Physic Quiz

A car is moving along a straight, level road, with a constant acceleration.

Which graph shows the motion of the car?

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A car takes 15 minutes to travel along a road that is 20 km long.

What is the average speed of the car?

• 0.75 km / h

• 5.0 km / h

• 80 km / h

• 300 km / h

An empty beaker is placed on a top-pan balance. Some water is now poured into the beaker.

What is the weight of the water?

• 0.044 kg

• 0.168 kg

• 0.0044 N

• 0.44 N

The diagram shows some liquid in a measuring cylinder.

The mass of the liquid is 16 g.

What is the density of the liquid?

• 0.80 g / cm ³

• 1.25 g / cm ³

• 36 g / cm ³

• 320 g / cm ³

Which energy resource is not renewable?

• fossil fuel

• sunlight

• tides

• wind

A wooden wheel can be strengthened by putting a tight circle of iron around it.

Which action would make it easier to fit the circle over the wood?

• cooling the iron circle

• heating the iron circle

• heating the wooden wheel and cooling the iron circle

• heating the wooden wheel but not heating or cooling the iron circle

A liquid is heated and it expands.

How does this lead to the formation of a convection current?

• The density of the heated liquid decreases.

• The density of the heated liquid increases.

• The mass of the heated liquid molecules decreases.

• The mass of the heated liquid molecules increases.

Which metal is used for the core of an electromagnet?

• copper

• iron

• magnesium

• steel

A student measures the potential difference across a device and the current in the device.

Which calculation gives the resistance of the device?

• current $+$ potential difference

• current $\div$ potential difference

• potential difference $\div$ current

• potential difference $\times$ current

In which situation is the wavelength of the wave changed?

• light from the Sun passing from air into water

• radio waves travelling from an Earth satellite to the Moon

• sound reflecting from a wall

• water waves passing through a narrow gap