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11 Cards in this Set
- Front
- Back
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Which of the following wavelengths of light can be easily observed by a telescope located on Earth's surface? gamma ray X ray ultraviolet radio all of the above none of the above |
Radio. |
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Some telescopes are placed in space above Earth's atmosphere primarily for which of the following reasons? |
The light from stars can be blocked by Earth's atmosphere |
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The drawing below illustrates the amount that different wavelengths of light are able to penetrate down through Earth's atmosphere. The shaded regions are used in this drawing to depict different layers in Earth's atmosphere. Notice that the atmosphere can be completely transparent to light at some wavelengths (all three lines passing through the atmosphere to the surface) and yet can also completely absorb other wavelengths of light (all three lines stopping in the atmosphere before reaching the surface). Which, if any, of the different wavelengths of light shown in the image are able to completely penetrate Earth's atmosphere and reach the surface (you may need to choose more than one answer)? Gamma X ray UV Visible Infrared Radio All types None |
Visible and Radio |
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The drawing below illustrates the amount that different wavelengths of light are able to penetrate down through Earth's atmosphere. The shaded regions are used in this drawing to depict different layers in Earth's atmosphere. Notice that the atmosphere can be completely transparent to light at some wavelengths (all three lines passing through the atmosphere to the surface) and yet can also completely absorb other wavelengths of light (all three lines stopping in the atmosphere before reaching the surface). Which, if any, of the different wavelengths of light shown in the image are completely absorbed in the Earth's atmosphere and never reach the surface or even a mountaintop (you may need to choose more than one answer)? Gamma X ray UV Visible Infrared Radio All None |
Gamma and X ray |
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The drawing below illustrates the amount that different wavelengths of light are able to penetrate down through Earth's atmosphere. The shaded regions are used in this drawing to depict different layers in Earth's atmosphere. Notice that the atmosphere can be completely transparent to light at some wavelengths (all three lines passing through the atmosphere to the surface) and yet can also completely absorb other wavelengths of light (all three lines stopping in the atmosphere before reaching the surface). Which, if any, of the different wavelengths of light shown in the image only partially penetrate Earth's atmosphere to reach the surface or a mountain top (you may need to choose more than one answer)? Gamma X ray UV Visible Infrared Radio All None |
UV and Infrared |
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Imagine that you are the head of a funding agency that can afford to build one telescope. Which of the following proposed telescopes would be best to support? |
an ultraviolet telescope in orbit around the Earth |
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The Hubble Space Telescope is famous because it has the largest mirror of any telescope (ground-based or space-based) ever built? |
False |
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Light pollution (for astronomers) refers to light used for human activities that brightens the night sky and hinders astronomical observations. |
True |
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Currently, the largest optical telescopes have mirrors with diameters of approximately |
10 meters |
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Which telescope would collect 100 times more light than a 1-m telescope? |
10-m telescope |
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The angular resolution (how sharply we can see celestial objects) of ground-based telescopes is mostly dictated by |
the "seeing" condition's of Earth's atmosphere. |
