1.(a) What is an electromagnetic wave? (b) How fast does it travel 2.List the si

Question

1.(a) What is an electromagnetic wave?

(b) How fast does it travel

2.List the six main regions of the electromagnetic spectrum, from longest to shortest wavelength.

3. Why do you suppose that humans only “see” such a tiny part of the EM spectrum?

4. (a) Which three regions of the spectrum dominate solar radiation?

   (b) Which single region dominates?

5. (a) What is ozone?

(b) Why is ozone important to us?

6. What are the two major greenhouse gases?

7. What property classifies certain gases as “greenhouse gases”?

8. Why do scientists think that climate change is affected by human behavior?

9. What types of changes in human behavior would be necessary to begin reversing climate change?

10. Why, specifically, does physics have a role in the investigation of climate change?

Explanation / Answer

here,

Question A:
Electromagnetic waves are waves which can travel through the vacuum of outer space.
They simply does not doen't require medium to travel, as compared to mechanical waves

Electromagnetic waves are created by the vibration of an electric charge. This vibration creates a wave which has both an electric and a magnetic component. so they transports its energy through a vacuum at a speed of 3.00 * 10^8 m/s( which is also known vaslue for speed of sound in vaccum)

Question B:
Radio
microwave
infrared
visible (red, orange, yellow, green, blue, violet)
ultraviolet
x-ray

Question 3:
as the light is detected by "rod" and "cone" cells in eye. Each cell can only see certain colors of light, and humans seem to only have developed cells that can only see the "visible" part of the spectrum.

Question 4:
A.) Visible rays, infrared rays, Ultravoilet rays
B.) Visible single region dominates solar radiation

Question 5:
A) Ozone (O3) is a highly reactive gas composed of three oxygen atoms.
It is both a natural and a man-made product that occurs in the Earth's upper atmosphere (the stratosphere) and lower atmosphere (the troposphere).

B) Ozone helps in replenisihing atmosphere, which in turn prevent's harmful radiation like UV rays to reach earth surface.

Question 6:
Water vapour and carbon dioxide are two main greenshouse gases

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