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Review Jan Yr 9

Total questions: 25

Worksheet time: 38mins

Name
Class
Date
1.
What is the correct formula to calculate pressure?
a)
P=F x A
b)
P = F/A
c)
P=A/F
d)
P=F+A
2.
A hammer hits a nail with a force of 50 N into some wood. The area of the point of the nail is 0.02 cm2. What is the pressure the nail puts on the wood?
a)
2500 N/cm2
b)
250 N/cm2
c)
190 N/cm3
d)
6000 N
3.
If the horse reared up on 2 legs what effect would it have on the pressure?
a)
it will exert half the pressure it did before
b)
it will exert the same pressure it did before
c)
it will exert twice the pressure it did before
d)
it will exert four times the pressure it did before
4.
A student uses a glue stick with an area of 4 cm2, putting a pressure of 0.5 N/cm2 on her book. Calculate the force she puts on the glue stick.
a)
1N
b)
2N
c)
20N
d)
15N
5.
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
6.

any substance that can flow

a)

solid

b)

fluid

c)

vapor

d)

gas

7.

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.

8.

The figure shows a pond with two fish P and Q.

What is the correct relation of the water pressures on fish P and fish Q?

a)

Water pressure on fish Q > Water pressure on fish P.

b)

Water pressure on fish Q < Water pressure on fish P.

c)

Water pressure on fish Q = Water pressure on fish P.

9.
At higher temperatures
a)
particles in an object have less energy
b)
particles in an object move faster
c)
a gas contracts
10.
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
11.
___________is the result of the weight of a column of air pushing on an area.
a)
air pressure
b)
density
c)
volume
d)
none of the above
12.

The pressure of sea water at the bottom of the sea is 1.2 × 108 N m–2.

Determine the depth of the sea.

[Density of sea water = 1020 kg m–3]

a)

1.18×104 m

b)

1.18×105 m

c)

1.18×106 m

d)

1.18×109 m

13.

A submarine has a surface area of 300 m2.

The density of sea water is 1050 kg m–3.

At what depth under the sea, will the additionalpressure on the submarine be 5 × 105 Pa?

[Take g = 10 N kg–1]

a)

47.62 m

b)

67.62 m

c)

87.62 m

d)

57.62 m

14.

A coin sinks to a depth of 5 m in a liquid of density 800 kg m–3. At what depth, in a different liquid of density 600 kg m–3, will the coin be subjected to the same pressure?

a)

6.67 m

b)

8.67 m

c)

9.67 m

d)

5.67 m

15.
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
16.
The pressure applied to a motionless fluid confined in a container is transmitted undiminished throughout the fluid.  Which principle is this?
a)
Flotation
b)
Archimedes
c)
Pascals
17.
A device that is used to measure atmospheric pressure is a ___________.
a)
barometer
b)
thermometer
c)
kilometer
d)
micrometer
18.
What happens to air pressure as you move upward into the atmosphere?
a)
increases
b)
decreases
c)
stays the same
19.
What is the weather conditions in an area over a long period of time?
a)
climate
b)
temperature
c)
elevation
d)
precipitation
20.

The diagram shows a manometer containing a liquid. The manometer is used to find the difference between the pressure of a gas and atmospheric pressure. Which distance represents this pressure difference?

a)

A

b)

B

c)

C

d)

D

21.

The diagram shows a mercury barometer. Which distance is used to calculate the pressure of the atmosphere?

a)

25cm

b)

75cm

c)

80cm

d)

100cm

22.

The diagram shows a simple mercury barometer. The atmospheric pressure increases. Which distance increases?

a)

V W

b)

W Y

c)

X Y

d)

X Z

23.

Two identical fish tanks are filled to the same level with water. One tank contains fresh water and the other sea water. Sea water is more dense than fresh water. Which fish experiences the greatest pressure?

a)

A

b)

B

c)

C

d)

D

24.

Water manometer is used to measure the pressure of a gas supply to a house. It gives a reading of h cm of water. Why is it better to use water rather than mercury in this manometer?

a)

h would be too large if mercury were used

b)

h would be too small if mercury were used

c)

The tube would need to be narrower if mercury were used

d)

The tube would need to be wider if mercury were used

25.

The height of Hg in a barometer is the same whatever the location and weather conditions.

a)

true

b)

false

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