energy

Question 1

what are all the energy store types

Answer 1

-kinetic
-chemical
-elastic potential
-nuclear
-gravitational potential
-magnetic

Question 2

when a swinging pirate ship swings what energy is being used?

Answer 2

kinetic energy into gravitational potential

Question 3

what energy is being transferred when a boat is accelerated by the force of an engine

Answer 3

The boat pushes through the water as chemical energy is transferred into kinetic energy

Question 4

what energy is transferred when boiling water in a kettle?

Answer 4

Electricity through the kettle increases the internal energy then increases the internal (thermal) energy of the water which increases the temperature of the water

Question 5

what is dissipation?

Answer 5

used to describe ways in which energy is wasted.
energy that is not transferred to useful energy stores is said to be wasted because it is lost to the surroundings.

eg. sound from hairdryer

Question 6

what happens when a skydiver jumps out of a plane? (using energy stores)

Answer 6

loses gravitational potential energy
as
his height decreases and
he gains kinetic energy as his speed increases

Question 7

equation for work done

Answer 7

w = f x d

work done- joules
force- newtons
distance- metres

Question 8

What is useful energy in an electric kettle?

Answer 8

Energy that heats the water.

Internal (thermal) energy heating the kettle.

Question 9

What is wasted energy in an electric kettle?

Answer 9

Infrared radiation lost to the surroundings.

Question 10

What is useful energy in a hair dryer?

Answer 10

Internal (thermal) energy heating the air. Kinetic energy of the fan that blows the air.

Sound radiation. Internal (thermal) energy heating the hairdryer.

Question 11

What is wasted energy in a hair dryer?

Answer 11

Infrared radiation lost to the surroundings.

Question 12

What is useful energy in a light bulb?

Answer 12

Light radiation given out by the hot filament.

Question 13

What is wasted energy in a light bulb?

Answer 13

Infrared radiation lost to the surroundings.

Question 14

What is useful energy in a TV?

Answer 14

Light radiation that allows the image to be seen. Sound radiation that allows the audio to be heard.

Question 15

Where does energy come from?

Answer 15

Energy comes from different resources in the world, with varying amounts stored by them.

Question 16

What is an example of a high-energy resource?

Answer 16

The nuclear energy within 1 kg of uranium contains a very large amount of energy.

Question 17

What is an example of a lower-energy resource?

Answer 17

The gravitational potential energy stored by many thousands of tonnes of water held back by a dam contains less energy.

Question 18

What is a renewable energy resource?

Answer 18

A renewable energy resource is one that is being (or can be) replenished as it is used.

Question 19

What is an example of human action in renewable resource replenishment?

Answer 19

Trees cut down for bio-fuel are replaced by planting new trees.

Question 20

What is an example of a natural process in renewable resource replenishment?

Answer 20

Water let through a dam for hydroelectricity is replaced through the water cycle.

Question 21

What is a non-renewable energy resource?

Answer 21

A non-renewable energy resource is one with a finite amount that will eventually run out.

Question 22

What are fossil fuels?

Answer 22

Fossil fuels include oil, coal, and natural gases.

Question 23

What type of energy store are fossil fuels?

Answer 23

Chemical

Question 24

Are fossil fuels renewable?

Answer 24

No, they are non-renewable.

Question 25

What are the uses of fossil fuels?

Answer 25

Transport, heating, electricity generation

Question 26

What is the power output of fossil fuels?

Answer 26

High

Question 27

What is the environmental impact of fossil fuels?

Answer 27

They release CO2, which causes global warming.

Question 28

What are nuclear fuels?

Answer 28

Nuclear fuels are used for energy generation.

Question 29

What type of energy store are nuclear fuels?

Answer 29

Nuclear

Question 30

Are nuclear fuels renewable?

Answer 30

No, they are non-renewable.

Question 31

What is the primary use of nuclear fuels?

Answer 31

Electricity generation

Question 32

What is the power output of nuclear fuels?

Answer 32

Very high

Question 33

What is the environmental impact of nuclear fuels?

Answer 33

Radioactive waste needs to be disposed of safely.

Question 34

What is a bio-fuel?

Answer 34

A bio-fuel is a chemical energy resource that is renewable and used for transport, heating, and electricity generation.

Power output is medium and it is considered ‘carbon neutral’, resulting in low environmental impact.

Question 35

What is wind energy?

Answer 35

Wind energy is a renewable energy resource that stores kinetic energy and is primarily used for electricity generation.

Power output is very low, and it occupies large areas that could be used for farming; some people believe windmills spoil the view.

Question 36

What is hydroelectricity?

Answer 36

Hydroelectricity is a renewable energy resource that stores gravitational potential energy.

It is also used for electricity generation.

Question 37

What is a bio-fuel?

Answer 37

A bio-fuel is a chemical energy resource that is renewable and used for transport, heating, and electricity generation.

Power output is medium and it is considered ‘carbon neutral’, resulting in low environmental impact.

Question 38

What is wind energy?

Answer 38

Wind energy is a renewable energy resource that stores kinetic energy and is primarily used for electricity generation.

Power output is very low, and it occupies large areas that could be used for farming; some people believe windmills spoil the view.

Question 39

What is hydroelectricity?

Answer 39

Hydroelectricity is a renewable energy resource that stores gravitational potential energy.

It is also used for electricity generation.