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Y7 Science Revision

Total questions: 141

Worksheet time: 3hrs 31mins

Name
Class
Date
1.

Forces are...

a)

Amounts of mass

b)

Energy

c)

Pushes and pulls

2.

How do we measure forces?

a)

Metre Stick

b)

Newton Meter

c)

Stopwatch

d)

Measuring cylinder

3.

Forces always come...

a)

singly

b)

in pairs

c)

in triplets

d)

in groups of four

4.

The force shown by the arrow is...

a)

Engine force

b)

Air resistance

c)

Gravity

d)

Weight

e)

Mass

5.

The force in the opposite direction (the blue arrow) is...

a)

Engine force

b)

Reaction from the ground

c)

Weight

d)

Drag

6.

If the yellow arrow force is larger than the purple arrow force...

a)

The car will decelerate if it's moving forwards

b)

The car will keep going at the same speed

c)

The car will reverse if it's stopped to start with

d)

The car will accelerate forwards

7.

If the car is moving forwards, then the yellow arrow force could be...

a)

Drag

b)

Engine force

c)

Weight

d)

Reaction from the ground

8.

The Newton meter (force meter)reading is...

a)

0N

b)

0.1N

c)

1N

d)

10N

9.

There is no force on the Newton meter. This means that...

a)

The Newton meter needs to be calibrated by turning the screw at the top

b)

The Newton meter is working perfectly

c)

The Newton meter is broken and needs to be thrown away

10.

Which are the non-contact forces?

a)

Drag

b)

Magnetic attraction

c)

Gravity

d)

Pushing a block

11.

A contact force is from

a)

objects physically touching

b)

far apart objects

c)

not touching object

d)

always a pull

12.

Which of these is not a contact force?

a)

Air resistance

b)

Gravity

c)

Friction

d)

Upthrust

13.

If the forces acting on an object are balanced, the object will...

a)

remain stationary

b)

move faster

14.

When you rub your hands together, which force is acting?

a)

Skin resistance

b)

Air resistance

c)

Gravity

d)

Friction

15.

Friction produces...

a)

heat

b)

water

c)

noise

d)

light

16.

You can reduce friction by making the surfaces...

a)

smoother

b)

hotter

c)

closer together

d)

harder

17.

Rougher surfaces create __________ friction.

a)

more

b)

less

18.

Which of these scenarios would you expect more friction?

a)
b)
c)
d)
19.

If the amount of friction increased, what would you expect to happen to the amount of heat?

a)

Heat increases

b)

Heat decreases

c)

Heat stays the same

d)

Heat disappears

20.

Friction works in the _____________ direction to the object moving.

a)

same

b)

opposite

21.

Look at the picture,

Select the correct answer to complete the sentence.

The forces shown above are pushing/pulling forces

a)

pulling

b)

pushing

22.

Look at the picture,

Select the correct answer to complete the sentence.

The forces shown are working together / opposite forces.

a)

working together

b)

opposite forces

23.

Look at the picture,

Select the correct answer to complete the sentence.

The forces are equal / not equal.

a)

not equal

b)

equal

24.

Look at the picture,

Select the correct answer to complete the sentence.

The resultant force (overall force) is 1000N to the right / 1000N to the left / zero

a)

1000N to the left

b)

zero

c)

1000N to the right

25.

What do we measure a force in?

a)

Kilograms

b)

Newtons

c)

Miles per hour

d)

Kilometres

26.

Which direction is the force acting?

a)

To the left

b)

To the right

c)

Up

d)

down

27.

Look at the picture, how do you know the direction is the force acting?

a)

The arrow is pointing in the direction

b)

The boy is pushing in the direction

28.

Forces are shown as an arrow. What is the same of this arrow?

a)

Viangle

b)

Tractor

c)

Hector

d)

Vector

29.

What is the biggest force?

a)

Left

b)

Right

30.

How do you know it is the biggest force?

a)

The arrow is smaller

b)

The arrow is bigger

c)

The girl is pulling in that direction

31.

What does a vector (arrow) tell us about the force? (2 correct answers)

a)

How smelly it is

b)

The direction it is

c)

How strong it is

d)

What the force is

32.

A force is either a push or a pull. True or false?

a)

true

b)

false

33.

Look at the image.


The force created by the car's engine and shown by the arrow is _________.

a)

gravity

b)

weight

c)

thrust

d)

upthrust

34.

The speed of an object is a measurement of how _____ the object is moving.

a)

long

b)

fast

c)

far

35.

Look at the image.

The name of the force that makes the apple fall to the ground is ___________.

a)

magnetism

b)

air resistance

c)

gravity

d)

weight

36.

The two cats on the see-saw have the same weight. The forces acting against the pivot of the see-saw are _________.

a)

unbalanced

b)

balanced

37.

Which famous scientist discovered gravity?

a)

Newton

b)

Galileo

c)

Hawking

d)

Einstein

38.

A force can change the . . .

a)

speed, shape or colour of an object.

b)

speed or direction of an object.

c)

speed, direction or shape of an object.

d)

speed or shape of an object.

39.

Which piece of equipment do you use to measure the size of a force?

a)

A

b)

B

c)

C

d)

D

40.

Magnetism is an example of a ______________ force.

a)

contact

b)

non-contact

41.

The car in the image is moving along a flat road. Which of these forces resists the movement of the car?

a)

thrust

b)

air resistance

c)

upthrust

42.

Force A is ___________.

a)

thrust

b)

weight

c)

water resistance

d)

upthrust

43.

Force B is ___________.

a)

thrust

b)

weight

c)

water resistance

d)

upthrust

44.

The arrow in diagram A shows the thrust of the car.

How would you show that the car in diagram B has a smaller force of thrust?

a)

Draw a wider arrow.

b)

Draw a shorter arrow.

c)

Draw a longer arrow.

45.

The resultant force acting on the wooden block is . . .

a)

2 N to the right

b)

10 N to the right

c)

2 N to the left

d)

10 N to the left

46.

The resultant force acting on the trolley is . . .

a)

60 N to the right

b)

90 N to the right.

c)

30 N to the right

d)

90 N to the left.

47.

The resultant force on the block is . . .

a)

50 N to the left.

b)

90 N to the left.

c)

40 N to the right.

d)

40 N to the left.

48.

Which piece of scientific equipment is used to measure force?

a)

newtonmeter

b)

balance

c)

scales

49.
If these boys are pulling with the same amount of force.  What will happen?
a)
The boy in blue will win.
b)
They will not move at all.
c)
The boy in red will win.
d)
Both will fall down.
50.

In which force diagram would the car slow down?

a)

A

b)

B

c)

C

51.
Why is person B having a hard time moving down the hill?
a)
Person B has more friction than person A.
b)
Person B has the same friction as person A.
c)
Person B is out of shape.
d)
Person B has less friction has person A.
52.

What does the mitochondria do?

a)

Controls the cell

b)

Helps with respiration and creates energy

c)

It doesn't do anything

d)

Helps maintain the cell's shape

53.

What does the nucleus do?

a)

It helps with the cell's respiration

b)

It controls the cells activities

c)

It controls what goes in and out of the cell

d)

It helps with photosynthesis

54.

Approximately how many cells are in the human body?

a)

30 million

b)

40 million

c)

60 trillion

d)

30 trillion

55.

Who named 'cells'?

a)

Captain Hook

b)

Albert Einstein

c)

Robert Hooke

d)

Michelangelo

56.

What is the gelly like substace in a cell?

a)

Cytoplasm

b)

Nucleus

c)

Cellulose

d)

Mitochondria

57.

Why do cells have a cell membrane?

a)

Because it helps to maintain the shape

b)

It controls what goes in and out of a cell

c)

It controls the cell's activities

d)

It contains the cell's DNA

58.

Which one is smaller?

a)

Animal cell

b)

Plant cell

c)

Yeast cell

d)

Bacterial cell

59.

What do plant cells have that aimal cells do not

a)

Cytoplasm

b)

Nucleus

c)

Chloroplasts

d)

Cell membrane

60.

Which one of these do not have a nucleus?

a)

Animal cell

b)

Red blood cell

c)

White blood cell

d)

Plant cell

61.

Why did Robert Hooke name 'cells' this way?

a)

They look like prison cells

b)

They just look like they should be called 'cells'

c)

The letters 'C,E,L,L' stand for something

62.

True or False:


Unicellular organisms are made up of more than one cell.

a)

true

b)

false

63.

Give an example of a unicellular organism.

a)

bacteria

b)

yeast

c)

animal cell

d)

plant cell

64.

Which piece of scientific equipment is used to observe cells?

a)

telescope

b)

microscope

c)

magnifying glass

d)

thermometer

65.

Which scientific word is used to describe a group of cells of the same type working together to perform a particular function?

a)

cells

b)

tissue

c)

organ

d)

organ system

66.

Complete:

Tissues of different types that work together to perform one main function is known as an _____.

a)

cells

b)

tissue

c)

organ

d)

organ system

67.

Complete:

Groups of organs can work together to form an _____.

a)

cells

b)

tissues

c)

organ

d)

organ system

68.

Name 3 structures that nearly all living cells posses.

a)

cell membrane

b)

vacuole

c)

cytoplasm

d)

cell wall

e)

nucleus

69.

True or False


Bacterial cells posses a nucleus?

a)

true

b)

false

70.

Name 2 structures found in a plant cell but not in an animal cell.

a)

cell membrane

b)

vacuole

c)

chloroplast

d)

cytoplasm

e)

cell wall

71.

Is the heart a cell, tissue or organ?

a)

cell

b)

tissue

c)

organ

72.

Which cell structure controls cell activities?

a)

nucleus

b)

cytoplasm

c)

cell membrane

73.

In which part of a cell do most chemical reactions occur?

a)

nucleus

b)

cytoplasm

c)

mitochondria

d)

cell membrane

74.

Which cell structure controls the movement of substances into and out of the cell?

a)

cell membrane

b)

cell wall

c)

nucleus

d)

cytoplasm

75.

True or False:


The cell membrane provides support and gives the cell its shape.

a)

true

b)

false

76.

True or False:


The vacuole of a cell is full of watery sap that stores minerals.

a)

true

b)

false

77.

True or False:

Some substances pass through a cell membrane by diffusion.

a)

true

b)

false

78.

True or False:


Diffusion is when particles move from a high concentration to a low concentration

a)

true

b)

false

79.

What is this?

a)

cytoplasm

b)

nucleus

c)

vacuole

d)

cell membrane

80.

What type of cell is this?

a)

amoeba

b)

animal cell

c)

bacteria

d)

plant cell

81.

What is the function of a nerve cell?

a)

The site where respiration occurs

b)

To transmit electrical impulses around the body

c)

To absorb water

82.

What is this?

a)

cell wall

b)

cytoplasm

c)

vacuole

d)

chloroplast

83.

What is this?

a)

cell wall

b)

chloroplast

c)

cell membrane

d)

vacuole

84.
Which organelle belongs in plant cells only?
a)
Cell Membrane
b)
Mitochondrion
c)
Chloroplast
d)
Nucleus
85.
Which organelle belongs in plant cells only?
a)
Cytoplasm
b)
Mitochondrion
c)
Cell Wall
d)
Nucleus
86.

Which organelle belongs in plant cells only?

a)

Cytoplasm

b)

Mitochondrion

c)

Large Permanent Vacuole

d)

Cell Membrane

87.
Which organelle belongs in both plant and animal cells?
a)
Cytoplasm
b)
Chloroplast
c)
Large Central Vacuole
d)
Cell Wall
88.
Which organelle belongs in both plant and animal cells?
a)
Chloroplast
b)
Mitochondrion
c)
Large Central Vacuole
d)
Cell Wall
89.
Which organelle belongs in both plant and animal cells?
a)
Chloroplast
b)
Cell Wall
c)
Large Central Vacuole
d)
Cell Membrane
90.
Which organelle belongs in both plant and animal cells?
a)
Chloroplast
b)
Cell Wall
c)
Large Central Vacuole
d)

Nucleus

91.
A rigid layer that lies outside the cell's  membrane is...
a)
Cytoskeleton
b)
Cilia
c)
Cell Wall
d)
Flagella
92.
What is the job of mitochondria in a cell.
a)
make ribosomes
b)
control the cell
c)

produce ATP (energy)

d)
make protien
93.
Tiny cell structures that carry out specific functions within the cell.
a)
membranes
b)
nucleus
c)
organelles
d)
animalicules
94.
What part of the plant cell represents the cytoplasm?
a)
2
b)
3
c)
6
d)
5
95.
Which part of the diagram controls all cellular activities?
a)
2
b)
3
c)
1
d)
4
96.

What part of the animal cell represents the cell membrane?

a)

5

b)

1

c)

2

d)

4

97.

What part of the plant cell represents the cell wall?

a)

5

b)

3

c)

6

d)

4

98.
Which part on the diagram decides what goes in and out of the cell?
a)
1
b)
2
c)
3
d)
4
99.

Solids have...

a)

a fixed shape and a fixed volume

b)

a fixed shape but can change volume

c)

No fixed shape but a fixed volume

d)

no fixed shape or volume

100.

The piece of equipment used to measure the mass of a substance or object is a ______________.

a)

balance/scales

b)

measuring cylinder

c)

ruler

d)

thermometer

101.
Put the liquids in order from most dense to least dense?
a)
4, 3, 2, 1
b)
1, 2, 3, 4
c)
3, 4, 2, 1, 
d)
4, 3, 1, 2
102.

Which state of matter can be compressed easily?

a)

solid

b)

liquid

c)

gas

d)

all of them

103.

Silver

Melting point 961oC boiling point 2210oC

What state of matter will it be at 959oC?

a)

Solid

b)

Liquid

c)

Gas

104.

Which TWO things will not increase the pressure of a gas?

a)

adding more particles

b)

cooling particles

c)

heating the particles up

d)

Making a stretchy container

105.

The melting point of gold is 1063 oC. What process happens to gold when liquid gold changes state to solid gold?

a)

Evaporation

b)

Melting

c)

Freezing

d)

Condensation

106.
What am I? I have a fixed mass, a fixed volume, I cannot be squashed and I have a shape that changes to fit the bottom of my container?
a)
solid
b)
liquid
c)
gas
d)
plasma
107.

If a substance had a melting point of -12⁰C and a boiling point of 200⁰C what state would it be in at room temperature (around 20oC)?

a)

Solid

b)

Liquid

c)

Gas

108.

For what reason do liquids flow so easily?

Because the particles.....

a)

are so tightly compacted to one another.

b)

can slide past one another.

c)

vibrate with one another.

d)

are so far apart from one another.

109.

Why does the liquid inside a thermometer rise?


When the thermometer heats up, the liquid inside ...... because the particles move about ........

a)

expands, less quickly

b)

expands, more quickly

c)

contracts, less quickly

d)

contracts, more quickly

110.

When particles move from areas of high concentration to areas less concentrated, this has taken place.

a)

diffusion

b)

expansion

c)

contraction

d)

condensation

111.

At higher temperatures, the particles of a liquid

a)

diffuse more slowly

b)

diffuse more quickly

c)

spread out more

d)

continue to move at the same speed

e)

condense more

112.
The smallest piece of anything that still has the properties of that thing is called
a)
an element.
b)
a particle.
c)
a substance.
d)
a gas.
113.
What is between air particles?
a)
Particles of oxygen
b)
Particles of nitrogen
c)
Nothing
d)
Other elements
114.
Air particles inside a closed object are
a)
compressed so that the particles bond to each other.
b)
vibrating rapidly until they break the bonds holding them to other particles.
c)
constantly moving and bumping into other particles and the object.
d)
perfectly still because they have enough room.
115.
Matter changes state when...
a)
energy is added or removed
b)
energy is added
c)
energy is removed
d)
there is no energy
116.
Temperature at which a solid state changes to a liquid state
a)
boiling point
b)
melting point
c)
freezing point
d)
absolute zero
117.
The change of state from a gas to a liquid
a)

Condensation

b)

Freezing

c)

Eevaporation

d)

Melting

118.
As molecules gain energy, they move _____ and spread apart, and vise versa.
a)
faster
b)
slower
c)
less
d)
inside
119.

When a solid (a)   it becomes a liquid

120.
If you want to change liquid water into a gas you must:
a)
remove heat from the water
b)
apply pressure to the water
c)
add heat to the water
d)
add chemicals to the water
121.

What happens to the liquid particles when they lose energy...

a)

The particles move faster

b)

The particles get further apart

c)

The particles get closer together

d)

The particles stop moving

122.
What happens to a substance when it changes from a liquid to a solid?
a)
it gains mass
b)
it gains energy
c)
it loses mass
d)
it loses energy
123.

Which state of matter does this picture show?

a)

Solid

b)

Liquid

c)

Gas

124.
Rank these in order from least dense to most dense.
a)
Solid, Liquid, Gas
b)
Liquid, Gas, Solid
c)
Gas, Solid, Liquid
d)
Gas, Liquid, Solid
125.

What state of matter?

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma!!!

126.

What state of matter?

a)

Solid

b)

Liquid

c)

Gas

127.

Which of the following describes the particle arrangement of a solid?

a)

Particles are all touching, and are in a random pattern.

b)

Particles are all touching, and are in a neat pattern.

c)

Particles are not touching, and are in a neat pattern.

d)

Particles are not touching, and are in a random pattern.

128.

Which of the following describes the particle arrangement of a liquid?

a)

Particles are all touching, and are in a random pattern.

b)

Particles are all touching, and are in a neat pattern.

c)

Particles are not touching, and are in a neat pattern.

d)

Particles are not touching, and are in a random pattern.

129.

Which of the following describes the particle arrangement of a gas?

a)

Particles are all touching, and are in a random pattern.

b)

Particles are all touching, and are in a neat pattern.

c)

Particles are not touching, and are in a neat pattern.

d)

Particles are not touching, and are in a random pattern.

130.

Which of the following explains why solids cannot be compressed?

a)

The particles can be squashed.

b)

The particles cannot move around.

c)

There is air between the particles.

d)

The particles are all in contact.

131.

Which of the following explains why gases can be compressed?

a)

The particles are spread out.

b)

The particles have air between them.

c)

The particles can be squashed.

d)

The particles move around randomly.

132.

Which of the answers explains why liquids flow?

a)

The particles are all touching.

b)

The particles can move around each other.

c)

The particles can be squashed.

d)

The particles can are in fixed positions.

133.

What happens when a substance is cooled?

a)

It expands

b)

It contracts

c)

The particles get bigger

d)

The particles get smaller

134.

Why does a solid object expand when it is heated?

a)

The particles get bigger.

b)

The particles vibrate more.

c)

The particles push each other apart.

d)

The particles are fixed in position.

135.

What is density?

a)

density = massvolumedensity\ =\ \frac{mass}{volume}

b)

The amount of matter an object is made from.

c)

The amount of space an object takes up.

d)

A measure of how closely packed the particles are.

136.

Which of the following methods will increase the pressure in a gas?

a)

Adding more particles.

b)

Cooling the gas.

c)

Making the volume bigger.

d)

Heating the gas.

137.

What is the name of the change from solid to liquid?

a)

melting

b)

boiling

c)

condensing

d)

freezing

138.

What is the name of the change from liquid to gas?

a)

melting

b)

boiling

c)

condensing

d)

freezing

139.

What is the name of the change from liquid to solid?

a)

melting

b)

boiling

c)

condensing

d)

freezing

140.

What is the name of the change from gas to liquid?

a)

melting

b)

boiling

c)

condensing

d)

freezing

141.

What is the name of the process by which the particles in a gas or liquid spread out from an area of high concentration to an area of low concentration?

a)

Melting

b)

Diffusion

c)

Expansion

d)

Density

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