7I: Energy Resources

If something is moving, it has
1. kinetic energy
2. chemical energy
3. potential energy
4. movement energy
Microphones convert
1. sound energy into electrical energy
2. electrical energy into sound energy
3. chemical energy into sound energy
4. sound energy into chemical energy
When an object is high up on a shelf, it has
1. gravitational potential energy
2. chemical energy
3. strain energy
4. kinetic energy
Which are all non-renewable energy resources?
1. coal, oil, natural gas, nuclear power
2. coal, oil, natural gas, solar power
3. coal, oil, natural gas, geothermal power
4. coal, oil, natural gas, biomass
Energy is measured in
1. Joules
2. Watts
3. Volts
4. decibels
A battery changes
1. chemical energy into electrical energy
2. electrical energy into light energy
3. electrical energy into heat energy
4. light energy into chemical energy
A loudspeaker changes
1. electrical energy into sound
2. sound into electrical energy
3. chemical energy into sound energy
4. sound energy into chemical energy
A dynamo changes
1. kinetic energy into electrical energy
2. electrical energy into kinetic energy
3. chemical energy into electrical energy
4. electrical energy into chemical energy
A light bulb changes
1. electrical energy into light, and waste heat
2. electrical energy into heat
3. electrical energy into light
4. light into electrical energy
Fuels contain
1. chemical energy
2. heat energy
3. kinetic energy
4. waste energy
1,000 joules is called a
1. kilojoule
2. millijoule
3. megajoule
4. centijoule
Strain energy
1. is stored in springs, and compressed gases
2. is stored in a battery
3. is stored in an object we have lifted up high
4. is stored in foods and fuels
Chemical energy
1. is stored in batteries
2. is stored in gases under pressure
3. is stored in an object we have lifted up high
4. is energy of motion
Coal has been formed from
1. the remains of prehistoric plants
2. the remains of prehistoric animals
3. metamorphic rocks
4. magma
Oil has been formed from
1. the remains of prehistoric animals
2. the remains of prehistoric plants
3. metamorphic rocks
4. magma
Energy from hot rocks deep inside the Earth is called
1. geothermal energy
2. rock energy
3. steam energy
4. geyser energy
Renewable energy resources
1. won't run out
2. mean we can use the energy again and again
3. need to be replaced, or they will run out
4. include nuclear power
An electrical cell transfers
1. chemical energy to electrical energy
2. electrical energy to light energy
3. electrical energy to heat energy
4. electrical energy to chemical energy
a clockwork toy transfers
1. strain energy to kinetic energy + sound + waste heat
2. strain energy to kinetic energy
3. elastic energy to sound energy
4. elastic energy to heat
a battery-powered torch transfers
1. chemical energy --> electrical energy --> heat + light
2. electrical energy --> light energy
3. electrical energy --> heat + light
4. chemical energy --> heat + light
an electric bell transfers
1. electrical energy --> heat + kinetic energy --> sound
2. electrical energy --> sound
3. electrical energy --> heat
4. sound energy --> electrical energy
whenever any energy transfer takes place
1. there is always some heat energy produced
2. the total energy produced is always less than the energy put in
3. energy is made
4. energy is used up
if a light bulb is 20% efficient, then for every 100J of energy put in,
1. 20J of light will be produced
2. 100J of light will be produced
3. 80J of light will be produced
4. 20J of waste heat will be produced
stored energy is also called
1. potential energy
2. kinetic energy
3. light energy
4. chemical energy
the total amount of energy before a transfer is always
1. equal to the total amount afterwards
2. greater than the total amount afterwards
3. less than the total amount afterwards
4. equal to the useful energy produced
non-renewable energy resources are
1. coal, oil, natural gas, uranium
2. coal, oil, gas, biomass
3. coal, wave power, uranium
4. nuclear power, solar power, natural gas
nuclear power stations
1. use uranium as fuel
2. use huge amounts of fuel
3. produce very little energy
4. are quick to start up when demand suddenly increases
hydro-electric power stations
1. are quick to start up when demand suddenly increases
2. need large amounts of fuel
3. produce large amounts of carbon dioxide
4. are slow to start up when demand suddenly increases
wood, sugar cane and animal dung are known as
1. biomass
2. renewable
3. non-renewable
4. fossil fuels
a turbine is
1. like a fan, often in a power station and driven by steam
2. like a fan, often in a power station and driven by electricity
3. driven by a generator
4. a type of protective headgear