wayground logo

Free Printable Worksheets

NEW

Font size

S
M
L
XL
Worksheets

KS3 SCIENCE: PRESSURE, MOMENTS AND DENSITY

Total questions: 77

Worksheet time: 2hrs 12mins

Name
Class
Date
1.
What is any substance than can flow and take the shape of the container that holds it
a)
pressure
b)
fluid
c)
atmospheric pressure 
d)
density
2.
Fluids can also include__ and__. 
a)
solids and liquids
b)
solids and gases
c)
liquids and gases
d)
liquids
3.
In liquids, the volume stays the same no matter what shape the container is.
a)
True
b)
False
4.
In gases, the volume does stay the same when placed in different containers
a)
True
b)
False
5.
What is the amount of force per unit of area applied to an object’s surface?
a)
fluid
b)
pressure
c)
atmospheric pressure
d)
density
6.
What is the equation used to calculate pressure?
a)
pressure= force/mass
b)
pressure =mass/volume
c)
pressure=area/force
d)
pressure=force/area
7.
What is the unit of measurement for pressure?
a)
pascal
b)
grams
c)
milliters
d)
meters
8.
A fluid applies pressure perpendicular to all sides of an object in contact with the fluid.
a)
True
b)
False
9.
Pressure decreases when the surface area over which a force is applied increases
a)
True
b)
False
10.
Pressure increases when the surface area over which a force is applied increases.
a)
True
b)
False
11.
What is the ratio of weight of all the air above you to your surface area 
a)
pressure
b)
fluids
c)
density
d)
atmospheric pressure
12.
Atmospheric pressure increases as you move towards lower elevations and decreases as you move into higher elevations.
a)
True
b)
False
13.
In underwater pressure, as the depth increases, so does the pressure.
a)
True
b)
False
14.
Underwater pressure also helps to explain why the wall of a dam is thicker at the bottom than the top because it applies more pressure at the bottom than at the top. 
a)
True
b)
False
15.
When comparing two or more fluids, the fluid that weighs more is considered a lot denser than the other fluid(s).
a)
True
b)
False
16.
What is the equation used to calculate density?
a)
density=volume/mass
b)
density=force/area
c)
density=mass/volume
d)
density=force/volume
17.
Molecules in most solids are closer together than the molecules in liquids or gases
a)
True
b)
False
18.
Liquids and gases are considered denser than solids.
a)
True 
b)
False
19.
What is the density of water?
a)
1.0 g/cm³
b)
1.5 g/cm³
c)
2.0 g/cm³
d)
2.5 g/cm³
20.
Army tank tracks are useful for travelling through the mud because..
a)
they decrease the force the vehicle exerts on the ground
b)
they increase the force the vehicle exerts on the ground
c)
they decrease the pressure the vehicle exerts on the ground
d)
they increase the pressure the vehicle exerts on the ground
21.
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
22.
Where would you find the largest pressure?
a)
At the bottom of the ocean
b)
At the top of Mt Everest
c)
Close to ground on the Scotch oval
d)
In a rockpool on the Great Barrier Reef
23.
What is the difference between particles in a gas and a solid?
a)
gas particles are closer together
b)
solid particles move faster than gas particles
c)
solid particles expand on heating
d)
gas particles have more kinetic energy than solid particles
24.
Which of the statements is true?
a)
The bottom of the boot exerts more pressure than the shoe as a result of an increase in surface area.
b)
The bottom of the shoe exerts more pressure than the boot as a result of an decrease in surface area.
c)
The bottom of the shoe exerts the same pressure as the bottom of the boot.
25.
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
26.
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
27.
Convert 10 kg to Newtons
a)
0.098 N
b)
4.5 N
c)
100 N
d)
98 N
28.
Pressure is measured in what units
a)
Newtons
b)
m/s
c)
Pascals
d)
Moles
29.
Pressure is equal to force divided by what
a)
area
b)
mass
c)
time
d)
distance
30.
Pressure can be measured in Pascales (Pa) or Newtons per square metre.
1 Pa = 1N/m2
a)
True
b)
False
31.
How can we increase the gas pressure inside a sealed container?
a)
Increase the number of particles inside the container
b)
Increase the temperature
c)
Decrease the volume of the container
d)
All of these
32.
Atmospheric pressure increases as you move towards lower elevations and decreases as you move into higher elevations.
a)
True
b)
False
33.

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

a)

increases

b)

decreases

c)

stays the same

34.
What decreases as you go up in the atmosphere?
a)
Altitude
b)
Atmosphere
c)
Meteors
d)
Air Pressure
35.

An object will float on water if it is

a)

less dense than water.

b)

more dense than water.

c)

the same density as water.

36.
Buoyancy is the tendency for objects to float in a fluid. Buoyancy pushes the opposite direction of...
a)
waves push.
b)
magnetic pull.
c)
the wind.
d)
gravity's pull
37.

A 20N weight is hung from a spring balance which reads 17N when it is completely submerged in water. What is the upthrust of the body of water?

a)

37N

b)

20N

c)

17N

d)

3N

38.

Why is it easier to cut something with a sharp knife than with a blunt one?

a)

The area of the knife edge is large so pressure is greater.

b)

The area of the knife edge is small so pressure is greater.

c)

The area of the knife edge is large so pressure is smaller.

d)

The area of the knife edge is small so pressure is smaller.

39.

If all these birds are the same weight, which bird has the lowest pressure under its feet?

a)
b)
c)
d)
40.

A basketball player weighs 500 N. The area of one of his trainers is 250 cm2.

When he puts all his weight on one foot, how much pressure does he put on the ground?

a)

0.5 N/cm2

b)

2 N/cm2

c)

250 N/cm2

d)

125 000 N/cm2

41.

The pressure in liquids and gases is caused by

a)

the particles pressing down.

b)

the particles pushing up.

c)

the particles moving sideways.

d)

the particles moving in all directions and colliding with things.

42.

When a gas is compressed:

a)

the particles bump into the walls of the container less often.

b)

the pressure drops.

c)

the particles become more spread out.

d)

the pressure increases.

43.

A hydraulic system:

a)

uses air to smooth out bumps.

b)

uses air to send a force from one place to another.

c)

uses a liquid to send a force from one place to another.

d)

uses a solid to send a force from one place to another.

44.

In science, a lever is:

a)

a complex machine which keeps the size of force you put in the same.

b)

a simple machine which changes the size of force you put in.

c)

a simple machine which changes the area of force you put in.

d)

someone about to finish school.

45.

Which are the correct labels for the lever shown below?

a)

X = effort, Y = pivot, Z = load

b)

X = pivot, Y = effort, Z = load

c)

X = load, Y = pivot, Z = effort

d)

X = load, Y = effort, Z = pivot

46.

Which lever will make it easiest to move the rock?

a)

A

b)

B

c)

C

d)

D

47.

The moment of a force is:

a)

its turning effect.

b)

how long it takes to work.

c)

how far it moves.

d)

the distance of a force from a pivot.

48.

You are opening a can of paint with a screwdriver. You apply a force of 10 N, 20 cm from the pivot. What is the moment of the force?

a)

2 Nm

b)

20 Nm

c)

200 Nm

d)

2000 Nm

49.

What is the distance from the pivot of the boy on the seesaw?


Boy: 300 N x ? m Girl: 450 N x 2 m

a)

1 m

b)

2 m

c)

3 m

d)

4 m

50.
Army tank tracks are useful for travelling through the mud because..
a)
they decrease the force the vehicle exerts on the ground
b)
they increase the force the vehicle exerts on the ground
c)
they decrease the pressure the vehicle exerts on the ground
d)
they increase the pressure the vehicle exerts on the ground
51.
What is the anticlockwise moment acting on this crane?
a)
80,000Nm
b)
100,000Nm
c)
120,000Nm
d)
140,000Nm
52.

A basketball player weighs 500 N. The area of one of his trainers is 250 cm2.

When he puts all his weight on one foot, how much pressure does he put on the ground?

a)

0.5 N/cm2

b)

2 N/cm2

c)

250 N/cm2

d)

125 000 N/cm2

53.

What is the distance from the pivot of the boy on the seesaw?


Boy: 300 N x ? m Girl: 450 N x 2 m

a)

1 m

b)

2 m

c)

3 m

d)

4 m

54.

You are opening a can of paint with a screwdriver. You apply a force of 10 N, 20 cm from the pivot. What is the moment of the force?

a)

2 Nm

b)

20 Nm

c)

200 Nm

d)

2000 Nm

55.
Arrange the density of spheres, W, X, Y and Z, in descending order.
a)
X, Y, W, Z
b)
Y, X, W, Z
c)
X, W, Y, Z
d)
W, Z, X, Y
56.
Where is pressure the greatest on the dam?
a)
D
b)
C
c)
B
d)
A
57.
Where would you find the largest pressure?
a)
At the bottom of the ocean
b)
At the top of Mt Everest
c)
Close to ground on the Scotch oval
d)
In a rockpool on the Great Barrier Reef
58.

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.

59.

What is the correct equation linking density mass and volume

a)

d = m / v

b)

d = m x v

c)

d = v / m

60.

Calculate the density of the cube.

a)

2 g/cm3

b)

4 g/cm3

c)

6 g/cm3

d)

8 g/cm3

61.
What is the density of a plastic ball that has a volume of 6cm3 and a mass of 12g? 
a)
2g/cm3
b)
.5g/cm3
c)
72g/cm3
d)
4mL
62.
What is the density of a book that has a mass of 400g and a volume of 600cm3?
a)
1.5g/cm3
b)
2400g/cm3
c)
325mL
d)
.7g/cm3
63.
What is the volume of 150 grams of lead if it has a density of 11.3 g/cm3?
a)
13.3 g
b)
13.3 cm3
c)
.075 g
d)
1695 cm3
64.
If a block of wood has a density of 0.6 g/cm3 and a mass of 120 g, what is its volume?
a)
200 cm3
b)
0.005 cm3
c)
200.0 ml
d)
72 ml
65.
Find the density of a 2 cm x 2 cm x 2 cm cube with a mass of 64 g.
a)
6 cm3
b)
12 g/cm3
c)
128 g/cm3
d)
8  g/cm3
66.
Water displacement is used to find what?
a)
Density
b)
Mass
c)
Volume
d)
Weight
67.
What is the volume of the rock?
a)
30cm3
b)
10cm3
c)
40cm3
d)
20cm3
68.
What is the volume of Object X?
a)
10.0 cm3
b)
15.0 cm3
c)
20.0 cm3
d)
25.0 cm3
69.
Frank has a paper clip. It has a mass of 9g and a volume of 3cm3. What is its density?
a)
3 g/cm3
b)
1/3 g/cm3
c)
27 g/cm3
d)
39 g/cm3
70.
Frank has an eraser. It has a mass of 4g, and a volume of 2cm3. What is its density?
a)
8 g/cm3
b)
2 g/cm3
c)
1/2 g/cm3
d)
24 g/cm3
71.
A bar of copper has a mass of 216g and a volume of 24cm3. What is the density of copper?  
a)
9g/cm3
b)
.11g/cm3
c)
5184g/cm3
d)
322mL
72.
What is the volume of a 250g piece of stainless steal with a density 3.0g/cm3
a)
83.3 cm3
b)
750 cm3
c)
3.01 cm3
73.
Why do ice cubes float in a  glass of water?
a)
the ice cubes are more dense than the water
b)
the water is more dense than the ice cubes
c)
the water is more dense than the glass
d)
the ice is more dense than the glass
74.
What is the density of a liquid that has a mass of 27g and a volume of 30ml?
a)
0.9 g/ml
b)
3 g/ml
c)
57 g/ml
d)
810 g/ml
75.
A diamond has a mass of 1.2 g.  If diamond has a density of 3.51 g/mL, what is the volume of the diamond.
a)
0.34 mL
b)
2.9 g/mL
c)
2.3 mL
d)
4.2 mL
76.

Calculate the density of the cube.

a)

2 g/cm3

b)

4 g/cm3

c)

6 g/cm3

d)

8 g/cm3

77.

what is the volume of the cube?

a)

123

b)

144

c)

244

d)

150

Similar Resources on Wayground

Unit 5 Review: Life Cycles

72 questions

Unit 5 Review: Life Cycles

quiz

Worksheet

•

7th Grade

Year 7 ecology

79 questions

Year 7 ecology

quiz

Worksheet

•

7th Grade

ÔN TẬP HK I - LÝ 6

75 questions

ÔN TẬP HK I - LÝ 6

quiz

Worksheet

•

6th Grade

SOL REVIEW 8th Grade

80 questions

SOL REVIEW 8th Grade

quiz

Worksheet

•

6th - 8th Grade

Earth Science SSA Review 6th & 7th

80 questions

Earth Science SSA Review 6th & 7th

quiz

Worksheet

•

6th - 8th Grade

Human Body Systems Review

75 questions

Human Body Systems Review

quiz

Worksheet

•

7th Grade

STEMbee

80 questions

STEMbee

quiz

Worksheet

•

7th Grade

IA3 Review

75 questions

IA3 Review

quiz

Worksheet

•

8th - 12th Grade