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7th Grade Matter Review Utah #1
Test Description: 7th Grade Matter Review St1 Ob2
Instructions: Answer all questions to get your test result.
1) Which would you use to determine the mass of an object?
A
Graduated cylinder
B
Triple beam balance
C
Meter stick
D
Bathroom scale
2) A student lifts two soup cans that are the same size. He says that one is heavier than the other. What do you know about the heavier can?
A
it has more mass per unit volume
B
it is less dense than the lighter one
C
it has larger chunks of vegetables in it
D
it has more volume than the lighter one
3) Which would you use to find the volume of a rectangular cube?
A
Bathroom scale
B
Triple beam balance
C
Graduated cylinder
D
Meter stick
4) A rock is dropped into a graduated cylinder containing 40 mL of water. The new volume is 47 mL. What is the volume of the rock?
A
7 mL
B
4 mL
C
87 mL
D
47 mL
5) Why does the egg sink in fresh water? The egg is
A
more dense than the salt water
B
the same density as both types of water
C
less dense than the fresh water
D
more dense than the fresh water
6) Why is it easier to float on the Great Salt Lake than a fresh water lake? Your body is
A
warmer than the lake water
B
the same density as the lake water
C
more dense than the lake water
D
less dense than the lake water
7) Why does ice float on water?
A
it is less dense than water
B
it is harder than water
C
it is lighter than water
D
it is colder than water
8) Which is the correct formula for density?
A
Mass divided by volume
B
Volume divided by mass
C
Volume times mass
D
Mass times weight
9) If the mass of a cube were 48 g, and its volume 24 cm3, what would its density be?
A
2 g/ cm3
B
4 g/cm3
C
6 g/cm3
D
0.5 g/ cm3
10) 90 mL of salt water has a mass of 120 g. What is the density of the salt water?
A
1.3 g/mL
B
9.0 g/mL
C
.75 g/mL
D
3.0 g/mL
*select an answer for all questions
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