Energy Test Review

Energy Test Review

by William Lovering

Multiple Choice

Which of the following energy transformations occur when a lamp that is plugged into a wall socket is functioning correctly?

• Chemical to light
• Electrical to chemical
• Electrical to light
• Chemical to electrical

Multiple Choice

The roller coaster cart has the most kinetic energy at position-

• W

• X

• Y

• Z

Multiple Choice

The movement of thermal energy from a warmer object to a cooler object is called:

• heat
• temperature
• motion
• momentum

Multiple Choice

Heat transfer occurs:

• in many directions
• both from warm objects to colder ones and from cold objects to warmer ones
• only from warm objects to colder ones
• only from cold objects to warmer ones

Multiple Choice

A measure of the average kinetic energy of the individual particles in an object is called:

• thermal energy
• conduction
• convection
• temperature

Multiple Choice

Energy due to motion is ____________ energy. 

• Potential 
• Energy
• Kinetic
• Friction

Multiple Choice

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

• more
• less
• none of the above
• all of the above 

Multiple Choice

As mass increases, KE ...

• increases
• decreases
• stays the same

Multiple Choice

The SI unit in which kinetic energy is measured is 

• Newton
• Kilogram
• Joules
• Metres per second

Multiple Choice

Calculate the kinetic energy of a moving 4 kg object travelling at a velocity of 3 m/s.

• 18 J
• 36 J
• 12 J
• 6 J

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 gravitational potential energy of an object without changing its mass and gravity?

• Make the object larger

• Lower the object towards the ground

• Raise the object farther off the ground

• Allow the object to roll on the ground

Multiple Choice

Gravitational potential energy depends on the strength of gravity, ________ and ________ of the object.

• height and mass

• friction and movement

• mass and movement

• height and friction

Multiple Choice

What is the value of the Earth's acceleration due to gravity (g)?

• 9.8 m/s²

• 100 m/s²

• 25 m/s²

• 3.14 m/s²

Multiple Choice

Amy lit a firework rocket that moved skyward and produced a burst giving off light and a loud sound. Which statement is true about the energy transformation the firework underwent?

• The kinetic energy of the firework was transformed into chemical energy when moving skyward.

• The kinetic energy of the firework was transformed into potential energy when moving skyward

• The potential energy of the firework was transformed into kinetic energy when moving skyward.

• The potential energy of the firework was transformed into chemical energy when moving skyward.

Multiple Choice

A basketball player shoots a basketball into the air at an arc. The ball goes through the basket and lands on the ground.

At which point is the potential gravitational energy at its

greatest?

• when the basketball goes through the basket and hits the ground

• when the basketball leaves the player’s hands

• when the basketball nears the top of its arc

• when the basketball hits the ground

Multiple Choice

What does the Law of Conservation of Energy state?

• Energy can be created but not destroyed.

• Energy cannot be created but can be destroyed

• Energy can be created and destroyed.

• Energy cannot be created or destroyed.

Multiple Choice

What is gravity?

• A force
• Energy
• A push
• All of them

Multiple Choice

What is mass?

• How much MATTER makes up an object.
• How much GRAVITY is pulling an object.

Multiple Choice

What is the SI unit used to measure force? 

• pounds 
• grams 
• newtons 
• friction

Multiple Choice

If the mass of an object on Earth is 18 grams, what would the mass of the same object be on the Moon?

• 18 g
• 4 g
• 0 g 
• 32 g 

Multiple Choice

A child has a mass of 30 Kg on Earth. If the gravity on Moon is one sixth that of the Earth what is the mass of the child on Moon? 

• 30 Kg
• 180 Kg
• 5 Kg
• 0 Kg

Multiple Choice

The scientific unit of weight is

• Kg
• N
• pounds
• Kgm/s

Multiple Choice

The scientific unit for mass is

• Kg
• N
• pounds
• ounces

Multiple Choice

If an object mass =30 Kg on the Earth, what would be it's weight on Earth?

• 30 N
• 300 kg
• 3000N
• 300 N

Multiple Choice

The force of gravity on Jupiter is a little more than 2 times the gravitational force on Earth. If an object has a mass of 50 kg and a weight of 490 N on Earth, what would be the object's approximate mass and weight on Jupiter?

• 50 kg and 490 N
• 100 kg and 490 N
• 50 kg and 980 N
• 100 kg and 980 N

Multiple Choice

What is needed to calculate work?

• time and distance

• speed and distance

• force and direction

• acceleration and velocity

Multiple Choice

What is the unit of measurement for work?

• meters

• newtons

• m/s

• Joules

Multiple Choice

Is this an example of work?

• Yes

• No!

Multiple Choice

You have to push with 15 N of force to move it 10 meters. How much work do you do?

• 15 Joules

• 150 Joules

• 1.5 Joules

• .67 Joules

Multiple Choice

Which of these is a measurement of power?

• 100 joules
• 100 watts
• 100 meters per second
• 100 hertz

Multiple Choice

Which of the following is true about work?

• It measures how quickly an object accelerates
• It measures how much effort is applied over a distance.
• It measures the change of an object's rate of speed.
• It measures how much time it takes to move an object.

Multiple Choice

What units do we use to measure work?

• watts
• newtons
• joules
• meters

Multiple Choice

What is the equation for calculating power?

• distance / time
• work x time
• work / time
• force x distance

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

In order to do 20.5 J of work in 0.46 s, how much power is required?

• 44.57 W

• 9.43 W

• 32.35 W

• 11.56 W

Multiple Choice

The power rating of an electric lawnmower is 3000 W. If the lawnmower is used for 60 sec, how many joules of work can it do?

• 270,000 W

• 270,000 J

• 180,000 J

• 33.3 W