PSLE Science Physics Topics 4

Question 1

What is the unit used to measure electrical energy consumption at home?

Accepted Answer

Kilowatt-hour

Answer

Watt

Answer

Volt

Answer

Ampere

Question 2

Which of the following materials allows light to pass through completely?

Accepted Answer

Transparent glass

Answer

Cardboard

Answer

Frosted glass

Answer

Aluminium foil

Question 3

What is the effect of increasing the number of batteries in a circuit (connected in series)?

Accepted Answer

The bulb gets brighter

Answer

The bulb gets dimmer

Answer

Nothing changes

Answer

The bulb breaks immediately

Question 4

What type of simple machine is a seesaw?

Accepted Answer

Lever

Answer

Pulley

Answer

Wheel and axle

Answer

Inclined plane

Question 5

What happens to water when it is heated from 0°C to 100°C?

Accepted Answer

It changes from solid to liquid to gas

Answer

It remains as a liquid throughout

Answer

It only melts

Answer

It only boils

Question 6

Which force allows a parachute to slow down a skydiver?

Accepted Answer

Air resistance

Answer

Gravity

Answer

Friction

Answer

Magnetic force