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Buoyancy

Total questions: 16

Worksheet time: 48mins

Name
Class
Date
1.

Density is measure of how much (a)   is in a certain volume.

2.

(a)   is the tendency of certain objects to float or rise in a fluid that is denser than the object.

3.

The force that water and other fluids exert upward on an object is called the (a)   force.

4.
An empty plastic bottle is floating on water. How could we make it sink?
a)
You can’t make it sink.
b)
Increase its density.
c)
Fill with helium.
d)
Decrease its density.
5.
When an object is placed in water it _____, or pushes aside the water.
a)
displaces
b)
weighs
c)
sinks
d)
floats
6.
When the gravitational force is stronger than the buoyant force, the object _____.
a)
sinks
b)
floats
c)
is neutrally buoyant
d)
all of these
7.
An object will rise up in a fluid if _____.
a)
gravity and buoyant force are equal
b)
density of object and fluid is equal
c)
the buoyant force is stronger than gravity
d)
the density of the object is greater than the fluid
8.
Archimedes' Principle states the buoyant force acting on an object equals the _____ of the fluid displaced by the object.
a)
volume
b)
weight
c)
density
d)
length
9.
Question Image

Identify each item as positively buoyant, neutrally buoyant, or negatively buoyant.

C.

positively buoyant

E.

neutrally buoyant

D.

positively buoyant

B.

negatively buoyant

A.

negatively buoyant

10.
  1. What factors contribute to an object's ability to float?

a)

Height

b)

Width

c)

Density

d)

None of the above

11.

What causes oil to float upwards when mixed with water?

a)

Lesser density than water

b)

Greater density than water

c)

Equal density with water

d)

None of these

12.

Which of these will not float in water?

a)

Toy Duck

b)

Gold

c)

Floater

d)

Footballl

13.

Which force is acting on these objects that has enabled them to float on water?

a)

Gravitational Force

b)

Magnetic Force

c)

Electrostatic Force

d)

Buoyant Force

14.

What happens to the buoyancy of an object if its density increases?

a)

Its buoyancy remains unchanged

b)

It becomes neutrally buoyant

c)

It sinks faster

d)

It floats higher

15.
A buoyant force is an upward force applied on an object by a 
a)
Substance
b)
Fluid
c)
Pressure
d)
Displacement
16.
A buoyant force is a(n) ______ force 
a)
Upward
b)
Downward
c)
Side ways