Forms Of Energy

Question 1

What are the two main groups of energy?

Answer 1

Energy in ACTION

STORED energy

Question 2

What is light energy?

Answer 2

Light energy from the sun makes plants grow and burns your skin. It can be focused to make a photograph on film in a solar barbecue.

Question 3

What is kinetic energy?

Answer 3

Any moving object has kinetic energy.

Question 4

What is sound energy?

Answer 4

Sound energy is a special type of energy. It is the energy of sir when it vibrates (moves to and fro). Small amounts of sound energy can cause hear sounds. Large amounts can break a window of even a whole building.

Question 5

What is heat energy?

Answer 5

Heat is a form or energy because it makes things happen. Example, heat from burning coal make a steam engine go and the steam in a kettle can make a whistle blow.

Question 6

What is electrical energy?

Answer 6

This the energy pushing an electrical current through the a conductor. It makes light work, runs computers, hair driers television sets etc.

Question 7

What is energy?

Answer 7

Energy is what makes things happen. Nothing can live, move and grow or give off light heat or sound without energy.

Question 8

What do cars and machines need to work?

Answer 8

Fuel.

Question 9

We have to work during the day and to do this we need ____.

Answer 9

Energy

Question 10

How do we get energy?

Answer 10

From the food that we eat.

Question 11

What does energy mean to a scientist?

Answer 11

The ability to do work.

Question 12

What are places where energy is stored called?

Answer 12

Sources of energy

Question 13

We come into ____ with sources of energy everyday. We get food from the supermarkets , petrol from the garage and gas through pipes.

Answer 13

Contact

Question 14

What is our main source of energy?

Answer 14

The sun

Question 15

What does the sun do?

Answer 15

Radiates energy in the form of light and heat.

Question 16

What is the process called where green plants use the energy from the sun to make food?

Answer 16

Photosynthesis

Question 17

What happens after photosynthesis?

Answer 17

Plants then eat the plants, then they use some of the energy and store the rest.

Question 18

What is also used to heat our homes and pools?

Answer 18

Solar energy

Question 19

What does wind energy do?

Answer 19

From the earliest centuries wind energy has been used by people to sail boats on water, carrying people and cargo and to pump water using windmills.

Question 20

What is the energy of falling water used for?

Answer 20

To turn water-wheels and grind mealies.

Question 21

What is falling water at waterfalls , power stations at large dams used for?

Answer 21

To turn dynamos.

Question 22

What are in these dynamos?

Answer 22

A copper wire spool moves between two magnets and generates electrical energy or electricity.

Question 23

What help power ships and steam engines?

Answer 23

Hot water and steam.

Question 24

Electricity can be also produced by using the power of falling water such as ____ and ____ dams. This is called ______ power.

Answer 24

Waterfalls
Artificial
Hydroelectric