Diagnostic Test 9A1 CS Physics

A rule is used to measure the internal diameter of a pipe.

What is the internal diameter of the pipe?

• 1.6 cm

• 1.8 cm

• 2.0 cm

• 2.6 cm

What describes the density of a material?

• the amount of matter in the material

• the mass per unit volume of the material

• the pull of gravity on the material

• the volume per unit mass of the material

What happens when a metal bar is heated?

• The distance between the molecules increases, making the bar longer.

• The molecules get larger, making the bar longer.

• The molecules vibrate more quickly, making the bar denser.

• The speed of the molecules increases, making the bar thinner.

How much work is done in lifting a mass of 90 g vertically through a distance of 10 m?

(gravitational field strength is 10 N / kg.)

• 0.9 J

• 9 J

• 90 J

• 900 J

The diagram shows a radiator being used to heat a room.

Which arrow shows the movement of the air around the room?

• A

• B

• C

• D

50cm³ of a liquid has a mass of 40g.

What is the density of the liquid?

• 0.8 g/cm³

• 1.25 g/cm³

• 10 g/cm³

• 90 g/cm³

A beam is balanced using two objects, P and Q, at each end.

The pivot is at the centre of the beam.

Which statement is correct?

• P and Q have different masses and different weights.

• P and Q have different masses but the same weight.

• P and Q have the same mass and the same weight.

• P and Q have the same mass but different weights.

On a cold day, a girl notices that the metal case of her mobile phone feels colder to touch than the glass screen.

Which statement explains her observations?

• Metal is a better conductor of heat than glass.

• Metal is denser than glass.

• Metal radiates heat less than glass.

• The metal is thicker than the glass.

Which instrument is used to measure the volume of an irregularly shaped object?

• measuring cylinder

• meter rule

• micrometer

• vernier calipers

To protect a polished table, a cork mat may be put on the table underneath a mug containing hot liquid.

• Cork is a good radiator.

• Cork is a good conductor.

• Cork is a poor conductor.

• Cork is a poor radiator