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Fluids and Gas Laws

Total questions: 35

Worksheet time: 1hrs 12mins

Name
Class
Date
1.
The upward force exerted by a liquid on an object immersed in or floating on the liquid
a)
pressure
b)
buoyant force
c)
normal force
d)
gravity
2.
When the weight of an object is greater than the buoyant force, the object will ... 
a)
Sink
b)
Float 
c)
Expand
d)
Shrink
3.
What direction is the buoyant force in?
a)
Downward
b)
Left
c)
Right
d)
Upward
4.

What do we call the the amount of force exerted on a certain area?

a)

fluid

b)

pressure

c)

buoyant force

d)

normal force

5.
Car brakes and car jacks are examples of
a)
hydraulic systems
b)
archimedes' principle
c)
atmospheric pressure
d)
buoyancy
6.

What does viscosity mean?

a)

How close the particles are together.

b)

The amount of matter in a substance.

c)

How easily a fluid flows.

d)

How dense a fluid is.

7.
When pressure is applied to a confined fluid, the increase in pressure is transmitted equally to all parts of the fluid. This fact is called________.
a)
Pascal's Principle
b)
Newton's Principle
c)
Archimedes' Principle
d)
Bernoulli's Principle
8.

Which principle do airplanes take advantage of to fly?

a)

Archimedes' Principle

b)

Bernoulli's Principle

c)

Pascal's Principle

9.
Fluids flow
a)
only when warmed up.
b)
from regions of low pressure to regions of high pressure.
c)
until evenly spread out.
d)
from high to low pressure.
10.

If an object has a density of 3.6 g/mL and you put it into water (density =1.0g/mL,) will it sink or float?

a)

sink

b)

float

11.

What is the SI unit use for hydraulic pressure?

a)

Kg/m3

b)

Pa

c)

Litre

d)

Kilometer

12.

To calculate pressure you need to know ...

a)

Force & Volume

b)

Density & Volume

c)

Power & Area

d)

Force & Area

13.
The pressure resulting from a force of 50 N exerted over an area of 5 m2 is
a)
10 N
b)
0.1 N
c)
10 N/m2
d)
0.1 Pa
14.

A person wearing boots and a person wearing stilleto heels stand on a wooden floor. They both have the same weight. Which person exerts a greater pressure on the floor?

a)

boots because they have a larger surface area

b)

stiletto heels because they have a larger surface area

c)

boots because they have a smaller surface area

d)

stiletto heels boots because they have a smaller surface area

15.

When force increases...

a)

pressure increases

b)

pressure decreases

c)

pressure stays the same

d)

pressure increases then decreases

16.

When area increases...

a)

pressure increases

b)

pressure decreases

c)

pressure stays the same

d)

pressure increases then decreases

17.

Any substance that can easily flows and therefore can easily change shape.

a)

Fluid

b)

Liquid

c)

Gas

d)

Solid

18.

In a hydraulic machine, a force of 2.25 N is applied on the piston of area 5 cm2. what force is obtained on the bigger pistion of area 100cm2 ?

a)

45 N

b)

225 N

c)

450 N

d)

22.5 N

19.
Charles' Law States...
a)
As Pressure goes up volume goes down
b)
As Pressure goes up temperature goes up
c)
As Volume goes up temperature goes up 
d)
As Pressure goes down volume goes down 
20.
Gas Laws involve what three terms?
a)
Solid Liquid Gas 
b)
Speed Velocity Acceleration 
c)
Elements Compounds Mixtures 
d)
Pressure Temperature Volume 
21.
Whose law states that as pressure goes up, volume goes down?
a)
Charles 
b)
Boyle
c)
Aglow
d)
Mazias 
22.
Directly proportional means that as one value increases ....................
a)
the other stays the same 
b)
the other increases as well
c)
the other decereases
d)
the other goes to zero
23.
In order to convert to Kelvin, you add ______ to the Celsius measurement.
a)
372
b)
273
c)
237
d)
732
24.
You have a gas that has a pressure of 2 ATM and a volume of 10L.  What would be the new volume if the pressure was changed to 1 ATM?
a)
5 L
b)
20 L
c)
It would stay at 10L
d)
1 L
25.
What is 50 °C in Kelvin?
a)
223
b)
323
c)
100
d)
50
26.
If 200 mL of a gas at 27°C is cooled to -33°C at a constant pressure, the volume will be
a)
250 mL
b)
204 mL
c)
196 mL
d)
160 mL
27.

A gas has a volume of 10cm3 and is at a pressure of 100kPa. The volume is doubled to 20cm3, what is its new pressure?

a)

100kPa

b)

50kPa

c)

200kPa

d)

10kPa

28.

Convert 5778K to celsius

a)

5,5050C

b)

5,8510C

c)

5,5080C

d)

5,5000C

29.

According to Archimedes, loss in weight is equal to

a)

weight of liquid

b)

weight of the body

c)

weight of the liquid displaced by the immersed part of the body

d)

density of liquid

30.

Pascal states that

a)

Pressure is force per unit area

b)

When velocity is higher, the pressure is lower

c)

When force is applied, the pressure is transmitted equally through the fluid

d)

Pressure transmitted is directly proportional to the force applied

31.
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
32.
Fluids can be...
a)
solids
b)
liquids
c)
gases
d)
liquids or gases
33.
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
34.
Why do some substances float on water?
a)
they are warmer than water
b)
they are cooler than water
c)
they are more dense than water
d)
they are less dense than water
35.
Which liquid is the least dense?
a)
oil
b)
water
c)
syrup 
d)
plastic bottle

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