I have two answeres that seem to be correct, but one of them has to be wrong. Which is right?
Ultraviolet radiation from a star
a. will not penetrate Earth's atmosphere and reach the ground
b. has a wavelength that is shorter than the x-rays emitted by the star.
2007-03-07 06:39:45 · 5 answers · asked by nicky 1 in Science & Mathematics ➔ Astronomy & Space
Actually neither is right. UV will penetrate the atmosphere. That's how you get sunburned and make vitamin D. X rays are shorter thna UV light.
2007-03-07 06:43:54 · answer #1 · answered by Gene 7 · 3⤊ 0⤋
The MOST correct answer is a. will not penetrate Earth's atmosphere and reach the ground. Most UV light from stars/the sun is absorbed by the ozone layer. However, the wavelength of UV light is longer than that of x-rays, not shorter, so that (second) answer is definitely wrong.
2007-03-07 14:50:04 · answer #2 · answered by indiana_jones_andthelastcrusade 3 · 0⤊ 0⤋
The sun is a star and we know UV rays give you sun burn.
A star also emits UV rays.
Consider; the intensity drops off with square of the distance
Consider; 93 million miles compared to 4 light years.
Then there is the diameter of the sun compared to the point area of a star.
You won't need sunscreen.
2007-03-07 17:48:25 · answer #3 · answered by Billy Butthead 7 · 0⤊ 0⤋
A is probably close to correct. Much of the UV light would be absorbed by the Ozone layer in the atomosphere.
B is wrong.
2007-03-07 14:50:05 · answer #4 · answered by Ernie 4 · 0⤊ 0⤋
X rays are far more powerful (shorter) than UV. Most UV is blocked by our atmosphere.
2007-03-07 14:46:26 · answer #5 · answered by Anonymous · 1⤊ 0⤋