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Astronomy Studies
| Question | Answer |
|---|---|
| What is the action that earth is doing to cause day and night called? | Rotation |
| What is the action causing the earth to go around the sun called? | Revolution |
| What are the 2 most common elements in the universe? | hydrogen, and helium |
| a unit of distance that is equivalent to the distance that light travels in a year | light years |
| what is a gradual increase of the moon called? | waxing |
| what is the gradual decrease of the moon called? | wanning |
| which side of the moon is lit up while it increases | right |
| which side of the moon is lit up while it decreases | left |
| be able to identify the phases of the moon | got it |
| how many days does it take for the moon to have a full revolution? | 27.4 days |
| how many days does it take for the moon to go from new moon, to full moon? | 14 days |
| what are terrestrial planets? | planets with a rocky terrain |
| what are gas giants? | planets that have thick have thick gaseous planets with no solid land. |
| what are inner planets | planets on the inside of the asteroid belt |
| what are outer planets? | planets on the outside of the asteroid belt |
| what are asteroids? | large potato shaped objects made out of rock and metal |
| what is the asteroid belt? | a belt, made of asteroids revolving the sun in the middle of the planets |
| what is the difference between meteors, meteoroids, and meteorites | size, and where they are |
| what are the three parts of a comet? | nucleus, coma and tail |
| what direction does the tail always point at the sun? | the tail always points away from the sun. |
| what causes the tail of a comet? | gas and dust being pushed away due to solar winds |
| what is the photosphere? | the visible part of the surface of the sun, where most of the suns light is emitted from |
| what is the corona? | the corona is the "crown" of the sun |
| what is solar wind? | solar wind is the wind that comes off of the sun |
| what are sunspots? | sunspots are the black spots on the sun, they are typically cooler than the rest of the suns surface, |
| what is the source for the suns energy | nuclear fission |
| what is the difference between absolute magnitude, and apparent magnitude? | absolute magnitude is the stars absolute brightness and visibility, but apparent magnitude is how bright and visible the star is from earth |
| 90% of the stars on the HR chart are__________ _____________ stars. | main sequence |
| what is a nebula? | a nebula is where stars are "born" it is basically a star nursery. |
| what is a main sequence star? | a main sequence star is what 90% of stars in the sky are, basically the stars teen years |
| what is a red giant? | a red giant is the stage that low to average mass stars go through, right after main sequence. |
| what is a red supergiant? | A red supergiant is the stage that high to very high mass stars go through right after main sequence. |
| what is a super nova? | it is basically a star exploding in the sky. |
| what is a black dwarf? | a black dwarf is the last stage of low to average mass stars. |
| what is a black hole? | a giant hole in the galaxy, with a ton of gravity. |
| what causes stars to live different life cycles? | their mass. |
| a protostar must start which process to be considered a star? | nuclear fission |
| what is the milky way? | our galaxy |
| what is an elliptical galaxy? | a galaxy that goes in an ovalish shape |
| what is a spiral galaxy? | a galaxy in a spiral shape |
| what is an irregular galaxy? | a galaxy in any shape other than sprial, or elliptical. |
| what is at the center of a galaxy | black hole |
| why are there 42 questions? | because 42 is the answer to everything. |
Created by:
recces
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