# 7th Grade Matter Review Utah #1: Question Preview (ID: 7243)

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Which would you use to determine the mass of an object?
a) Meter stick
c) Bathroom scale
d) Triple beam balance

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 volume than the lighter one
b) it has more mass per unit volume
c) it has larger chunks of vegetables in it
d) it is less dense than the lighter one

Which would you use to find the volume of a rectangular cube?
a) Meter stick
c) Bathroom scale
d) Triple beam balance

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) 4 mL
b) 7 mL
c) 47 mL
d) 87 mL

Why does the egg sink in fresh water? The egg is
a) less dense than the fresh water
b) more dense than the fresh water
c) more dense than the salt water
d) the same density as both types of water

Why is it easier to float on the Great Salt Lake than a fresh water lake? Your body is
a) less dense than the lake water
b) more dense than the lake water
c) the same density as the lake water
d) warmer than the lake water

Why does ice float on water?
a) it is colder than water
b) it is less dense than water
c) it is harder than water
d) it is lighter than water

Which is the correct formula for density?
a) Volume times mass
b) Mass times weight
c) Volume divided by mass
d) Mass divided by volume

If the mass of a cube were 48 g, and its volume 24 cm3, what would its density be?
a) 0.5 g/ cm3
b) 2 g/ cm3
c) 4 g/cm3
d) 6 g/cm3

90 mL of salt water has a mass of 120 g. What is the density of the salt water?
a) .75 g/mL
b) 1.3 g/mL
c) 3.0 g/mL
d) 9.0 g/mL

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