21. The Doppler effect causes the pitch of a sound to change as a moving source passes by an observer. True or False?
Answer: True
22. Red light has a longer wavelength than blue light. True or False?
Answer: True
23. Red light has a higher frequency than blue light. True or False?
Answer: False
24. The electromagnetic spectrum is the range of all possible frequencies of electromagnetic radiation. True or False?
Answer: True
25. The electromagnetic spectrum includes all of the following except:
Related Topics
a) Radio waves
b) Microwaves
c) X-rays
d) Sound waves
Answer: d) Sound waves
