Conservation of energy

Question 1

What are the 8 types of energy stores?

Answer 1

1. Kinetic
2. Thermal
3. Chemical
4. Gravitational potential
5. Elastic potential
6. Electrostatic
7. Magnetic
8. Nuclear

Question 2

Example of kinetic store

Answer 2

Anything that is moving

Question 3

Example of a thermal store

Answer 3

any object (the hotter it is the more energy it has)

Question 4

Example of a chemical store

Answer 4

anything that releases energy by chemical reaction. E.g Fuel

Question 5

Example of a gravitational potential store

Answer 5

anything which can fall(in a gravitational field)

Question 6

Example of an Elastic potential store

Answer 6

anything stretched. Springs + rubber bands

Question 7

Example of a Magnetic store

Answer 7

magnets that repel/ attract

Question 8

Example of a nuclear store

Answer 8

atomic nuclei release this energy from this store in nuclear reactions

Question 9

Four ways in which energy is transferred

Answer 9

Mechanically-
Electrically

By heating

By radiation

Question 10

how is energy transferred mechanically?

Answer 10

moves due to a force acting on it

Question 11

What is the principle of conservation of energy

Answer 11

Can never be created or destroyed

Question 12

What does total energy input =

Answer 12

Total energy = useful energy output + wasted energy

Question 13

Example of an electrostatic store

Answer 13

Two charges that attract or repel each other