6 - Unit 3, Section 4 - Day 1

Types of Waves

Unit 3, Section 4

Open Ended

Think-Pair-Share: State two differences between transverse waves and longitudinal waves.

• In longitudinal waves:

  • The wave moves in the same direction of energy transfer

  • They must move through a medium

Let's Review Longitudinal Waves!

• Acoustic Waves - also called sound waves

• Seismic Waves - responsible for earthquakes

• Both are longitudinal waves

Acoustic Waves and Seismic Waves

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• Longitudinal waves travel at a constant speed as long as they're traveling through the same medium

• What happens if they move to a different medium?

Medium and Wave Speed

Multiple Choice

In which of the three phases of matter are the atoms and molecules packed the closest together (which has the highest density)?

• Gas

• Liquid

• Solid

Multiple Choice

True/False: longitudinal waves must have a medium to travel.

• True

• False

Reorder

Order the following states of matter in order from the one in which longitudinal waves move the fastest to the slowest.

• Solid

• Liquid

• Gas

1

2

3

• 1
• 2
• 3

Wave Speed and States of Matter

• Acoustic waves and sound waves are longitudinal waves

• They must move through a medium

• They move the fastest through the most dense medium (solids)

Review