true or false ??
All sound waves need a medium to travel.
Sound travels fastest in a gas like air.
Sound can travel through a vacuum.
Sound travels faster on a warm day than a cold day.
Sound travels faster than light.
True: All sound waves need a medium to travel. Sound waves require a medium such as air, water, or solid objects to propagate.
False: Sound does not travel fastest in a gas like air. Sound waves propagate faster in denser mediums like solids or liquids compared to gases.
False: Sound cannot travel through a vacuum. A vacuum is an empty space devoid of any matter, so there is no medium for sound waves to propagate through.
True: Sound does travel faster on a warm day than a cold day. The speed of sound increases with temperature, so sound waves will travel faster through warmer air compared to colder air.
False: Sound does not travel faster than light. Light travels at a much higher speed than sound, so light waves propagate much faster through a medium compared to sound waves.