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WorksheetsDensity and Buoyancy Review
Total questions: 12
Worksheet time: 6mins
Name
Class
Date
1.
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
2.
Looking at the image... can oak float in water?
a)
Yes
b)
No
3.
How do we calculate density? (with correct units!)
a)
D = m/v (in g/mL or g/cm3)
b)
D = v/m (in g/mL or g/cm2)
c)
D=m/v (in mL/g or cm3/g)
4.
True or False: Volume is the amount of matter in a substance. Mass is the amount of space a substance takes up.
a)
True
b)
False
5.
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
6.
True or False: Buoyancy is an upwards force measured in Newtons.
a)
True
b)
False
7.
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
8.
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.
9.
Which will result in positive buoyancy?
a)
When the buoyant force is greater than the force of gravity
b)
When the buoyant force is equal to the force of gravity
c)
When the buoyant force is less than the force of gravity
10.
From Friday's lab, when the egg was floating in between the salt water and fresh water, we say it has...
a)
Positive buoyancy
b)
Neutral buoyancy
c)
Negative buoyancy
11.
What is a hydrometer?
a)
an instrument that measures pressure
b)
an instrument that measures buoyancy
c)
an instrument for ocean studies
d)
an instrument designed to measure liquid density
12.
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
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