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Density Answers

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Janice measured the mass and the volume of an object. She then determined the density of the object by dividing the object’s mass by its volume (D = ). Which value would most likely represent the density of the object?

Question illustration
A
–1 g/cm3
B
4 m/s
C
–3 m/s
D
6 g/cm3
2
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What is the equation for density?

A
D =
Option A
B
D =
Option B
C
D =
Option C
D
D = mv2
Option D
3

Mason notices that his boat sinks lower into the water in a freshwater lake than in the ocean. What could explain this?

A
The boat is more dense in salt water.
B
The boat is less dense in salt water.
C
Salt water is less dense than freshwater.
D
Salt water is more dense than freshwater.
4

Gerald is fishing. He uses a bobber that floats on the surface to show him if the line is being moved, and a lure that sits below the surface to attract fish.Which statement accurately describes the densities of these two items?

A
The bobber and lure are more dense than the water.
B
The bobber and lure are less dense than the water.
C
The bobber is more dense than the water, and the lure is less dense than the water.
D
The bobber is less dense than the water, and the lure is more dense than the water.
5

Which describes how to calculate density?

A
mass divided by volume
B
volume divided by mass
C
mass added to volume
D
volume subtracted from mass
6

There are liquids of different densities together in a container. What will happen to the liquid with the lowest density?

A
It will move to the bottom.
B
It will move to the top.
C
It will bubble out as a gas.
D
It will form a solid.
7

What happens when an object has a density greater than that of the surrounding liquid?

A
The object will sink.
B
The object will float.
C
The object will become a solid.
D
The object will become a gas.
8

This chart shows the volumes of four different objects.If the objects all have the same mass, which object is the most dense?

Question illustration
A
Object 1
B
Object 2
C
Object 3
D
Object 4
9

If steel is more dense than lake water, why can a boat float?

A
The average density of the boat, including the steel and air, is less dense than 1.00 g/cm³.
B
The average density of the boat, including the steel and air, is more dense than 1.00 g/cm³.
C
Lake water is more dense than pure water.
D
Steel has a special ability to float regardless of density.
10

The density of gold is 19.3 g/cm3. What is the volume of a 13 g gold nugget? (Density: D = )

Question illustration
A
.25 cm3
B
.67 cm3
C
1.48 cm3
D
2.50 cm3

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