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P4 Science term 2 revision

Total questions: 40

Worksheet time: 31mins

Name
Class
Date
1.

Which of the following is NOT a source of heat?

a)

Boiling water

b)

A candle

c)

Burning charcoal

d)

Heated oven

2.

Which of the following glasses has the least amount of heat in it?

a)
b)
c)
d)
3.

A keyboard was left in an air-conditioned room of temperature 23oC. Jamie touched the keys on the keyboard and the metal casing of the keyboard. His hand felt cooler when he touched the metal casing.


Which of the following best explains why his hand felt cooler when he touched the metal casing?

a)

The keys were hotter than the metal casing

b)

The hands transferred less heat to the metal casing

c)

More heat was transferred from the hands to the metal casing

d)

The metal casing was a poorer conductor of heat than the keys.

4.

Mrs Lim placed a metal spoon in a cup of hot tea.

After a while, the spoon became hotter because the ______

a)

cup lost heat to the hot tea

b)

spoon lost heat to the hot tea

c)

spoon gained heat from the hot tea

d)

spoon gained heat from the surrounding

5.

In which part of the digestive system the food is absorbed into the blood?

a)

gullet

b)

stomach

c)

small intestine

d)

large intestine

6.

Liam saw his reflection on the smooth refrigerator door painted grey. Which of the following statements explain why he is able to see his reflection?

a)

The refrigerator door is a mirror.

b)

He is in a completely dark kitchen.

c)

The refrigerator door gives off light.

d)

The surface of the refrigerator can reflect light.

7.
Mr.  Novales makes a mixture of four solid materials.  Which of these 4 materials will a bar magnet be able to pull out?
a)
Rubber
b)
Sand
c)
Sugar
d)
Iron Fillings
8.
Which part of the Magnet is Strongest?
a)
Center
b)
Sides
c)
Poles
9.
What will happen when these magnets are brought close together?
a)
They will attract each other.
b)
They will repel each other.
c)
Both magnets will turn to the left
d)
Both magnets will turn to the right
10.
Where is the strongest attraction force of the magnet?
a)
at the poles
b)
in the middle
c)
above the magnet
d)
below the magnet
11.
Which object would a magnet attract?
a)
a glass bottle
b)
a piece of paper
c)
a metal paper clip
compass
d)
a rubber eraser
magnetic field
12.
Which of the following is true about a bar magnet?
a)
Its magnetic field is strongest near its center.
b)
It is surrounded by a magnetic field.
c)
The north pole is stronger than the south pole.
d)
The south pole is stronger than the north pole.
13.
Which two metals will be attracted by a magnet?
a)
iron and steel
b)
gold and silver
c)
aluminum and lead
d)
copper and cobalt
14.
Why does food wrapped in aluminum foil keep warm for a long time?
a)
Aluminum foil is an insulator and prevents heat loss by conduction.
b)
Aluminum foil forms an air-tight seal and prevents heat loss by convection.
c)
The silver surface of the foil reflects heat in and prevents heat loss by radiation.
d)
The silver surface of the foil absorbs heat from the surroundings and keeps the food warm.
15.
What happens when ice cubes melt in a glass?
a)
Heat travels from the ice to the warmer water.
b)
No energy is transferred.
c)
Heat is transferred from the warmer water to the ice cubes.
d)
The water warms up due to the humidity
16.
After cooking an egg in boiling water, you cool the egg by putting it into a bowl of cold water.  Which of the following explains the egg's cooling process?
a)
Temperature is transferred from the egg to the water.
b)
Energy is transferred from the water to the egg.
c)
Energy is transferred from the egg to the water.
d)
Cold moves from the water into the egg.
17.
Why do we wear sweaters in cold weather?
a)
To keep cold out.
b)
To generate heat.
c)
To reduce heat loss.
d)
All of the above.
18.
You pick up a can of soda off of the countertop.  The countertop underneath the can feels colder than the rest of the counter.  Which explanation do you think is the best?
a)
The cold has been transferred from the soda to the counter.
b)
There is no heat energy left in the counter beneath the can.
c)
Some heat has been transferred from the counter to the soda.
d)
The heat beneath the can moves away into other parts of the countertop.
19.

__________ give live births, have fur/ hair, and feed milk to their young.

a)

Mammals

b)

Animals

c)

Fungus

d)

Plants

20.

What causes a shadow to change during the day?

a)

a. The sun's position in the sky

b)

b. Where the moon is located during the day

c)

c. When the sun sets

21.

The higher the sun is in the sky, the ________ the shadows are

a)

tall

b)

shorter

c)

darker

22.
When light can easily pass through an object, we say that that object is ___ .
a)
transparent
b)
translucent
c)
opaque
d)
transported
23.
When light partially passed through an object, we say that that object is ____ .
a)
translucent
b)
transparent
c)
opaque
d)
optical
24.
Which object would most likely reflect light?
a)
carpet
b)
paper 
c)
aluminum foil
d)
plastic bag
25.
Which of the following is not a source of light? 
a)
the Moon
b)
a car head lamp
c)
a glow-worm
d)
a star
26.
Which of the following surfaces reflects the most light? 
a)
plastic cards
b)
aluminum foil
c)
ceramic tiles
d)
wood shingles
27.

Materials that let some light rays pass through but scatter some of the other rays are called _______

a)

translucent

b)

transparent

c)

opaque

d)

wood

28.
Water will _________ when it gets cold enough, changing it from a LIQUID to a SOLID
a)
Melt
b)
Freeze
c)
Boil
29.

Heat moves easily through materials called _______

a)

conductors

b)

insulators

30.

When an object is heated, _______

a)

its temperature drop

b)

it gains energy

c)

its particles slow down

31.

Heat always goes from a ____ temperature to a _____ temperature

a)

warm, cold

b)

cold, warm

32.
Which change can occur when  you add heat energy to water?
a)
The water can change from a liquid to a solid
b)
The water can change from a gas to a liquid
c)
The water can change from a liquid to a gas
d)
The water can change from a solid to a liquid
33.
A state of matter that has a definite volume and shape.
a)
solid
b)
liquid
c)
gas
d)
matter
34.
Something that takes up space and has mass.
a)
volume
b)
matter
c)
mass
d)
density
35.
The amount of space something takes up
a)
density
b)
volume
c)
mass
d)
matter
36.
The ability of a metal to allow heat or electricity to pass through it.
a)
conductivity
b)
insulator
c)
mass
d)
density
37.
The molecules in the picture are tightly held together with little movement. They have shape and energy.  Therefore, the picture represents _________.
a)
solid
b)
liquid
c)
gas
d)
plasma
38.
Molecules move quickest in which state of matter
a)
solid
b)
liquid
c)
gas
d)
solid, liquid and gas
39.
When the temperature of matter decreases the particles ...
a)
speed up and move farther apart
b)
speed up and move closer together
c)
slow down and move farther apart
d)
slow down and move closer together
40.

Lucy set up and conducted an experiment as shown.

She wanted to find the amount of light that can pass through the materials. First she used material A. Then she replaced it with material B, followed by material C.

Which one of the following was the independent variable in her experiment?

a)

Amount of light

b)

Type of material

c)

Thickness of material

d)

Distance between material and the torch

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