Energy Stores

Question 1

What is kinetic?

Answer 1

Anything moving has energy in its kinetic energy store.

Question 2

Thermal?

Answer 2

Any object. The hotter it is, the more energy it has in the store. You may also see thermal energy stores called internal energy stores.

Question 3

Gravitational potential?

Answer 3

Anything that has mass and is inside a gravitational field.

Question 4

Elastic potential?

Answer 4

Anything that is stretched (or composed) eg springs.

Question 5

Electrostatic?

Answer 5

Anything with electric charge that is interacting with another electric charge- eg two charges that attract or repel each other

Question 6

Magnetic?

Answer 6

Anything magnetic that is interacting with another magnet- eg two charges that attract or repel each other)

Question 7

Nuclear?

Answer 7

Atomic nuclei have energy in this store that can be released in nuclear reactions

Question 8

What type of a energy does a battery have?

Answer 8

Chemical battery

Question 9

What is useful energy?

Answer 9

Energy transferred to where it is wanted and in the form it is wanted

Question 10

What is wasted energy?

Answer 10

Wasted energy is energy that is not usually transferred

Question 11

What happens to wasted energy?

Answer 11

Wasted energy is often ‘dissipated’ into surrounds or it is transferred to less useful energy stores. As energy dissipates it gets less and less useful

Question 12

What is the equation for wasted power?

Answer 12

Power wasted = total power in - useful power out