Conservation of energy

Question 1

What is the equation for GPE

Answer 1

mass x change in height x gravitational field strength

Question 2

What is the equation for energy efficiency

Answer 2

useful energy transferred divided by total energy supplied

Question 3

What are the 2 equations for wave speed

Answer 3

wave speed= distance divided by time

wave speed= frequency x wavelength

Question 4

What is the equation for Kinetic energy

Answer 4

1/2 x mass x velocity squared

Question 5

What is Earths gfs

Answer 5

9.81N/kg

Question 6

What are all of the energy stores/transfers

Answer 6

Heat, electric, light, potentials, sound, atomic, chemical and kinetic

Question 7

Which of the energy stores/transfers are transfers

Answer 7

Electric and light

Question 8

What does the law of conservation of energy state

Answer 8

Energy cant be created or destroyed, it can only be transferred from one store to another

Question 9

Name some renewable energy sources

Answer 9

Wind, tidal, solar, geothermal, hydroelectric

Question 10

Name some non-renewable energy sources

Answer 10

Nuclear, coal and natural gas

Question 11

Name some advantages of renewable energy sources

Answer 11

Better for the environment (sometimes), generally cheaper in the long run, wont run out and they dont use greenhouses gases (therefore dont contribute to global warming).

Question 12

Name some environmental issues caused by nuclear power

Answer 12

The waste is radioactive and toxic