Chapt 15 Waves

Question 1

Constant frequency

Answer 1

A wave changing mediums

Question 2

Medium change and speed change in sound waves or light waves

Answer 2

Speed of sound decreases as medium density decreases

Speed of light decreases as medium density increases

Question 3

Electromagnetic spectrum

Answer 3

Frequency and energy increases in this order

Radio waves
Microwaves
Infrared
Visible light (ROYGBIV)
Ultraviolet
X-rays
Gamma rays

Question 4

Doppler effect

Answer 4

If the sound source is moving towards the observer, the observer is hearing a higher frequency.

If the sound source is moving away, the observer hears a lower frequency.

Question 5

Constant wave speed

Answer 5

Wave travels in only one medium