Energy Revision

Question 1

Is energy needed ta make things happen?

Answer 1

Yes

Question 2

State the different forms of energy

Answer 2

Kinetic
Chemical
Elastic
Electrostatic 
Gravitational
Magnetic
Thermal

Question 3

Give examples of simple energy transfers from everyday life

Answer 3

Mechanical work
Electrical work
Heating
Light radiation

Question 4

What is the law of conservation?

Answer 4

Energy can not be created or destroyed it can only be transferred.

Question 5

What is the unit for measuring energy?

Answer 5

Joules

Question 6

How we convert between Joules and Kilojoules?

Answer 6

1 kilojoule is 1000 Joules

Question 7

Explain why different people need different amounts of energy

Answer 7

Because some people weight more than other and if you weight more you need to have more energy so you can move. As well a baby needs a lot of energy so he can do MRS NERG/GREN process.

Question 8

Describe how to test a to find out how much energy it contains.

Answer 8

Burning that food and the you put the food under a beaker with water so you can see how much the water changes compared with other food.

Question 9

Discuss the effects of the body of too much or too little food and exercise.

Answer 9

With too little food you have very little energy to move and the problem of not doing exercise is that you don’t waste the energy so the spear energy transforms in fat.

Question 10

From where do plants get the energy from?

Answer 10

From the sun because of photosynthesis.

Question 11

State the three types of fossil fuels

Answer 11

Coal
Oil
Gas

Question 12

Describe how fossil fuels were created.

Answer 12

Trees, plants or dead fish fall to the bottom of the sea/muddy swamp and covered. After millions of years because pressure and heat they are turned in into fossil fuels.

Question 13

What is solar power?

Answer 13

Solar power is getting energy from the sun by some solar panels

Question 14

What is wind power

Answer 14

Wind power is when you get energy by some turbines spinning by the wind

Question 15

What is biomass energy?

Answer 15

Biomass energy is when you burn trees that heats water into water vapour and the water vapour spins a turbine

Question 16

What is geothermal energy?

Answer 16

Geothermal energy is when they dig to the earth surface and then they put water in the whole and the water becomes vapour and the vapour spins a turbine.

Question 17

What is hydroelectric energy?

Answer 17

Hydroelectric energy is that they use like a river that water is flowing quickly and then it spins a turbine which is pained by the water flowing past.