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Physics: Looking Into Space
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Questions in this quiz (7)
1How do Astronomers find the distance to stars?
- AParallax and Brightness.
- BThe Atmosphere absorbs a bit of light coming from space.
- CIt makes it hard to see dim objects.
2How can Astronomers use Parallax to measure the distance of stars?
- AAstronomers take pictures of the sky six months apart (When Earth is at opposite sides of its orbit). The Apparent movement of the star lets you work out how far it is. The further away it is, the less it appears to move. So stars REALLY far away won't seem to move at all.
- BBrighter ones would be closer to us, and Dimmer ones would be further away. But this isn't very reliable as brightness of a planet varies, but Astronomers know how much radiation a star emits so they can figure out its distance with brightness.
3How can Astronomers use Brightness to measure the distance of a Star?
- ABrighter ones would be closer to us, and Dimmer ones would be further away. But this isn't very reliable as brightness of a planet varies, but Astronomers know how much radiation a star emits so they can figure out its distance with brightness.
- BAstronomers take pictures of the sky six months apart (When Earth is at opposite sides of its orbit). The Apparent movement of the star lets you work out how far it is. The further away it is, the less it appears to move. So stars REALLY far away won't seem to move at all.
4Why is the Earth's atmosphere an issue?
- AThe Atmosphere absorbs a bit of light coming from space.
- BIt makes it hard to see dim objects.
- CThe Hubble Space Telescope has been built, in Space.
5Why is Light Pollution an Issue?
- AIt makes it hard to see dim objects.
- BThe Hubble Space Telescope has been built, in Space.
- CThe Atmosphere absorbs a bit of light coming from space.
6Has anything been done to counteract these issues?
- AThe Hubble Space Telescope has been built, in Space.
- BLight takes some time to reach us. e.g. The Sun's radiation reaches us in 8 Minutes, so we see it as it was 8 Minutes ago. The Nearest star to us is 4.2 Light years away, so we see it as it was 4.2 years ago.
7Why do we see things in space as they were in the past?
- ALight takes some time to reach us. e.g. The Sun's radiation reaches us in 8 Minutes, so we see it as it was 8 Minutes ago. The Nearest star to us is 4.2 Light years away, so we see it as it was 4.2 years ago.
- BIt makes it hard to see dim objects.
- CThe Atmosphere absorbs a bit of light coming from space.
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- GCSE Physics (Core Physics) Quiz on Physics: Looking Into Space, created by Blgr64 on 25/04/2015.
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- Blgr64
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- English
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