2. What is Physical Science?
Forces and motion
Waves
Heat and energy
Chemistry!
Physics!

3. Waves

4. A medium is a substance or material which carries the wave
What is a wave?
A disturbance that travels through a medium from one location to another location
A medium is a substance or material which carries the wave

5. Longitudinal
Vibrates parallel to (in the same direction of) wave travel
sound waves
AKA compressional waves
the other end of the medium without the actual movement of matter
Animation courtesy of Dr. Dan Russell, Kettering University

6. Animation courtesy of Dr. Dan Russell, Kettering University

7. Vibrates perpendicular (at right angles) to the wave travel
Transverse
Vibrates perpendicular (at right angles) to the wave travel
Electromagnetic waves
Animation courtesy of Dr. Dan Russell, Kettering University

8. Water Waves A combination of longitudinal & transverse
Animation courtesy of Dr. Dan Russell, Kettering University

9. Electromagnetic Waves
Wave which is capable of transmitting its energy through a vacuum (i.e., empty space)

10. Mechanical Waves
Are NOT capable of transmitting its energy through a vacuum (space)
Require a medium in order to transport their energy from one location to another
Examples: any type of wave that isn’t electromagnetic

11. Mechanical Waves
Waves traveling through a solid medium can be either transverse waves or longitudinal waves
Waves traveling through a fluid (such as a liquid or a gas) are always longitudinal waves

12. Draw a diagram of a wave. Label the parts.

13. Definitions Wavelength –
distance between two crests or troughs
Frequency – the number of waves that pass a point in one second
Long wavelengths have low frequencies
Short wavelengths have high frequencies
Amplitude (wave height) – the distance from the middle of a wave to the crest or trough
Crest- top of wave
Trough- bottom of wave