Mastery Check 7-7 (B)

Mastery checks are pledged activities. You may ONLY use: a calculator. No assistance from notes, friends, the internet, etc.

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All electromagnetic waves have a frequncy of 3 \times 10^{8} Hz

Rank each wave type from lowest frequency to highest frequency:

1. UV rays
2. Microwaves
3. Visible light waves
4. X rays

Light waves travel through a vacuum (empty space) so they don't have a medium

A wave of visible light has a frequency of 5.2 \times 10^{14} Hz. Calculate the wavelength of the wave, and say which color it is:

While on Burch, you see a lightning bolt flash across the sky, and then hear the thunder a few seconds later. The next day, you hike over to the spot the lightning struck and find that it was 3000 m away from where you were when you saw it.

If the speed of light is 3 \times 10^8 m/s, calculate how much time passes between the lightning bolt hitting the ground and the light from the bolt traveling to your eyes.

While on Burch, you see a lightning bolt flash across the sky, and then hear the thunder a few seconds later. The next day, you hike over to the spot the lightning struck and find that it was 3000 m away from where you were when you saw it.

If the speed of sound is 320 m/s, calculate how much time passes between the lightning bolt hitting the ground and the sound of thunder traveling to your ears.