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Worksheets

Revision June year 7

Total questions: 197

Worksheet time: 2hrs 16mins

Name
Class
Date
1.
Which best describes what a food chain shows you?
a)
Energy flow through an ecosystem
b)
Food flowing through an ecosystem
c)
Consumers going into other consumers
d)
Who eats who
2.
What are plants called in a food chain?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Scavengers
3.
What are animals called in a food chain?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Plants
4.
What are the organisms that break down dead stuff?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Organisms
5.
Where does the energy start in this food chain?
a)
Plant
b)
Sun
c)
Deer
d)
Wolf
6.
What is the role of a producer?
a)
Use sunlight to make food
b)
Gain energy from eating other organisms
c)
Keep other species from overpopulating
d)
Breaking down dead stuff 
7.
What's the role of consumers in a food chain?
a)
Use sunlight to make food 
b)
Eat other species and keep them from overpopulating
c)
Break down dead stuff
d)
Add nutrients to the soil
8.
What is the role of decomposers in a food chain?
a)
Use sunlight to make food
b)
Eat other organisms to gain energy
c)
Make the food for the whole food chain
d)
Break down dead organisms and add nutrients to the soil
9.
Which of these organisms would receive energy from the snake?
a)
Plant
b)
Rabbit
c)
Mouse
d)
Hawk
10.
Which type of consumer eats plants only?
a)
Herbivores
b)
Omnivores
c)
Carnivores
d)
Scavengers
11.
Which type of consumer eats meat only?
a)
Producers
b)
Herbivores
c)
Carnivores
d)
Omnivores
12.
Which type of consumer eats meat and plants?
a)
Herbivores
b)
Carnivores
c)
Omnivores
d)
Plants
13.
Which type of consumer is always a first consumer?
a)
Herbivore
b)
Omnivore
c)
Carnivore
d)
Producer
14.
Which type of consumer could be a first or second consumer?
a)
Herbivore
b)
Omnivore
c)
Carnivore
d)
Producer
15.
Which is the correct food chain order?
a)
Plant-->1st Consumer--> 2nd Consumer 
b)
Plant <-- 1st Consumer <-- 2nd Consumer
c)
2nd consumer     --> 1st consumer  --> Plant
d)
1st Consumer      --> 2nd consumer --> Plant
16.
Which of the following is a producer?
a)
Maple tree
b)
Sunfish
c)
Bunny
d)
Bear
17.
Which of these is a decomposer?
a)
Fungi
b)
Hawk
c)
Dog
d)
Grass
18.
True/False
Food webs show you everything an animal eats. Food chains show you one thing.
a)
True
b)
False
19.
Which of these is true about this food web?
a)
The Owl gets its energy from the producer.
b)
The Lion gets its energy only from a wild cat.
c)
The Kite gets its energy from the goat.
d)
The Mouse is most likely to die, several ways.
20.

when drawing a food chain, do we ever start it with the sun?

a)

Yes

b)

No

c)

Sometimes

d)

Only if it is day time

21.

What do lizards eat?

a)

mice

b)

grasshoppers

c)

hawks

d)

grass

22.

What might happen if all the rabbits died?

a)

There would be more hawks because there are fewer rabbits in competition with them.

b)

There would be fewer lizards because the hawks would eat more of them.

c)

There would be less grass because the grasshoppers would eat it.

d)

There would be more snakes because they would not compete with the rabbits.

23.

The arrows in a food chain show:

a)

the flow of energy

b)

the loss of energy

c)

how animals use energy to move around in a habitat

d)

how plants make their own energy.

24.

Using the food web, choose the organisms in the correct order.

a)

microscopic plants > water fleas > small fish > perch

b)

microscope plants > perch > water flease > small fish

c)

perch > waterboatmen > small fish > tadpoles

d)

microscopic plants > tadpoles > water boatman > perch

25.

What word describes the movement of many animals from one part of the world to another?

a)

hibernation

b)

changing

c)

tourism

d)

migration

26.
What is a producer? 
a)
Organism that creates their own food.
b)
Organism that eat other organisms for energy
c)
Organism that eat other dead organisms
27.
What is a consumer? 
a)
Organism that creates their own food.
b)
Organism that eat other organisms for energy
c)
Organism that eat other dead organisms
28.
What is a decomposer? 
a)
Organism that creates their own food.
b)
Organism that eat other organisms for energy
c)
Organism that eat other dead organisms
29.
What do Omnivores eat? 
a)
Plants ONLY 
b)
Animals ONLY
c)
Plants AND Animals
30.
What do Herbivores eat? 
a)
Plants ONLY 
b)
Animals ONLY
c)
Plants AND Animals
31.
What do Carnivores eat? 
a)
Plants ONLY 
b)
Animals ONLY
c)
Plants AND Animals
32.
What animal is on the top of the food chain? 
*Remember Humans are on the top of all food chains because we do not get hunted. 
a)
Grass
b)
Grasshopper
c)
Mouse
d)
Owl
33.
Who does the owl get energy from? 
a)
Grass
b)
Grasshopper
c)
Mouse
d)
Ow
34.
Who is the producer in this food chain? 
a)
Grass
b)
Grasshopper
c)
Mouse
d)
Ow
35.
Who does the grasshopper get energy from? 
a)
Grass
b)
Grasshopper
c)
Mouse
d)
Ow
36.
The way energy is passed from one organism to another
a)
food chain
b)
energy
c)
extinct
d)
habitat
37.
What is this called?
a)
Food Web
b)
Food Chain
c)
Abiotic Factors
38.

Which of these organisms could not be easily counted in a quadrat?

a)

Sparrows

b)

Snails

c)

Moss

d)

Daisies

39.

True or false? Sampling often saves time and money.

a)

True

b)

False

40.

Which is the correct definition of sampling?

a)

Looking at a section of a population to make an estimate.

b)

A measure of the number of different species in a habitat.

c)

All the members of a single species that live in a habitat.

d)

Numbers used to indicate the position of a point

41.

Which organisms would you sample in a sweep net?

a)

Butterflies

b)

Ants

c)

Moss

d)

Woodlice

42.

Which organisms would you sample using a pooter?

a)

Earthworms

b)

Ladybirds

c)

Lichen

d)

Butterflies

43.

If there were 26 daisies in 10% of the school field, what would be the estimate for the entire population?

a)

26

b)

10

c)

90

d)

260

44.

What is the imaginary line in systematic sampling called?

a)

Transect

b)

Quadrat

c)

Coordinate

45.

What does biodiversity mean?

a)

Numbers used to indicate the position of a point

b)

A measure of the range of living organisms within an area

c)

All the members of a single species that live in a habitat

d)

The place where an organism lives

46.

Where would kick sampling be used?

a)

In a field

b)

In a river or stream

c)

On a hill

d)

In a tree

47.

Which piece of equipment would be best to sample dormice?

a)

Pitfall trap

b)

Pooter jar

c)

Quadrat

d)

Sweep net

48.
Unbiased sampling is:
a)
when you choose the group you think will represent the sample
b)
when any member of the population is equally likely to be chosen for the sample
49.

What is a suitable way to sample plants in a field?

a)

Counting Random Plants

b)

Using Quadrats

c)

Using Pooters

d)

Using Pitfall traps

50.

What is a quadrat

a)

A type of bike

b)

A sampling tool typically of one square metre, used to sample plants

c)

A sampling tool typically of one square metre, used to sample animals

d)

A type of hat

51.

Which of the following is true about quadrats?

a)

quadrats should be placed randomly so that a representative sample is taken

b)

you should look at the results from several quadrats in an area to reduce the effect of an unusual distribution

c)

the results are more reliable when you look at the results from many quadrats

d)

All the above are true

52.

What is the best way to place a quadrat?

a)

Place it where you like

b)

Divide the sample area into a grid and use a random number generator to choose a square.

c)

Throw the quadrat so it's random

d)

Divide the sample area into a grid and choose a square.

53.

responsible for developing the classification system we use today (taxonomy). He also developed classification hierarchy.

a)

Isaac Newton

b)

Albert Einstein

c)

Carolus Linnaeus

d)

Bill Nye the Science Guy

54.

Why do we classify things?

a)

Grouping things helps us to understand them better

b)

all the cool people do it

c)

because we're better than every other organism

d)

why not?

55.

If you divide something in half (have a left and right side), the

sides are “mirror images.” (Most animals have this)

a)

dichotomous

b)

bilateral symmetry

c)

diversity

d)

radial symmetry

56.

An organism is.......

a)

a person who plays the organ

b)

a part of speech

c)

a dichotomous

d)

any living thing

57.

A device used to identify what group an organism or object is in. Most use a two choice system where you answer yes or no to each question to arrive at the correct group.

a)

compass

b)

dichotomous key

c)

map

d)

microscope

58.

The largest of the classification groupings. Currently scientists have identified five.

a)

kingdom

b)

species

c)

phylum

d)

genus

59.

When something can be divided into two identical halves when divided at any angle.

a)

refraction

b)

bilateral symmetry

c)

reflection

d)

radial symmetry

60.

The smallest of the classification groupings. Any group of organisms that share common genetic information. Members are capable of breeding and producing offspring that can also reproduce.

a)

order

b)

phylum

c)

species

d)

kingdom

61.

Which of these is NOT one of the 5 Kingdoms?

a)

Fungi

b)

Plantae

c)

Linnaeus

d)

Animal

e)

Monera

62.

Which of these in the correct order, from LARGEST to smallest?

a)

Kingdom, Phylum, Class, Order, Family, Genus, Species

b)

Species, Family, Order, Genus, Class, Kingdom, Phylum

c)

Kingdom, Phylum, Order, Genus, Species, Family, Class

d)

Species, Family, Class, Kingdom, Phylum, Order, Genus

63.
What is the net force?
a)
20 N 
b)
0 N 
c)
400 N 
d)
40 N 
64.

What is the unit to MEASURE force?

a)

Kilogram

b)

Meter

c)

Pounds

d)

Newton

65.
What is the net force?
a)
10 N
b)
0 N
c)
25 N
d)
1 N
66.
If these teams 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.
67.
Balanced or unbalanced?
a)
balanced
b)
unbalanced
68.

Forces that have a net force of zero Newtons

a)

Balanced force

b)

Unbalanced force

69.
What will cause an object to move?
a)
Applied forces
b)
Balanced forces
c)
Unbalanced forces
70.
A push or pull that causes a change in motion
a)
Friction
b)
Gravity
c)
Force
d)
Mass
71.
Calculate the Net Force. 
a)
60N, Left 
b)
40N, Right 
c)
0N
d)
60N, Right
72.
You and your dad are moving the couch from one side to another. Your dad pushes with a force of 35 N to the right and you push with a force of 25 N right. What is the net force on the couch?
a)
60 N right
b)
10 N left
c)
60 n right
d)
50 N left
73.
What force holds the planets in motion around the sun?
a)
Magnetic
b)
Electrical
c)
Gravitational
d)
Air Resistance
74.
What force brings the pencil down?
a)
Applied
b)
Magnetic
c)
Normal
d)
Gravitational
75.
What force ultimately slows the roller coaster to a stop?
a)
Applied
b)
Normal
c)
Friction
d)
Magnetic
76.
Jupiter has about 317 times more mass than Earth. What can you infer from this fact? 
a)
That Jupiter’s gravitational force is much weaker than on Earth’s gravitational force.
b)
That Jupiter’s gravitational force is much stronger than Earth’s gravitational force.
c)
That Jupiter’s and Earth’s gravitational forces are equal.
d)
Mass has no effect on the gravitational force between two objects
77.
This type of force resist motion between two surfaces that are pressed together
a)
contact
b)
gravity
c)
friction
78.
What is it called when the force of gravity is acting on an object?
a)
Weight
b)
Sliding Friction
c)
Momentum
d)
Projectile Motion
79.

Which two of these forces act on parachutes?

a)

Air Resistance

b)

Gravity

c)

Thrust

d)

Kinetic Energy

80.

Another name for air resistance is...

a)

Buoyancy

b)

Streamline

c)

Gravity

d)

Drag

81.

What causes an object to fall faster?

a)

Smaller surface area

b)

Larger surface area

c)

If it has a parachute

d)

If it is softer

82.

The larger the surface area of the moving object, the ___________ air resistance there is.

a)

Less

b)

More

c)

Longer

d)

Quicker

83.

The larger the parachute the ____________

a)

Less air resistance

b)

More surface tension

c)

Less drag

d)

More drag

84.

The more streamlined an object is, the...

a)

More air resistance

b)

Less air resistance

c)

Slower air resistance

d)

Faster air resistance

85.

When dropped from the same distance, which will fall to the floor faster?

a)
b)
86.

What is a parachute designed to maximize?

a)

Gravity

b)

Air Pressure

c)

Air Resistance

d)

Thrust

87.

Complete the sentence.

It is not the difference in gravity that causes objects to fall at different speeds, it’s the difference in the amount of__________________.

a)

Gravity

b)

Mass

c)

Air resistance

88.
The unit of force is
a)
m/s
b)
m/s^2
c)
newton
d)
kg
89.

What is the name of the units that we measure force in?

a)

Einsteins

b)

Newtons

c)

Kilograms

d)

Metres

90.

What is the value of the resultant force?

a)
10 N
b)
0 N
c)
25 N
d)
1 N
91.
Balanced or unbalanced?
a)
balanced
b)
unbalanced
92.
When forces are ___________ the object will move.
a)
unbalanced
b)
balanced
c)
light
d)
gravity
93.

A type of friction that occurs when air pushes against a moving object

a)

surface area

b)

air resistance

c)

velocity

d)

gravity

94.

Streamlining is all about trying to produce a shape that produces the smallest amount of resistance

a)

False

b)

True

95.

How does streamlining affect speed?

a)

more streamlining decreases speed

b)

more streamlining increases speed

96.

This car would have ....

a)

Poor streamlining

b)

Good streamlining

97.

Friction can be reduced by:

a)

providing wheels

b)

lubricating

c)

streamlining

d)

All of these

98.

Which of the following is contact force

a)

magnetic force

b)

electrostatic force

c)

gravitational force

d)

none of these

99.

A force between two objects that are TOUCHING is a

a)

Non-contact Force

b)

Contact Force

c)

Gravitational Force

d)

Jedi Force

100.

A force that acts between objects that are electrically charged is a(n)

a)

Magnetic Force

b)

Electric Force

c)

Gravitational Force

d)

Frictional Force

101.

Which of these is not a contact force?

a)

Air resistance

b)

Gravity

c)

Friction

d)

Upthrust

102.

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

a)

remain stationary

b)

move faster

103.

You can reduce friction by making the surfaces...

a)

smoother

b)

hotter

c)

closer together

d)

harder

104.

Friction works in the _____________ direction to the object moving.

a)

same

b)

opposite

105.
How will this object move? 
a)
It won't move. 
b)
It will move to the right. 
c)
It will move to the left. 
d)
It will move up. 
106.

Complete the sentence - A compressed spring stores ..........................................

a)

elastic potential energy

b)

gravitational potential energy

c)

kinetic energy

d)

electrostatic energy

107.

What is the best description of the relationship shown in this graph?

a)

Linear

b)

non-linear.

c)

directly proportional.

d)

There is no relationship between force and extension.

108.

Which statement most accurately represents Hooke's Law?

a)

a) The stretch of a spring is directly proportional to the force applied.

b)

b) The stretch of a spring is proportional to the number of coils.

c)

c) The stretch of a spring is inversely proportional to the force applied.

d)

d) Thickness of a spring wire is proportional to the force applied.

109.

An unstretched spring becomes longer when a force is applied to it. Which word describes the additional length of the spring gains?

a)

Expansion

b)

Extension

c)

Stretched

110.

When you increase your depth under water, the water pressure on your body

a)

increases

b)

decreases

c)

stays the same

111.

Diagram shows the design of a dam. Why does the thickness of the dam increase with its depth?

a)

The design of this structure is stronger.

b)

Water pressure increases with depth.

c)

The cost of construction is lower.

d)

Water pressure acts uniformly in all directions.

112.
What is the equation used to calculate pressure?
a)
pressure= force/mass
b)
pressure =mass/volume
c)
pressure=area/force
d)
pressure=force/area
113.
Look at the pressure triangle. How do we calculate the area?
a)
f ÷ a
b)
f x p
c)
p x f
d)
f ÷ p
114.
Which of these animals would probably cause the greatest pressure on the ground?
a)
A fat cow with big feet
b)
A fat cow with small feet
c)
 A calf with big feet
d)
A calf with small feet
115.

Amira puts two books on a table as shown in the diagram. The books are the same size and mass. Which book exerts greater pressure on the table?

a)

A

b)

B

116.

Will air pressure be higher on top of a mountain or on the beach?

a)

beach

b)

mountain

c)

It's always the same

117.

The higher the temperature, the .................................. the movement of air particles.

a)

slower

b)

faster

c)

neither

d)

same

118.
The amount of force pushing on an area is the definition of....
a)
Fluid
b)
Viscosity
c)
Barometer
d)
Pressure
119.
Look at the pressure triangle. How do we calculate the force?
a)
f ÷ a
b)
f x p
c)
p x a
d)
f ÷ p
120.
Pressure is equal to force divided by what
a)
area
b)
mass
c)
time
d)
distance
121.

Which word best describes the force from a liquid acting on a floating object?

a)

Weight

b)

Upthrust

c)

Water resistance

d)

Friction

122.

When an object is floating in water, the object's weight and the upthrust of the water are ________ .

a)

balanced

b)

unbalanced

c)

zero

d)

dependent on other things

123.

What happens if the weight of an object is equal to or less than the upthrust?

a)

It floats

b)

It sinks

c)

It spins

d)

It explodes!

124.

What happens if the weight of an object is greater than the upthrust?

a)

it floats

b)

it sinks

c)

it bounces

d)

it vibrates

125.

Diagram shows an investigation conducted by Mazni. How much is the buoyant force exerted on the object when it was in the water?

a)

1.07 N

b)

0.28 N

c)

0.27 N

d)

1.68 N

126.

What is extension?

a)

A measure of how stiff or strong a spring is.

b)

The increase in the length of something.

c)

When an object springs back to its original shape.

127.

What is the control centre of the cell called?

a)

Nucleus

b)

Cell membrane

c)

Cytoplasm

d)

Mitochondria

128.

What is the role of the cell membrane?

a)

Site of respiration

b)

Is the control centre of the cell.

c)

Allows substances to enter and leave the cell.

d)

Gives the cell structural support.

129.

What is jelly like substance where cell reactions take place?

a)

mitochondria

b)

cell membrane

c)

cytoplasm

d)

vacuole

130.

Which cell organelles are ONLY found in PLANT cells.

a)

nucleus, cytoplasm, cell membrane

b)

cell membrane, chloroplasts, large vacuole

c)

cell wall, mitochondria, large vacuole.

d)

cell wall, chloroplasts, large vacuole.

131.

What is chlorophyll?

a)

It is another name for the chloroplast.

b)

The green pigment found in chloroplasts that absorbs light.

c)

The green pigment found in mitochondria that absorbs light.

d)

A pathogen

132.

What type of cell is this?

a)

Animal cell

b)

Plant Cell

133.

Which letter on the diagram represents the nucleus?

a)

C

b)

D

c)

E

d)

F

134.

Which letter shows the site of photosynthesis?

a)

B

b)

C

c)

D

d)

F

135.

Which letters represent organelles found in both plant AND animal cells?

a)

A, E, F

b)

B, E, F

c)

B, F, D

d)

A, C, D

136.

Which letter represents the cytoplasm?

a)

E

b)

F

c)

G

d)

D

137.

What is the name of this part?

a)

base

b)

leg

c)

arm

d)

eyepiece

138.

What is the name of this part?

a)

base

b)

leg

c)

arm

d)

eyepiece

139.

What is the name of this part?

a)

stageclips

b)

leg

c)

body tube

d)

coarse adjustment knob

140.

What is the name of this part?

a)

objective lens

b)

eyepiece/ocular lens

c)

diaphragm

d)

slide

141.

What is the name of this part?

a)

fine adjustment knob

b)

eyepiece/ocular lens

c)

stage

d)

body tube

142.

What is the name of this part?

a)

lamp

b)

eyepiece/ocular lens

c)

leg

d)

objective lens

143.

What is the name of this part?

a)

arm

b)

eyepiece/ocular lens

c)

nosepiece

d)

objective lens

144.

What is the name of this part?

a)

stageclips

b)

stage

c)

nosepiece

d)

slide

145.

What is the name of this part?

a)

stageclips

b)

stage

c)

nosepiece

d)

slide

146.
A microscope is an instrument that.
a)
makes faraway objects look closer.
b)
makes small objects appear larger.
c)
decreases the size of small objects.
d)
increases the size of small objects.
147.

____________________________________: magnifies the image by 10x. This is where you put your eyes.

a)

eye piece

b)

stage

c)

fine adjustment knob

d)

objective lens

e)

slide clip

148.

____________________________________: Three separate lenses to magnify the image (4X, 10X, and 40X). The one in use is the one above the object being viewed.

a)

objective lens

b)

eye piece

c)

stage

d)

slide clip

e)

coarse adjustment knob

149.
What is the smallest unit that can carry on all functions of life?
a)
cells 
b)
elements
c)
atoms
d)
organelles
150.
Which statement would help determine if a cell is a plant or animal cell?
a)
If the cell has a cell wall, it can be an animal cell.
b)
If the cell has a nucleus, then it can only be an animal cell. 
c)
If the cell has a cell wall, it can be a plant cell.
d)
If the cell has a nucleus, then it can only be a plant cell.
151.

What do animal and plant cells have in common?

a)

Both have central vacuoles,cytoplasm and nucleus.

b)

Both have chloroplasts,cytoplasm and nucleus.

c)

Both have cell membranes, cytoplasm and nucleus.

d)

Both have cell walls, cytoplasm and nucleus.

152.
What structures distinguish a plant cell from an animal cell?
a)
Plant cells have cell walls and ribosomes.
b)
Plant cells have cell walls and chloroplasts.
c)
Plant cells have chloroplasts and ribosomes.
d)
Plant cells have chloroplasts and mitochondria.
153.

What is the name of the green subtance that capture light in plant cell?

a)

Nucleus

b)

Chlorophyll

c)

Membrane

d)

Organelles

154.

A group of cells forms...

a)

Multicellular organism

b)

Organs

c)

Systems

d)

Tissues

155.

A very easy one... check the true statement. look at the picture and put in order

a)

Cell, tissue, organ, organ system,organism

b)

Cell, organ, system, organism, organ system

c)

Cell, tissue, organism, organ, system

d)

Cell, tissue, organism, system, organ

156.

Letter B is which organelle?

a)

Nucleus

b)

Cytoplasm

c)

Vacuole

d)

Mitochondria

157.

Reorder the following (smallest to biggest)

a)

Cell

b)

Tissue

c)

Organ

d)

Organ System

e)

Organism

1)
2)
3)
4)
5)
158.

What organelles are in plant cells only (tick all correct answers)

a)

Cell Wall

b)

Cell Membrane

c)

Nucleus

d)

Permanent Vacuole

e)

Chloroplasts

159.

Match the following

a)
1.

Sperm Cell

b)
2.

Muscle Cell

c)
3.

Root Hair Cell

d)
4.

Palisade Cell

e)
5.

Ciliated Cell

160.

Match the following cells to their adaptations

a)
1.

Has a streamlined shape

b)
2.

Contains lots of mitochondria for contracting

c)
3.

Has a large surface area

d)
4.

Contains lots of chloroplasts

e)
5.

Has hairs for moving mucus

161.

Match the following cells to their functions

a)
1.

Swims towards an egg cell

b)
2.

Contracts to move

c)
3.

Absorbs nutrients and water

d)
4.

Carries out photosynthesis

e)
5.

Removes mucus from airways

162.
Matter that has its own shape and takes up space.
a)
solid
b)
liquid
c)
gas
163.
Matter that always fills the shape in a container, such as air.
a)
solid
b)
liquid
c)
gas
164.
Molecules are closest together in a 
a)
Solid
b)
Liquid
c)
Gas
d)
plasma
165.
What term describes a liquid changing to a solid?
a)
Deposition
b)
Sublimation
c)
Evaporation
d)
Freezing
166.
At higher temperatures
a)
particles in an object have less energy
b)
particles in an object move faster
c)
a gas contracts
167.
A gas
a)
has a definite shape but no definite volume
b)
has a definite volume but no definite shape
c)
has fast-moving particles
168.
Boiling
a)
liquid to gas
b)
gas to solid
c)
gas to liquid
d)
solid to liquid
169.

___________ is anything that has mass and takes up space.

a)

Molecules

b)

Matter

c)

Volume

170.

________ is the amount of space an object takes up.

a)

Mass

b)

Matter

c)

Volume

171.

Which state of matter does not have a definite shape but does have a definite volume?

a)

Solid

b)

Liquid

c)

Gas

172.

What is the process called when a gas turns into a liquid?

a)

Condensation

b)

Melting

c)

Freezing

d)

Evaporation

173.

What is the process called when a solid changes to a liquid?

a)

Freezing

b)

Evaporation

c)

Melting

d)

Condensation

174.

What is the process called when a liquid changes into a gas?

a)

Freezing

b)

Evaporation

c)

Melting

d)

Condensation

175.

Match the following

a)

Solid to Liquid

1.

Melting

b)

Liquid to Gas

2.

Evaporating

c)

Solid to Gas

3.

Sublimation

d)

Gas to Liquid

4.

Condensing

e)

Liquid to Solid

5.

Freezing

176.
What is the formula for density?
a)
density = mass x volume
b)
density = mass / volume
c)
density = mass + volume
d)
density = mass - volume
177.
Put the liquids in order from most dense to least dense?
a)

4

b)

3

c)

2

d)

1

1)
2)
3)
4)
178.
Why does ice float?
a)
Liquid water is less dense than solid water.
b)
Solid water is less dense than liquid water.
c)
Gaseous water is less dense than solid water.
d)
Liquid water is less dense than gaseous water.
179.
What units are used to measure Density?
a)
cm3/g
b)
g
c)
g/cm3
d)
cm3
180.
Jack has a rock. The rock has a mass of 14g and a volume of 2cm3. What is the density of the rock?
a)
7 mL
b)
7 g/cm3
c)
28 g/cm3
d)
1/7 g/cm3
181.
Helium balloons rise on earth because
a)
helium is less dense than air
b)
helium is more dense than air
c)
helium is cooler than air
d)
helium is warmer than air
182.
A force can be described as ________
a)
A push or a pull.
b)
An up or a down.
c)
A left or a right.
d)
Movement.
183.
Which of these is not a contact force? 
a)
Tension
b)
Gravitational force
c)
Reaction force
d)
Friction
184.
Which one of the following statements is true?  
a)
Gravitational force only exists on Earth.
b)
Gravitational force can attract and repel.
c)
Gravitational force causes air resistance.
d)
Gravitational force is always attractive.
185.
In which situation is friction a useful force? 
a)
On a playground slide.
b)
In the moving parts of gears.
c)
Car tyres gripping the road.
d)
In a bicycle chain.
186.
What is a general name for a force that makes a vehicle move? 
a)
Thrust
b)
Friction
c)
Power
d)
Air resistance
187.
When a force can act without touching the object, what type of force is it?
a)
Friction
b)
Contact
c)
Non-contact
d)
Air resistance
188.
Which scientific instrument is used to measure forces? 
a)

Scale

b)

Newton meter

c)

Force device

d)

Top pan balance

189.
In which direction does air resistance always act? 
a)
Upwards
b)
Downwards
c)
Against the direction of movement.
d)
Behind boat sails.
190.
What is the size and direction of the normal reaction force which would balance a 50N dog? 
a)
5 kg upwards
b)
50 N upwards
c)
50 N downwards
d)
It is already balanced.
191.
For a boat to float, the upthrust and the weight must
a)
Be the same size in opposite directions.
b)
Both be upwards.
c)
Be identical.
d)
Add up to cause it to float.
192.

An apple has a mass of 0.2 kg. Calculate the weight of the apple on Earth (g = 10 N/kg).

(a)  

193.

What is the net force on the car?

a)

400 N forward (left)

b)

0 N (balanced forces)

c)

200 N forward (left)

d)

200 N backward (right)

194.

What will the net force on the soccer ball be?

a)

50 N to the left

b)

50 N to the right

c)

200 N to the left

d)

200 N to the right

195.

Person on the left = 45 N

Person on the right = 32 N

What is the net force?

a)

zero N

b)

10 N

c)

77 N

d)

13 N

196.
Are forces balanced or unbalanced when a marble speeds up rolling down a ramp?
a)
Balanced
b)
Unbalanced
197.

What is the NET FORCE of this diagram?

a)

17 N, right

b)

17 N, left

c)

23 N, right

d)

12 N, up

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