3.) What is wavelength? |
|
Wavelength is the physical distance between a point on a wave and the same point on the next wave over. |
| |
4.) What is a crest? |
|
A crest is the top of a wave. |
| |
5.) What is amplitude? |
|
Amplitude is the distance from the rest position center of the wave to either the crest or the trough. |
| |
6.) What is a trough? |
|
A trough is the bottom of the wave. |
| |
7.) What is compression? |
|
A compression is the part of a longitudinal wave where the density of the medium is at its greatest; the “bunched up” areas. |
| |
8.) What is rarefaction? |
|
A rarefaction is the part of a longitudinal wave where the density of the medium is at its least; the “spaced out” areas. |
| |
9.) What does frequency measure? |
|
Frequency measures the number of waves that occur within one second. |
| |
11.) How does a particle (like the string on the slinky) move in a transverse wave? |
|
The particle moves perpendicular to the direction of energy movement. |
| |
12.) How does a particle (like the string on the slinky) move in a longitudinal wave? |
|
The particle moves parallel to the direction of energy movement. |
| |
13.) What moves or travels along a wave? |
|
Energy moves along the wave. |
| |
14.) How are wavelength and frequency related? |
|
Wavelength and frequency are inversely related: as the wavelength decreases, the frequency increases. |
| |
19.) Describe two examples of transverse waves. |
|
Ocean waves and visible light (or any other form of radiant energy) |
| |
20.) Describe two examples of longitudinal waves. |
|
Sound waves and earthquake shock waves. |
| |
21.) What is the electromagnetic spectrum? |
|
The set of all forms of radiant energy. |
| |
23.) What type of energy is the electromagnetic spectrum? |
|
The EM spectrum is all radiant energy. |
| |
24.) How fast does electromagnetic radiation travel? |
|
It all travels at the speed of light, around 300,000 km/s |
| |
26.) What types of electromagnetic radiation can humans detect? |
|
Humans can detect visible light through our eyes, and infrared radiation through our skin. |
| |
Name all the levels of electromagnetic spectrum in order |
|
Radio waves, microwaves, infared,visible light, ultraviolet, x-rays and gamma rays |
| |
27.) What types of electromagnetic radiation are harmful for humans? Why are they harmful? |
|
Ultraviolet, X-rays, and gamma rays can all cause cell mutations and cell death. UV can cause sunburn, and cataracts in the eyes. |
| |
28.) Can electromagnetic radiation travel through outer space? Why or why not? |
|
EM radiation can travel hrough space because they are all transverse waves which do not require a medium. |
| |
29.) In what order do the colors of visible light refract when it travels through a prism? Why does it always refract in this order? |
|
Visible light refracts into red-orange-yellow-green-blue-indigo-violet. The order is always the same because they appear in order by wavelength from longest to shortest. |
| |
30.) What type of electromagnetic radiation has the least energy? The most energy? |
|
Radio waves have the least energy, while gamma rays have the greatest. |
| |
31.) What type of electromagnetic radiation has the longest wavelength? The shortest wavelength? |
|
Radio waves have the longest wavelength, while gamma rays have the shortest. |
| |
32.) What type of electromagnetic radiation has the shortest frequency? The highest frequency? |
|
Radio waves have the lowest frequency, while gamma rays have the highest. |
| |