Energy Transformation Lesson

Energy Transformation

Lesson

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

There are lots of different energy types.

All energy is either a type of potential energy or a type of kinetic energy.

Potential energy is energy that is stored in objects.

Types of potential energy include: chemical energy, gravitational energy, and elastic energy.

Multiple Select

Select all the examples of potential energy.

• Gravitational energy

• Chemical energy

• Elastic energy

• Sound energy

• Thermal energy

Gravitational energy is energy that is stored in objects because of gravity.

The higher something is off the ground, the more gravitational potential energy it has.

Elastic energy is energy that is stored in objects that are compressed or stretched.

Chemical energy is energy that is stored in the chemical bonds of objects atoms.

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

Which object below has chemical energy?

• The blades on a fan turning

• The food we eat

• An electrical outlet

• A person running

Kinetic energy is energy due to motion. Anything that is moving has kinetic energy.

Types of kinetic energy include: thermal energy, electrical energy, radiant energy, and sound energy.

Multiple Select

Select all the examples of kinetic energy.

• Chemical energy

• Elastic energy

• Thermal energy

• Sound energy

• Radiant energy

Mechanical Energy is the energy of moving things.

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

Thermal Energy is the total amount of atom movement in an object.

Thermal Energy is the total amount of atom movement in an object. We see this as how much heat an object has.

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

Electrical energy is the energy of the movement of charged particles, known as a current.

Multiple Choice

Which object below uses electrical energy?

• A television

• The muscles in your body

• A campfire

• A pile of firewood

Multiple Choice

Which object below uses electrical energy?

• A radio

• A plant

• A boy running

• A candle

Sound energy is energy caused by the vibration of air particles.

Multiple Choice

Which object below has sound energy?

• A person yelling

• A plant

• A pile of firewood

• A candle

Multiple Choice

Which object below has sound energy?

• A radio

• A solar panel

• A tank of gas

• A battery

Radiant energy is energy that is moved by electromagnetic waves.

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

Energy Transformations

The law of conservation of energy states that energy cannot be created or destroyed, it just changes forms.

An energy transformation occurs when energy is changed from one form to another.

During an energy transformation there are source objects and receiver objects.

The source object is the object that provides the energy for the transfer.

The receiver object is the object that gains energy from the source object.

For example: The source object in the energy transformation in a flashlight is the battery.

The battery has chemical energy and the flashlight uses that energy to make light.

A Flashlight starts with chemical energy and ends with radiant energy.

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.

A Wind Turbine

A wind turbine starts with MECHANICAL energy because the wind moves the blades. It ends with ELECTRICAL energy because the moving blades generate electricity.

Now it's your turn

Answer the following questions about energy transformations. You must score at least an 80 to earn credit. Take it again if you did not score at least a 80. (90 for Pre-AP)

Multiple Choice

What type of energy does a lion running START with?

• Mechanical energy

• Light Energy

• Chemical Energy

• Thermal Energy

• Electrical Energy

Multiple Choice

What type of energy does a lion running END with?

• Mechanical energy

• Light Energy

• Chemical Energy

• Thermal Energy

• Electrical Energy

Multiple Choice

What type of energy does a blender START with?

• Mechanical energy

• Light Energy

• Chemical Energy

• Thermal Energy

• Electrical Energy

Multiple Choice

What type of energy does a blender END with?

• Mechanical energy and sound energy

• Light Energy

• Chemical Energy

• Thermal Energy

• Electrical Energy

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 and ________ energy.

• Electrical

• Mechanical

• Thermal

• Chemical

Multiple Choice

A stove changes chemical or electrical energy into _______ energy.

• Sound

• Mechanical

• Thermal

• Light

Multiple Choice

A computer changes ______ energy into sound and light energy.

• Electrical

• Mechanical

• Thermal

• Light

Multiple Choice

Energy transformation is about how energy can _______ from one type into another.

• be created

• change

• be destroyed

• increased

Multiple Choice

Which energy is heat energy?

• Mechanical energy

• Light energy

• Thermal energy

• Chemical energy

• Electrical energy

Multiple Choice

Which energy is moving energy?

• Mechanical energy

• Light energy

• Thermal energy

• Chemical energy

• Electrical energy

Multiple Choice

Which energy is stored energy?

• Mechanical energy

• Light energy

• Thermal energy

• Chemical energy

• Electrical energy

Multiple Choice

Which energy is energy we can see?

• Mechanical energy

• Light energy

• Thermal energy

• Chemical energy

• Electrical energy

Multiple Choice

Which energy are we using when we plug something into an outlet?

• Mechanical energy

• Light energy

• Thermal energy

• Chemical energy

• Electrical energy

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

Light energy is also known as

• radiant energy

• thermal energy

• heat energy

• nuclear energy

Multiple Choice

A hairdryer changes-

• chemical to electrical

• electrical to thermal

• electrical to solar

• thermal to mechanical to light

Multiple Choice

Plants turn_______ energy into _______ energy for food.

• thermal, mechanical

• radiant, chemical

• electromagnetic, light

• potential, kinetic