Yr9 Physics-Energy

Question 1

What is the equation for kinetic energy?

Answer 1

Ek = 0.5 x m x v squared

Question 2

What is the equation for Gravitational Potential Energy?

Answer 2

Ep = m x g x h

Question 3

What are the equations for power?

Answer 3

P = E / T
P = W / T

Question 4

What is the equation for elastic potential energy?

Answer 4

Ee = 0.5 x k x e squared

Question 5

What is the equation for force in springs?

Answer 5

F = k x e`

Question 6

What is the equation for weight?

Answer 6

W = m x g

Question 7

What is the equation for efficiency?

Answer 7

Efficiency = useful energy output / total energy output

Question 8

What is the equation for work done?

Answer 8

W = F x s

Question 9

What two quantities does a vector have?

Answer 9

Direction and magnitude

Question 10

What is the unit for specific heat capacity?

Answer 10

Joules per (kilogram x degrees Celsius) 
J/(kg * degrees c)

Question 11

What is the unit for spring constant?

Answer 11

Newtons per meter

Question 12

What is the unit for extension?

Answer 12

Meters

Question 13

What is the unit for temperature?

Answer 13

Degrees Celsius

Question 14

What is the unit for energy?

Answer 14

Joules

Question 15

What is the unit for force?

Answer 15

Newtons

Question 16

What is the unit for distance?

Answer 16

Meters

Question 17

What is the unit for mass?

Answer 17

Kilograms

Question 18

What is the unit for work done?

Answer 18

Joules

Question 19

What is the unit for velocity or speed?

Answer 19

Meters per second

M/S

Question 20

What is the unit for power?

Answer 20

Watts

Question 21

What is the unit for time?

Answer 21

Seconds

Question 22

What are the three fossil fuels?

Answer 22

Natural Gas
Coal
Oil

Question 23

Name 5 renewable sources of energy

Answer 23

Solar power
Tidal power
Wave power
Wind power
Geothermal
Biofuel
Hydroelectricity

Question 24

Name 4 non-renewable sources of energy

Answer 24

Coal
Oil
Natural Gas
Nuclear