P6 Science Revision 6 (Physical Science)

The diagram shows a cylinder and a plunger. Ahmad filled the cylinder with some water as shown.

Why is Ahmad able to push the plunger downwards without air or water escaping?

• air has weight

• air occupies space

• air has no definite shape

• air has no definite volume

The diagram shows the change of state of water.

What are processes X and Y?

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Aisha conducted an experiment by heating substance P. At the start, P was a solid at 30°C. After 15 minutes of heating, P reached a temperature of 100°C as shown.

Based on Aisha's experiment, which one of the following is possible?

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A ball tied to a string was released. It swung and hit the plastic bottle. The bottle fell down.

Which of the following shows the correct conversion of energy?

• kinetic energy of ball → potential energy of ball → kinetic energy of bottle

• potential energy of ball → kinetic energy of ball → kinetic energy of bottle

• kinetic energy of ball → kinetic energy of bottle → potential energy of bottle

• potential energy of ball → potential energy of bottle → kinetic energy of bottle

Which of the following is a possible effect on the water cycle when the temperature of the environment increases?

• Condensation of water vapour decreases resulting in more rain.

• Condensation of water vapour increases resulting in less clouds.

• Evaporation of water increases resulting in more rain.

• Evaporation of water decreases resulting in less water vapour in the air.

Two magnets A and B were placed close together with their north poles as shown.

When B was released, it moved along the surface of the floor.

Which of the following shows the direction of the magnetic force acting on A and the direction of frictional force acting on B?

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An engineer set up a system using light bulb P and alarm Q to alert him when the temperature of an oven is too high. He used a metal rod that expands easily when temperature increases.

The table shows his results at different temperatures.

Which of the following is his set-up?

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Bulbs A, B, C D were connected in a circuit hidden in a wooden box shown below. All the light bulbs lit when the circuit was closed.

Melissa removed one light bulb from the circuit each time and observed what happened to the rest of the light bulbs. Her observations are recorded in the table.

Which of the following correctly shows the circuit hidden in the wooden box?

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Sulaiman placed two empty identical containers, K and M, both initially at room temperature on a table. He poured 500 cm³ of boiling water into container K and 250 cm³ of boiling water into container M.

The temperatures of water in K and M were recorded every minute for some time.

Which one of the following is the correct graph for his results?

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A compass has a small magnet that can rotate freely as shown.

Four bar magnets were arranged such that they were attracted to one another. A compass was then placed near end P and the direction of the compass needle is as shown.

What would be the direction of the needle when the compass was placed at Q?

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