Mass, Weight and Density

Three discs are cut from the same sheet of steel. They are different shapes but they all have the same mass.

Which object has the greatest density?

• the disc

• the L-shape

• the square

• all have the same density

The diagram represents a block of wood resting on a horizontal plane. In which direction does the block's weight act?

• A

• B

• C

• D

A cube with sides 2.0 cm long is made from a material of density 8.0 g/cm³.

What is the mass of the cube?

• 1.0 g

• 4.0 g

• 16 g

• 64 g

Four students make statements about mass and weight.

Which statement is correct?

• Mass is a force, measured in kilogram.

• Mass is a force, measured in newton.

• Weight is a force, measured in kilogram.

• Weight is a force, measured in newton.

Which statement about mass is correct?

• It decreases as it moves upwards.

• It is equal to the weight of the object.

• It is measured in newton.

• It is the same at any place.

The following experiment was set up. Which of the following is in ascending order of density?

• water, mercury, oil

• mercury, water, oil

• oil, water, mercury

• oil, mercury, water

A solid triangle is made from copper is cut into 3 pieces P, Q and R.

Which piece has the greatest density?

• P only

• Q only

• P and Q only

• all pieces have the same density