Standing Waves

Sound is a _________ wave.

• longitudinal

• transverse

Waves that reach the end of a path and then move back along the same path are said to be __________.

• refracted

• diffracted

• reflected

When 2 waves of equal frequencies traveling in opposite directions meet, they produce a pattern that is a wave that appears to not move, only the amplitude changes.  These are called______

• standing waves

• sitting waves

• stadium waves

Points of a standing waves that don't move are called____, and the points with maximum amplitude displacement are called ____.

• antinodes, nodes

• nodes, antinodes

In your own words: what are nodes and anti-nodes?

Make a prediction: What and how will having 2 loose ends of your string (or two own ends of a tube) do to your harmonics and frequencies?

Make a prediction: how will the concepts and equations for a pipe with one closed end (a string with a fixed end) work?

What happens to a wave when it hits a fixed boundary?