CW 4 Term 3 - Physics

A student investigates a pendulum. He measures the time for the pendulum to complete 20 oscillations. He repeats the experiment three more times. The readings are shown.

What is the average period of the pendulum?

• 0.88 s

• 0.92 s

• 17.6 s

• 18.4 s

The diagram shows a speed–time graph for a moving object.

Which statement describes the motion of the object?

• The speed of the object is increasing with constant acceleration.

• The speed of the object is increasing with an acceleration that is not constant.

• The speed of the object is decreasing with constant deceleration.

• The speed of the object is decreasing with a deceleration that is not constant.

A tennis ball falls from the upstairs window of a house.

What can be said about the acceleration of the ball if air resistance is ignored?

• It depends on the density of the ball.

• It depends on the mass of the ball.

• It increases as the ball falls.

• It stays the same as the ball falls.

The mass of a full bottle of cooking oil is 1.30 kg. When exactly half of the oil has been used, the mass of the bottle plus the remaining oil is 0.90 kg.

What is the mass of the empty bottle?

• 0.40 kg

• 0.50 kg

• 0.65 kg

• 0.80 kg

A student carries out an experiment to find the density of a rock.

• A

• B

• C

• D

The diagrams show four appliances and their power ratings.

Which appliance transfers the most energy per second?

• A

• B

• C

• D

Which properties does a liquid have?

• A

• B

• C

• D

In the diagrams, the black circle represents a smoke particle in air.

Which diagram shows a likely path that the particle takes because of Brownian motion?

• A

• B

• C

• D

Which name is given to the change in volume of a gas when it is heated at constant pressure?

• thermal capacity

• thermal conduction

• thermal energy

• thermal expansion

Some ice is slowly heated and its temperature is measured. A graph is plotted of temperature against time.

Which row describes what happens to the thermal energy and to the temperature in section X?

• A

• B

• C

• D