Energy & Energy Transformations Lesson

Energy & Energy Transformations Lesson

By Seantre Jones

All objects have energy and energy is constantly changing between objects.

Multiple Choice

What is Energy?

• The ability to do anything

• The ability to cause change

• The investigation of nature

• A fact of life

Multiple Choice

Energy cannot be created or destroyed.

• True

• False

Multiple Choice

Which object below has mechanical energy?

• A car driving

• A stack of firewood

• An apple

• A person yelling

Multiple Choice

Which object below has mechanical energy?

• The blades on a fan turning

• A tank of gasoline

• An electrical outlet

• A fire burning

Multiple Choice

Which object below has chemical energy?

• The blades on a fan turning

• A tank of gasoline

• An electrical outlet

• A fire burning

Multiple Choice

A campfire changes _________ energy into thermal and light energy.

• Electrical

• Mechanical

• Sound

• Chemical

Multiple Choice

Which object below has or uses light energy?

• A radio

• A solar panel

• A tank of gas

• A battery

Multiple Choice

Which object below has or uses light energy?

• A microwave

• A person running

• A radio

• A pile of firewood

Multiple Choice

Which object below uses electrical energy?

• A fan

• The muscles in your body

• A campfire

• A pile of firewood

Multiple Choice

Which object below uses electrical energy?

• A stove

• A plant

• A boy running

• A candle

Multiple Choice

Which object below has thermal energy?

• The blades on a fan turning

• The muscles in your body

• An electrical outlet

• Firewood burning

Multiple Choice

Which object below has thermal energy?

• The blades on a fan turning

• The muscles in your body

• An electrical outlet

• A stove heating a pot

Multiple Choice

Which object below has sound energy?

• A person yelling

• A plant

• A pile of firewood

• A candle

Multiple Choice

Which energy does a flashlight START with?

• Chemical energy

• Light energy

• Thermal energy

• Electrical energy

• Mechanical energy

Multiple Choice

Which energy does a flashlight END with?

• Chemical energy

• Light energy

• Thermal energy

• Electrical energy

• Mechanical energy

An Electric Pencil Sharpener

An electric pencil sharpener starts with ELECTRICAL energy because it won't work if you don't plug it in. It ends with MECHANICAL energy because you want the blades to move to sharpen your pencil.

A Person Running

A person running starts with CHEMICAL energy because you can't run if you don't have energy stored in your muscles. It ends with MECHANICAL energy because you are moving.

Multiple Choice

A fan changes electrical energy into __________ energy

• mechanical

• electrical

• thermal

• Chemical

Multiple Choice

A car driving changes _________ energy into mechanical energy.

• Electrical

• Mechanical

• Sound

• Chemical

Multiple Choice

A person running changes chemical energy into __________ energy.

• Electrical

• Mechanical

• Sound

• Chemical

Multiple Choice

A solar panel changes _________ energy into electrical energy.

• Electrical

• Mechanical

• Light

• Chemical

Multiple Choice

A campfire changes _________ energy into thermal and light energy.

• Electrical

• Mechanical

• Sound

• Chemical

Multiple Choice

An solar calculator changes light energy into _______ energy.

• Electrical

• Mechanical

• Sound

• Chemical

Multiple Choice

A blender changes electrical energy into sound snd ________ energy.

• Electrical

• Mechanical

• Thermal

• Chemical

Multiple Choice

A computer changes ______ energy into sound and light energy.

• Electrical

• Mechanical

• Thermal

• Light

Multiple Choice

Between a bowling ball and a soccer ball, which one has more kinetic energy and why?

• a bowling ball because it has more mass

• a bowling ball because it is smaller

• a soccer ball because it has more mass

• a soccer ball because it is smaller

Multiple Choice

Where would this tossed baseball have the least amount of kinetic energy?

• point W

• point X

• point y

• point z

Multiple Choice

Where would this tossed baseball have the greatest amount of kinetic energy?

• point W

• point X

• point y

• point z

Multiple Choice

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

• Potential
• Kinetic

Multiple Choice

What kind of energy is in a moving skateboard?

• Potential
• Kinetic

Multiple Choice

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

• 1
• 2
• 3
• 4

Multiple Choice

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

• 1
• 2
• 3
• 4

Multiple Choice

What is the equation for calculating gravitational potential energy

• mv

• 1/2 mv^2

• mgh

• Ft

Kinetic Energy and Potential Energy

Topic 3 Lesson 2

Kinetic Energy

• the amount of energy an object has due to its motion

• An objects kinetic energy is affected by an objects mass and speed.

• The faster an object moves the more kinetic energy the object has. 

• Kinetic energy also increases as mass increases.

Multiple Select

Check the boxes that are characteristics of kinetic energy.

• energy that results from position or shape of an object

• energy that an object possesses by being in motion

• increase in speed = increase in kinetic energy

• increase in mass = increase in kinetic energy

Multiple Choice

As mass decreases, kinetic energy increases.

• true

• false

Multiple Choice

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

• true

• false

Examples of Kinetic Energy

• a boulder rolling down a hill

• a moving car

• an airplane in flight

• a basketball falling through a net

• Riding a bike

• landslide of rocks and dirt moving down a hill

• roller coaster going up the tracks

Multiple Select

Check the boxes that are examples of kinetic energy being displayed.

• a moving car

• a glass falling on the floor

• ball rolling down a hill

• a book sitting on top of a desk

Multiple Choice

At what position does the rock have the greatest kinetic energy?

• A

• B

• C

• E

Potential Energy

• Is energy that is stored and waiting to be transferred.

• It is the energy that an object has based on its height, position, or shape.

• The higher the object, the greater the potential energy.

Multiple Select

Check the boxes that are characteristics of potential energy.

• The higher the object, the greater the potential energy

• The lower the object, the greater the potential energy.

• Is energy that is stored and waiting to be transferred.

• It is the energy that an object has based on its height and position.

Examples of potential energy

• standing on top of a diving board

• a stick of dynamite

• a stretched spring or rubber band

Multiple Choice

Which one of the following is NOT an example of potential energy?

• diving into a pool

• standing on top of a diving board

• a stretched spring or rubber band

• stick of dynamite

Multiple Choice

Look at the four vehicles.

The vehicles are all moving at the same speed along a road. Which of these statements is correct?

Choose the correct answer.

• The motorcycle has the most kinetic energy because it is the vehicle with the least mass.

• All the vehicles have the same kinetic energy because they are all moving at the same speed.

• The delivery truck has the greatest kinetic energy because its mass is greater than that of the other vehicles.

• The delivery truck has the greatest kinetic energy because it has the most tires in contact with the pavement.

Multiple Choice

If it an object is moving it has the ability to do _________

• energy

• work

• potential

• gravity

Multiple Choice

What is the correct unit for energy?

• meters (m)

• kilogram meters per second (kg m/s)

• Newtons (N)

• Joules (J)

Multiple Choice

What is the equation for calculating kinetic energy?

• mv

• 1/2 mv^2

• mgh

• Ft

Multiple Choice

Calculate the potential energy of a car with a mass of 2,500 kg that is on a hill 100 meters above sea level. (g = 10 Nkg^-1)

• 250,000 J

• 2,500,000 J

• 25,000,000 J

• 250 J