Sound waves

Sound travels faster in:

• Solid

• Liquid

• Gas

• Vaccuum

The three main factors that affect the speed of a sound wave are:

• Amplitude, frequency & loudness.

• Temperature, density & stiffness of a medium.

• Reflection, refraction & diffraction.

Sound travels fatsre in stiffer mediums since:

• The particles are closer to each other.

• The particles are far from each other.

• The particles are free to move in the whole medium.

Astronauts can't speak together in outer space because:

• they have sore throats and can't speak.

• there are no particles in vacuum to carry the sound energy.

• they don't want to bother the aliens.

Sounds are mechanical waves which are created by:

• a screaming lady

• an ambulance siren

• a source of vibration

• an angry crowd of students who got bad grades

A sound wave is a ............. wave.

• Transverse wave

• Longitudinal wave

• Electromagnetic wave