Physics

Question 1

What equation links energy, power and time?

Answer 1

Energy = power x time

Question 2

What equation links distance, force, and work done?

Answer 2

Work done (j) = force (N) x distance moved (m)

Question 3

What is the unit used to measure energy?

Answer 3

Joules

Question 4

Are fossil fuels renewable or non-renewable?

Answer 4

Non-renewable

Question 5

Power tells us hoe quickly……….. is transferred by a device

Answer 5

Energy

Question 6

What is the law of conservation of energy?

Answer 6

Energy cannot be created or destroyed

Question 7

When you work to move or squash an object you transfer…….

Answer 7

Energy

Question 8

3 things that affect the thermal energy of an object

Answer 8

Mass
Temperature
What it as made of

Question 9

Can energy be transferred by conduction in liquids?

Answer 9

No, only in solids

Question 10

How is energy transferred in fluids?

Answer 10

Convection

Question 11

What is a fluid?

Answer 11

Any liquid or gas

Question 12

Is light a longitudinal or transverse wave?

Answer 12

Transverse

Question 13

what unit is used for potential difference?

Answer 13

volts

Question 14

How do you find potential difference?

Answer 14

Potential difference = current x resistance

Question 15

What is resistance measured in?

Answer 15

Ohms

Question 16

What do you use to measure resistance in a circuit?

Answer 16

Ohmeter

Question 17

Objects can be positively or negatively charged by transferring…..

Answer 17

Electrons

Question 18

What is the difference between a magnet and an electromagnet?

Answer 18

Electromagnets can be turned on and off, unlike magnetos

Magnets often naturally occur in elements like iron, whereas electromagnets are always artifically prepared

Question 19

How do you make an electromagnet?

Answer 19

Wrap an insulated wire around an iron core and allow current to flow through the wire