Physics

Question 1

What is energy?

Answer 1

Energy is the ability to do work, if an object does work it uses energy.

Question 2

How do we measure energy?

Answer 2

Joules, Kilojoules and Megajoules

Question 3

Types of Energy (10)

Answer 3

Kinetic, light, gravitational, chemical, potential, sound, elastic, heat, electrical, nuclear

Question 4

What is kinetic energy?

Answer 4

Kinetic energy is the energy of movement.

Question 5

What is the difference between heat and thermal energy?

Answer 5

Heat is the radiant heat energy given out as electro magnetic radiation by hot objects, where is thermal energy is heat flow form otter objects to colder objects.

Question 6

What is stored energy and how does it relate to potential energy?

Answer 6

Stored energy gives objects the potential to make things work, e.g. chemical gravitational elastic nuclear

Question 7

Define Potential chemical energy

Answer 7

Chemical energy is energy stored by food, fuels and batteries. In food when you digest it your body releases the energy to store so your body can work, or for fuel it released when its burnt (oil, wood, gasoline)

Question 8

Define gravitational energy

Answer 8

This is energy stored in an object due to its lost on above ground.

Question 9

FORMULAS CHECK BACK OF CARD

Answer 9

Work = force x distance
Power = work/distance

Work = force x distance
.
. .
Power = (force x distance)/ time