Exam Prep

Question 1

How do you make an ornament

Answer 1

Plaster of Paris + water mix set = ornament

Question 2

How do you make glue

Answer 2

Flour + water-mix-paste =glue

Question 3

How do you make a set

Answer 3

Polyfilla + water mix paste fill cracks = set

Question 4

How do you make jelly

Answer 4

Hot water + jelly powder cooling = solid jelly

Question 5

How do you make concrete

Answer 5

Cement powder + sand gravel + water - mix = concrete

Question 6

How do you make cement

Answer 6

Clay - limestone - heat - grind = cement

Question 7

How do you make porridge

Answer 7

Hot water - salt -maize meal - cooking = porridge

Question 8

How do you make bricks

Answer 8

Clay - shape into bricks - dry in air heat = bricks

Question 9

What do we use energy for

Answer 9

We use energy to walk run and play

Question 10

Where do we get our energy from

Answer 10

We get our energy from the food we eat

Question 11

Where do plants get their energy from

Answer 11

The sun

Question 12

Where do they store it

Answer 12

In their leaves stems and fruits

Question 13

What is this process called

Answer 13

Photosynthesis

Question 14

What are other types of fuels that store energy

Answer 14

Paraffin,coal,petrol,wood,gas and candle wax

Question 15

Define fuel

Answer 15

A substance that could be eaten or burned to produce energy

Question 16

Define stored energy

Answer 16

Energy that is stored in something eg. In food or fuel it can be changed

Question 17

Define input energy

Answer 17

Energy we need to put in to start a fuel burning

Question 18

Define output energy

Answer 18

Energy such as heat and light energy which is produced when a fuel is burning

Question 19

Define the elements of the fire triangle

Answer 19

1. Fuel
2. Heat
3. Oxygen

Question 20

What will happen if we take any of these elements away

Answer 20

You will put/extinguish the fire

Question 21

What is needed for a candle to burn

Answer 21

1. Fuel ( something that burns )
2. Oxygen ( found in the air around us )
3. Input energy ( to start the fuel burning )

Question 22

Can a fuel burn if you take away one of the elements from the fire triangle

Answer 22

No it cannot if you take one of the elements away you will put out the fire

Question 23

Define a candle snuffer

Answer 23

It is a long rod and at the end of it looks like a bell which takes away the oxygen from the fire putting it out

Question 24

How would you put out a fire

Answer 24

To put out a fire you would need to cut its air supply you can do this by smothering it with a wet blanket

Question 25

What are uses of controlled fires

Answer 25

We can use controlled fires to cook food to keep our self’s warm and to give us light

Question 26

What are the dangers with uncontrolled fires

Answer 26

Uncontrolled fires are dangerous they can put plants, animals and even our lives in danger and could damage property

Question 27

List ways in which we can prevent fires

Answer 27

1. Always place candles in a sturdy candle holder 2. Don’t pour lighter gel or petrol on a burning fire 3. Always extinguish an open fire eg.a campfire 4. Don’t play with matches 5. Don’t leave pots cooking on a stove with out adult supervision 6. If you suspect a gas leak call a professional 7. Don’t use damaged electrical appliances 8. Always place a fire guard in front of a fire 9. Don’t dry clothes by a heater or cooker

Question 28

What actions to take during a fire

Answer 28

1. Stay calm 2. Stay low 3. Make your way to the nearest exit 4. Get out and call the fire department

Question 29

Define prevent

Answer 29

To stop something before it happens

Question 30

Is electricity a type of energy

Answer 30

Yes

Question 31

What things use electricity and what do they use it for

Answer 31

Appliances and machines and they use it for light sound and heat energy and also to work

Question 32

What does an electrochemical cell do

Answer 32

It changes chemicals in a battery and changes them to electricity

Question 33

What is a battery made of

Answer 33

It is made of one or two cells

Question 34

What are the two ends of the battery called

Answer 34

The positive and the negative side

Question 35

What does the battery do in the simple circuit

Answer 35

It is the source of power for the circuit

Question 36

What does the switch do in the simple circuit

Answer 36

It breaks or completes the circuit

Question 37

What does the light bulb do in the simple circuit

Answer 37

It gives off light energy

Question 38

How long does it take for the earth to go around the sun

Answer 38

It takes 365 days

Question 39

Define orbit

Answer 39

The path of one object in space around another