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WorksheetsBuoyancy and Archimedes principle
Total questions: 51
Worksheet time: 27mins
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.
The buoyant force on floating objects equals the weight of the floating object
a)
true
b)
false
3.
If an object weighing 50.0 N displaces a volume of water with a weight of 10.0 N, what is the buoyant force on the object?
a)
10 N
b)
60 N
c)
40 N
d)
20 N
4.
Which bundle weights more?
a)
1 kg of nails
b)
1 kg of cotton
c)
both have the same weight
5.
The volume of the liquid an object displaces will be equal to the buoyant force.
a)
True
b)
False
6.
When the weight of an object is greater than the buoyant force, the object will ...
a)
Sink
b)
Float
c)
Expand
d)
Shrink
7.
If an object is more dense than the fluid which it is in, the buoyant force will be less and the object will ...
a)
float
b)
sink
c)
shrink
d)
expand
8.
If the mass of an object is 6kg on earth. what would the mass be on the moon?
a)
6kg
b)
0kg
c)
1kg
d)
13kg
9.
Looking at the image... can oak float in water?
a)
Yes
b)
No
10.
Water is the only fluid that can provide buoyancy.
a)
true
b)
false
11.
What is the volume of Object X?
a)
10.0 cm3
b)
15.0 cm3
c)
20.0 cm3
d)
25.0 cm3
12.
Displacement means
a)
to take place
b)
to replace
c)
to fill up space
d)
to move aside
13.
Buoyancy force equals
a)
weight of displaced water
b)
the "weight loss" of the object immersed in water
c)
upward force of water
d)
all of these
14.
What causes the apparent weight loss of an object immersed in water?
a)
Gravity
b)
Buoyancy
c)
Newton's 1st law
d)
Newton's 2nd law
15.
The buoyant force on an object equals 250 N. What is the weight of the displaced water?
a)
250 N
b)
250 lbs
c)
250 N/9.8 m/sec2
d)
not enough information given
16.
What direction is the buoyant force in?
a)
Downward
b)
Left
c)
Right
d)
Upward
17.
Does the depth of a liquid (as in a lake or a pond or the ocean) affect the buoyant force?
a)
no
b)
yes
c)
maybe
d)
depends
18.
If a boat hits an iceberg bigger than it and it has a giant hole what will happen to it?
a)
The boat will stay afloat but will have water in it
b)
The boat’s engine will bog down making it run out of gas
c)
The boat will lose density slowly and eventually sink
d)
The boat will hit the iceberg and drive under it
19.
Density is defined as...
a)
Centimeters cubed per mass of substance
b)
Mass per unit volume of a substance
c)
Flow rate of a substance
20.
Buoyancy is the tendency for objects to float in a fluid. We consider buoyancy the...
a)
Un-gravity force
b)
Anti-gravity force
c)
Gravitational pull
d)
Downwards pull on an object
21.
True or False: Buoyancy is an upwards force measured in Newtons.
a)
True
b)
False
22.
Swim bladders and ballistic tanks in a submarine serve to control the ________________ of a fish and a submarine.
a)
Buoyant force
b)
Neutral buoyancy
c)
Average density
23.
Archimedes' Principle states that...
a)
The buoyant force acting on an object equals the volume of the fluid displaced by the object.
b)
The buoyant force acting on an object equals the weight (force of gravity) of the fluid displaced by the object.
c)
The buoyant force acting on an object will always be equal.
24.
How could you make plastic sink and steel float?
a)
You can't
b)
Change the shape and therefore surface area
c)
Remove some mass
25.
explains why the the buoyant force on a rock that displaces 5 N of water is 5 N
a)
Bernouilli's principle
b)
MAK principal
c)
Archimedes. principle
d)
Harry Potter's law
26.
pushes an ice cube to the top of a glass of water
a)
buoyant force
b)
density
c)
a sinking object
d)
compressed air
27.
has a weight of 15 N and a buoyant force of 18 N
a)
sinking object
b)
floating object
c)
buoyed up object
d)
my grandmother
28.
If two objects are made of the same substance and have the same mass, the shape of the object determines whether or not it sinks or floats in a fluid.
a)
True
b)
False
29.
An object sinks in a fluid until it floats.
a)
True
b)
False
30.
If an object floats in water, the weight of the water displaced is greater than the weight of the body immersed in water.
a)
true
b)
false
31.
If you put a brick in a tub filled to the top with water, the amount of water that overflows is equal to the volume of the brick.
a)
true
b)
false
32.
Hot air balloons float because hot air displaces cool air in the atmosphere.
a)
true
b)
false
33.
Which of the following do NOT use compressed air to provide buoyancy?
a)
Airplanes
b)
Scuba divers
c)
Fish
d)
Submarines
34.
Which of the following is a true statement?
a)
A rowboat has positive buoyancy
b)
A cork has negative buoyancy
c)
A brick has positive buoyancy
d)
A penny has neutral buoyancy
35.
What is buoyant force?
a)
An upward force exerted by fluids on an object.
b)
An downward force exerted by fluids on an object.
36.
A water bottle filled with stones and sinking in the water is an example of.......
a)
negative buoyancy
b)
positive buoyancy
37.
Buoyancy force equals
a)
weight of displaced water
b)
the "weight loss" of the object immersed in water
c)
upward force of water
d)
all of these
38.
If an object displaces less water than its weight, the object will
a)
float
b)
accelerate
c)
create friction
d)
sink
39.
If an object displaces more water than its weight, the object will
a)
float
b)
accelerate
c)
create friction
d)
sink
40.
The weight of the water displaced equals the upward force of water on an object
a)
Pressure
b)
Inertia
c)
Archimedes' Principle
d)
The Law of Water
41.
The buoyant force on an object equals 250 N. What is the weight of the displaced water?
a)
250 N
b)
250 lbs
c)
250 N/9.8 m/sec2
d)
not enough information given
42.
The tool used to measure the mass of a substance or object is a ______________.
a)
balance
b)
graduated cylinder
c)
ruler
d)
thermometer
43.
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
44.
Which units of measurement are used for volume?
a)
grams
b)
centimeters
c)
grams/milliliter
d)
milliliter
45.
Which lab tool might you use to measure the volume of a liquid?
a)
electric scale
b)
bunsen burner
c)
test tube
d)
graduated cylinder
46.
What is the volume of Object X?
a)
10.0 cm3
b)
15.0 cm3
c)
20.0 cm3
d)
25.0 cm3
47.
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
48.
An empty beaker has a mass of 60 grams. When mercury is added to the beaker, it has a mass of 200 grams. What is the mass of the mercury?
a)
140 grams
b)
200 grams
c)
140 mL
d)
260 g
49.
What is the volume of the fish?
a)
18.0 cm3
b)
6.0 cm3
c)
38.0 cm3
50.
Which box has a higher density?
a)
Box A
b)
Box B
c)
cannot be determined
d)
they are the same
51.
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
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