1458782
Description
Flashcards by Kristen_May, updated more than 1 year ago
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Created by Kristen_May
over 9 years ago
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| Question | Answer |
| Is stuff in space evenly spaced out? | No |
| What do you use to find distance/locations? | Triangle math and Geometry |
| Parallax | How much things appear to move from two viewpoints compared to a refernce point |
| Triangulation | 1.Use scale diagrams of traiangles 2. Often base line is 2 AU's |
| Distances 1. Small 2. Medium 3. Large | 1. Km- Planets, stars 2. A.U's- Solar system 3. Light years- Outerspace |
| What did they often use as reference points? | Cepheids, pulsars (Change brightness) |
| What is it called when stars group together? | Cluster |
| What is a smaller cluster called? | Open cluster |
| What is a larger cluster called? | Globular cluster |
| What are Galaxies made of? | Star clusters, planets, nebulas...ect... |
| What are the 3 types of Galaxies? | 1. Elliptical 2. Spiral 3. Irregular |
| What is the Doppler shift? | 1. It shows direction and speed of moving object 2. Changes length of voques-Chnage colour 3. If the waves move towards you they are a Blue shift, away and they are a Red shift |
| Who found out that the universe was expanding? | Hubble |
| Quasars | 1. Huge, high energy, galaxy centers 2. Nothing in the universe makes more energy 3. Possibly made from Glaxies colliding 4. On the edge of the universe |
| Gamma Ray Burst | 1. Releases more energy in a second than the sun will in it's entire life 2. Possibly parts of a forming black hole 3. From supernovas or when stars collide |
| Missing Mass | 1. The universe does not have enough mass to work the way it does 2. A particle called the neutrino was found to fill the universe, Comes from the big bang 3. There is also dark matter but we don't know how do detect it yet |
| What are the top 4 things that affect the earth? | 1. Space debris 2. Stars 3. Moon 4. Sun, light, and heat |
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