Physics MCQ -13

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Physics MCQ -13

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Q:A student measures the volume of a small irregularly-shaped stone.Which apparatus must be used?

1 point

A a measuring cylinder containing water and a ruler only

B a measuring cylinder containing water only

C an empty measuring cylinder and a ruler only

D a ruler only

Clear selection

A car travels at an average speed of 60 km / h for 15 minutes.How far does the car travel in 15 minutes?

1 point

A 4.0 km

B 15 km

C 240 km

D 900 km

Clear selection

Which effect is caused by thermal expansion?

1 point

A a metal surface heating up in direct sunlight

B ice-cream melting on a hot day

C a railway track buckling on a hot day

D ice forming on a pond on a cold day

Clear selection

The density of air is 1.2 kg / m3.A room has dimensions 5.0 m × 4.0 m × 3.0 m.What is the mass of the air in the room?

1 point

A 0.02 kg

B 0.10 kg

C 50 kg

D 72 kg

Clear selection

Which does not transfer useful energy?

1 point

A emitting a sound wave

B measuring a temperature

C passing an electric current

D pushing a box along the floor

Clear selection

Brakes are used to slow down a moving car.Into which form of energy is most of the kinetic energy converted as the car slows down?

1 point

A chemical

B elastic

C thermal

D sound

Clear selection

Which statement gives a complete description of any object that is in equilibrium?

1 point

A There are no forces acting.

B There is no resultant force.

C There is no resultant force and no resultant turning effect.

D There is no resultant turning effect.

Clear selection

Which quantity is a force due to a gravitational field?

1 point

A density

B mass

C weight

D volume

Clear selection

Which statement about the evaporation of a liquid is correct?

1 point

A The least energetic molecules escape from the surface and the temperature of the liquid decreases.

B The least energetic molecules escape from the surface and the temperature of the liquid increases.

C The most energetic molecules escape from the surface and the temperature of the liquid decreases.

D The most energetic molecules escape from the surface and the temperature of the liquid increases.

Clear selection

A test-tube contains 1.0 cm3 of liquid water at 100 °C. The liquid water boils to form 1600 cm3 ofsteam.What is the reason for the large increase in volume?

1 point

A Steam molecules are bigger than water molecules.

B The average distance between the molecules is much greater in the steam.

C The molecules do not move until the water turns into a gas.

D There are more steam molecules than there were water molecules.

Clear selection

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