LEARN IT 1: Energy

LEARN IT 1: Energy

List the 8 energy stores

What is a system?

What is a closed system?

What ways can energy be transferred in systems?

Describe in full the energy transfer for a ball thrown up into the air

Describe in full the energy transfer for a ball dropped

Describe in full the energy transfer for a car braking

Describe in full the energy transfer for a collision between two cars

What is the formula for kinetic energy?

What is the formula for gravitational potential energy

What is the formula for elastic potential energy?

What will be the ‘properties’ of something with a large amount of kinetic energy?

What will be the ‘properties’ of something with a large amount of gravitational potential energy?

What will be the ‘properties’ of something with a large amount of elastic potential energy?

What are the units for spring constant?

What does a large value of spring constant mean?

What is the conservation of energy principle?

What does dissipated mean?

What usually happens to wasted energy?

What is the definition of power?

If something has a power of 3 watts, what does this mean?

If something has a power of 10kW, what does this mean?

What are the formulae for power?

What does work done mean?

What methods could be used to reduce wasted energy in a bicycle?

What methods could be used to reduce wasted energy in a house?

How does cavity wall insulation reduce wasted energy by heating?

What does high thermal conductivity mean?

How does double glazing reduce wasted energy transfer by heating

What does efficient mean?

What are the two formula for calculating efficiency?

Why can efficiency never be greater than
1 or 100%?

What does an efficiency of 0.5 or 50% tell you?

Only one type of device is nearly 100% efficient. Which one?

What is a non-renewable energy resource?

List the non-renewable energy resources

What is a renewable energy resource?

List the renewable energy resources

List the energy resources than can be used in transport (cars, trains etc)

List the energy resources that can be used for heating

In a sentence, describe simply how wind power works

In a sentence, describe simply how solar cells work

In two sentences, describe simply how geothermal power works

In three sentences, describe simply how hydroelectric power works

In two sentences, describe simply how wave power works

In two sentences, describe simply how tidal barrages work

In three sentence, describe simply how
bio-fuels are used

In a sentence, describe simply how nuclear power stations work

Give the advantages and disadvantages of wind power

Give the advantages and disadvantages of solar cells

Give the advantages and disadvantages of geothermal power

Give the advantages and disadvantages of hydroelectric power

Give the advantages and disadvantages of wave power

Give the advantages and disadvantages of tidal power

Give the advantages and disadvantages of biofuel power

Give the advantages and disadvantages of nuclear power

Give the advantages and disadvantages of fossil fuel power stations

Solar panels are sometimes filled with water. Why?

What is the difference between the words reliable and predictable?

What are the patterns and trends in the use of energy resources?

Why are we trying to use more renewable energy resources?

Although science can identify environmental issues to do with non-renewable energy resources, it does not mean we can just switch to using renewable ones.
Why?

What are the symbols and units of:
energy (general)
kinetic energy
gravitational potential energy
elastic potential energy

What are the symbols and units of:
mass

What are the symbols and units of:
velocity or speed

What are the symbols and units of:
gravitational field strength

What are the symbols and units of:
spring constant

What are the symbols and units of:
Extension

What are the symbols and units of:
height

What are the symbols and units of:
power

What are the symbols and units of:
work done

What are the symbols and units of:
time