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Stars Test
Science 8th grade
| Question | Answer |
|---|---|
| What does an H-R diagram show? be able to know how to use one also. | The relationship of a star's brightness to its temperature |
| Where do most stars in the universe fit on the H-R diagram? | The main sequence |
| What is the difference between apparent and absolute magnitude? | Apparent is how bright stars appear, and absolute magnitude is their true brightness. |
| How does the color of a star indicate its temperature? | Blue is the hottest, then blue white, then white, then yellow, then orange then red is the coolest. |
| What is parallax? | Apparent shift in star position. |
| What is a real life example of parallax involving your thumb. | If you look at your thumb with your two different eyes, then if will appear to shift. |
| What is the difference between a circle and an ellipse? | An ellipse has two foci |
| What is the formula for the eccentricity of an ellipse? | Distance between foci / length of major axis |
| What is the major axis of an ellipse? | It is the distance across the whole ellipse that crosses through both foci. |
| What are foci of an ellipse? | The two focus points |
| How do scientists classify stars? | They use the color, composition, temperature, size, and brightness |
| What is the difference between apparent and actual motion? | Apparent motion is how far something appears to move, and actual is how something really moves. |
Created by:
Tommybehnke