Electromagnetic Wave Behavior and Calculations

If you buy sunglasses in a store, you can be sure that they are polarized when one pair of sunglasses is placed in front of another and rotated in the plane of the body and

• the light passing through the sunglasses will be blocked at two positions due to refraction of light.

• the light passing through the sunglasses will be blocked at two positions due to reflection of light.

• the light passing through the sunglasses will be blocked at two positions due to the polarization of light.

• the light passing through the sunglasses will be blocked at two positions due to the bending of light waves.

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Explain in terms of distance and the speed of light why it is currently very unlikely that humans will visit planets that circle stars other than our Sun.

• The spacecrafts used for travel are very heavy and thus very slow.

• Spacecrafts do not have a constant source of energy to run them.

• If a spacecraft could attain a maximum speed equal to that of light, it would still be too slow to cover astronomical distances.

• Spacecrafts can attain a maximum speed equal to that of light, but it is difficult to locate planets around stars.

What are the units of frequency?

• m/s
• s
• Hz
• m

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Which wave has a greater frequency?

• A

• B

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High frequency waves have _________ wavelengths.

• varying
• long
• the same
• short

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Look carefully at the waves.  Which carries the most energy?

• microwave
• infrared
• ultraviolet
• x-ray

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Which type of wave has the highest frequency?

• gamma ray
• x ray
• infrared
• radio waves

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Light is a form of 

• energy
• radiation
• reflection

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What are the 3 primary colors of light?

• red, green, blue

• yellow, orange, violet

• red, black, green

• magenta, cyan, indigo

Which color has the longest wavelength?

• red
• orange
• blue
• violet

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