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Worksheet 3.2 The Electromagnetic Spectrum

Use the following 2 images to answer questions below
Figure 1 - EMR spectrum
Figure 2 - Line spectrum of Carbon, Helium and Hydrogen

Question 1

Short answer
The light produced by a red neon sign is due to the emission of light by excited neon atoms. Qualitatively describe the spectrum produced by passing light from a neon lamp through a prism.

Question 2

Short answer
How fast does light travel?

Question 3

Short answer
Rank the following types of electromagnetic radiation from lowest to highest Energy:

UV
Microwave
Red light
Orange light
Radio Waves
X-rays

Question 4

Short answer
Rank the following types of electromagnetic radiation from lowest to highest wavelength:

UV
Microwave
Red light
Orange light
Radio Waves
X-rays

Question 5

Short answer
You might think that microwave radiation would be harmful to humans because you know that putting food into a microwave oven heats it up.  However, microwave radiation is all around us and is, in fact, used for cell phone communication.  Explain how low-energy microwaves heat up food in a microwave oven.

Question 6

Short answer
Give an example of the energy carried by an electromagnetic wave.

Group 7

Part of the light passing through the air is scattered in all directions by the molecules comprising the atmosphere. The wavelengths of visible light are larger than molecular sizes, and the scattering is strongest for wavelengths of light closest to sizes of molecules.
(a) Which of the main colors of light is scattered the most?

Question 7a

Short answer
(a) Which of the main colors of light is scattered the most?

Question 7b

Short answer
(b) Explain why this would give the sky its familiar background color at midday.

Question 8

Short answer
What property of light corresponds to loudness in sound?

Group 9

For the following questions please refer to Figure 2 - Line spectrum:

Question 9a

Short answer
Why are they different?

Question 9b

Short answer
Why are they not a continuous series of colors (ROYGBIV)?

Question 10

Short answer
How are light emission spectra used in the field of Astronomy?

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