Energy Notes

Question 0

Solar Energy

Answer 0

• Solar energy is the energy from the sun, which provides heat and light.
• Solar energy can be converted into electric energy with solar cells.
• Solar energy is the energy source for all green plants.
• Most energy that we use on earth is solar.

Question 1

Heat Energy

Answer 1

• Heat energy is the transfer of thermal energy.
• As heat energy is added to a substance, the substances heat increases.
• Materials that are burning, the sun, and electricity are all forms of heat energy.

Question 2

Chemical Energy

Answer 2

• Chemical energy is the energy stored in partials of matter.
• Chemical energy can be released, for example energy in batteries.

Question 3

Electrical Energy

Answer 3

• Electrical energy is the energy flowing in an electric circuit.
• Sources of electric energy include: stored chemical energy in batteries, solar energy in solar cells, fuels or hydroelectric energy in generators.

Question 4

Mechanical Energy

Answer 4

• Mechanical energy is the energy due to motion and position of an object.
• When objects are set in motion or are in a position where they can be set in motion, they have mechanical energy.

Question 5

Mechanical Potential Energy

Answer 5

• Mechanical potential energy is related to the position of an object.

Question 6

Mechanical Kinetic Energy

Answer 6

• Mechanical kinetic energy increases as the object moves faster.