 Joule

• 11.8 m/s²

Multiple Choice

The equation for spring force is

• F_sp = mgh

• F_sp = 1/2kx²

• F_sp = Fd

• F_sp = -kx

Multiple Choice

WHEN AN ARCHER BENDS A BOW, WHAT TYPE OF ENERGY INCREASES IN THE BOW?

• GRAVITATIONAL

• ELASTIC

• KINETIC

• THERMAL

Multiple Choice

A spring with spring constant 16 N/m is compressed by 0.5 m. How much energy is stored in the spring?

• 1 J

• 0.25 J

• 2 J

• 16 J

Multiple Choice

The SI unit of Spring Potential Energy is?

• Joules

• Watts

• Newtons

• meters

Multiple Choice

Calculate the force a spring with a spring constant of 16 N/m that is compressed by 0.5 m will exert.

• 32 N

• - 32 N

• - 8 N

• 16 N

Multiple Choice

The SI unit of Spring Force is?

• Joules

• Watts

• Newtons

• meters

Multiple Choice

Work is done when a weightlifter holds a barbell still above his head.

• True

• False

Multiple Choice

You push against the back of your friends car that is stuck. You push and be become very tired, but the car does not move. Did you do work?

• Yes, work was done

• No, work wasn't done

Multiple Choice

The amount of work done in a certain amount of time is known as 

• work

• effort force

• resistance force 

• power

Multiple Choice

Person A and Person B are both using the same amount of work to lift something. Person A takes half as much time to do it. Who has greater power.

• Person A

• Person B

Multiple Choice

How much work is done in holding a 15 N sack of potatoes while waiting in line at the grocery store for 3 minutes?

• 15 J

• 45 J

• 0 J

• 5 J

Multiple Choice

The unit used to measure power is the 

• Watt

• Newton

• Joule

• Newton*meter

Multiple Choice

You use 950 J of energy to push a sofa. If it took you 5 sec to move the sofa, what was your power?

• 190 J

• 4750 J

• 4750 W

• 190 W

Multiple Choice

Nuclear power plants rely on which of the following reactions to generate energy?

• Fusion

• Half-life

• Fission

• Fusion or fission

Multiple Choice

Where does fusion occur naturally?

• Underwater

• All around us

• In the radioactive waste

• On the sun

Multiple Choice

Which of the following best describes the process of nuclear fission? 

• Splitting an atom's nucleus apart 

• Separating an atom's electrons from its nucleus 

• Fusing two atomic nuclei together 

• Splitting an atom's electrons in half 

Multiple Choice

Nuclear power uses ____ for fuel.

• steel

• coal

• uranium

• hydrogen

Multiple Choice

The time needed for half of a radioactive sample to decay is called its __________.

• decay period

• period

• transmutation time

• half-life

Multiple Choice

The splitting of a nucleus into smaller nuclei is

• fusion

• fission

• decay

• gamma radiation

Multiple Choice

This happens naturally due to an unstable nucleus.

• fission

• fusion

• radioactive decay

• K-capture

Multiple Choice

This is an example of...

• Chain reaction

• Fusion reaction

• Decomposition reaction

• Decay

Multiple Choice

Which of the following is true about nuclear fusion?

• It is easy to implement.

• It produces less energy than nuclear fission.

• It produces more energy than nuclear fission.

• It has the ability to occur easily in everyday life.

Multiple Choice

Which reaction represents fission?

Multiple Choice

What occurs in both fusion and fission reactions?

• Small amounts of energy are converted into large amounts of matter.

• Small amounts of matter are converted into large amounts of energy.

• Heavy nuclei are split into lighter nuclei.

• Light nuclei are combined into heavier nuclei.

Multiple Choice

Which reaction represents fusion?