Multiple Choice
If a light signal and a radio signal were emitted simultaneously from Alpha Centauri, the first to reach Earth would be the
A) radio signal.
B) light signal.
C) both the same time
Correct Answer:
Verified
Correct Answer:
Verified
Q25: Materials generally become warmer when light is<br>A)absorbed
Q26: Glass is transparent to<br>A)infrared light.<br>B)visible light.<br>C)ultraviolet light.<br>D)all
Q27: Sunburns are produced by<br>A)infrared light.<br>B)visible light.<br>C)ultraviolet light.<br>D)all
Q28: The fact that you can see stars
Q29: The fact that light travels only at
Q31: Which travels with the greatest speed in
Q32: The source of all electromagnetic waves is<br>A)changes
Q33: A lunar eclipse occurs when the<br>A)Sun passes
Q34: The natural frequency of the atoms in
Q35: The crescent shapes of spots of light