Sound Needs a Medium to Travel Quiz

When an object vibrates, it sets the molecules of the medium around it in ………………….. motion.

• vibrational

• rotational

• translational

• oscillatory

Sound is produced due to the ………………….. of an object.

• vibration

• rotation

• expansion

• compression

Sound cannot travel through ………………….. .

• vacuum

• water

• air

• solid

Sound travels in air only when ………………….. .

• the air particles and the disturbance produced in the air travel from one place to another

• the air is completely still and undisturbed

• there is no medium for the sound to travel through

• the temperature of the air is below freezing

In which medium does sound travel the fastest?

• Air

• Water

• Wood

• Steel

In which medium does sound travel the slowest?

• Air

• Water

• Wood

• Steel

Sound can travel through...

• solids, liquids and gases

• solids, liquids and vacuum

• solids, gases and vacuum

• liquids, gases and vacuum

The physical quantity, which gets transmitted when sound waves travel through a medium is...

• matter

• energy

• wavelength

• velocity

The speed of sound waves will be the maximum in...

• sea water

• dry air

• vacuum

• ground glass

On the moon, the sound produced by an astronaut cannot be heard by another astronaut because...

• the moon’s gravity is less than that of the earth

• the moon has no air

• the size of the moon is smaller than that of the earth

• the second astronaut’s ears are covered by the space suit