Conservation and dissipation of energy

Question 1

Work done

Answer 1

Energy is transferred

Question 1

Conservation of energy law

Answer 1

Energy cannot be created or destroyed, it can only be transferred from one form to another

Question 2

Gravity

Answer 2

Force of attraction between 2 objects

Question 3

Kinetic

Answer 3

Energy it possesses due to its motion

Question 4

What happens to an objects kinetic energy as it rises?

Answer 4

converts into gravitational potential engery

Question 5

What happens to an objects GPE as it falls?

Answer 5

Converts into kinetic energy

Question 6

Conservation of energy principle

Answer 6

Energy can transfer usefully, stored or dissipated, but never created or destroyed

Question 7

What are the 8 energy stores?

Answer 7

• thermal
• kinetic
• nuclear
• electrostatic
• magnetic
• elastic
• chemical
• gravitational potential

Question 8

What does it mean if a system changes?

Answer 8

energy has been transferred

Question 9

What is meant by the term ‘closed system’?

Answer 9

Neither matter nor energy can enter or leave from the outside world
- overrall energy change is 0

Question 10

What are the 5 ways energy can be transferred

Answer 10

• mechanically
• electrically
• heating
• radiation