What Are Waves?

A (a)   is a disturbance that transfers energy from place to place.

In science, what is energy defined as?

The material through which a wave travels is called a ________.

Gases (such as air), liquids (such as water), and solids such as rope all act as mediums through which a wave can travel are called (a)   waves.

Not all waves require a medium to travel through.

What are waves that travel without a medium called?

Describe what is happening to the wave and the duck in this picture.

Energy is always required to make a wave.

(a)   waves are produced when a source of energy causes a medium to vibrate.

What are the two types of mechanical waves?