Unit Test_Measurement

A scientist needs to determine the volume of a small, irregularly shaped rock sample. Only a rule and a

measuring cylinder, partially filled with water, are available.

To determine the volume, which apparatus should the scientist use?

• Neither the measuring cylinder nor the rule

• The rule only

• Both the measuring cylinder and the rule

• The measuring cylinder only

Calculate the density of mercury if 500 cm³

has a mass of 6.0 kg.

• 1.2 g/cm³

• 12.0 g/cm³

• 3.0 g/cm³

• 30.0 g/cm³

A student is trying to find the density of water and of a large, regularly-shaped solid. Which apparatus is

needed to find the density of both?

• Clock, ruler, string

• Balance, measuring cylinder, ruler

• Balance, measuring cylinder, string

• Balance, clock, ruler

What happens to the least dense of two immiscible liquids?

• It rises to the top

• It mixes

• It falls to the bottom

• None of the above

The diagrams show the times on a stopclock at the beginning and at the end of an experiment.

How long did the experiment take?

• 10 s

• 45 s

• 60 s

• 25 s

The diagram shows some liquid in a measuring cylinder. The mass of the liquid is 16 g.

What is the density of the liquid?

• 360 g/cm³

• 320 g/cm³

• 1.25 g/cm³

• 0.80 g/cm³

A geologist places a small rock on the left-hand pan of a balance. The two pans are level as shown when

masses with a total weight of 23N are placed on the right-hand pan. Take the weight of 1.0kg to be 10N.

What is the mass of the small rock?

• 2.3 kg

• 23 kg

• 230 kg

• 2300 kg

A girl uses a rule to measure the length of a metal rod. Because the end of the rule is damaged, she places one end of the rod at the 1 cm mark as shown.

How long is the metal rod?

• 56 mm

• 50 mm

• 46 mm

• 43 mm

A stone has a volume of 0.50 cm3

and a mass of 2.0 g. What is the density of the stone?

• 1.50 g/cm³

• 2.50 g/cm³

• 4.0 g/cm³

• 3.0 g/cm³

A cylindrical can is rolled along the ruler shown in the diagram.

The can rolls over twice. What is the circumference (distance all round) of the can?

• 28 cm

• 14 cm

• 15 cm

• 13 cm