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Astronomy StudyGuide
| Question | Answer |
|---|---|
| What is the definition of rotation? | turning or spinning on an axis |
| A revolution is the action of one object moving completely around another in an ___________ _______. | Orbital Path |
| What are the 2 most common elements in the universe? | Hydrogen and Helium |
| Which two moon phases are waxing? | Crescent and Gibbous |
| Which two moon phases are waning? | Crescent and Gibbous |
| Which side is the moon lit up on during the waxing phase? | Right Side |
| Which side is the moon lit up on during the waning phase? | Left Side |
| What are the moon phases in order starting from New Moon? | Waxing Crescent, First Quarter, Waxing Gibbous, Full Moon, Waning Gibbous, Third Quarter, Waning Crescent |
| It takes the moon _____ days to revolve around the Earth one time. | 27.3 |
| How long does it take the moon to go from new moon to new moon (Lunar Cycle)? | 29.5 days |
| Inner Planets - Rocky and solid surfaces Smaller in size than the outer planets Referred to as "____________________ _____________" | Terrestrial Planets |
| Outer Planets - Do not have rocky or solid surfaces Larger in size than the inner planets Referred to as "_______ _____________" | Gas Giants |
| Name the planets in order from first to fourth of Inner Planets. | Mercury, Venus, Earth, Mars |
| Name the planets in order from first to fourth of Outer Planets. | Jupiter, Saturn, Uranus, Neptune |
| "A large, potato-shaped object in space that orbits the Sun - smaller than planets" is the definition of an Asteroid, Meteoroid, or Comet? | Asteroid |
| "Chunks of ice and dust travelling through space" is the definition of Asteroid, Meteoroid, or Comet? | Comet |
| "A rocky object that orbits the sun" is the definition of Asteroid, Meteoroid, or Comet? | Meteoroid |
| What are the three components of a comet? | Nucleus, Coma, Tail |
| True or false: The tail of a comet is pushed toward the comet | False |
| What causes the tail of a comet? | Solar Winds |
| 90% of known stars are in the ______ _____________ stage of their life. | Main Sequence |
| a huge cloud of dust and gas in space held together by gravity - referred to as "Star Nurseries" | Nebula |
| "the stage after main sequence for a small to medium mass star; fuel begins to run out" is the definition of Red Giant, Planetary Nebula, White Dwarf, or Black Dwarf | Red Giant |
| "a dead star that no longer gives off light or heat" is the definition of Red Giant, Planetary Nebula, White Dwarf, or Black Dwarf | Black Dwarf |
| "a ring shaped nebula formed by an expanding shell of gas around an aging star" is the definition of Red Giant, Planetary Nebula, White Dwarf, or Black Dwarf | Planetary Nebula |
| "a star that has exhausted all of its nuclear fuel; planet sized and very dense" is the definition of Red Giant, Planetary Nebula, White Dwarf, or Black Dwarf | White Dwarf |
| Red Supergiant is the first, second, or third stage of Extremely High Mass stars | First |
| Which part of the sun is visible? | The Photosphere |
| What is the outermost layer of the Sun? | The Corona |
| A stream of charged particles released from the upper atmosphere of the Sun are ____________ _____________. | Solar Winds |
| What is a dark, planet-sized regions that appear on the "surface" of the Sun? | Sunspot |
| What is the source of Sun's energy? | Nuclear Fusion |
| The magnitude (brightness) of a celestial object as it would be seen at a standard distance is called ___________ _______________ | Absolute Magnitude |
| The magnitude of a celestial object as it is actually measured from the earth is called _____________ _______________ | Apparent Magnitude |
| Which star is among the most massive and brightest of all stars? | Red Supergiant |
| Which star is an extremely bright explosion of a star? | Supernova |
| The definition "a gravitational field so strong that not even light can escape" describes what object in the universe? | Black Hole |
| A stars ________ causes stars to have different life cycles. | Mass |
| A protostar must start what process to be considered a star? | Nuclear Fusion |
| Which galaxy has a spiral shape? | The Milky Way |
| A smooth, circular or oval shape describes what kind of galaxy? | An Elliptical Galaxy |
| The Milky Way is located on the ___________ ______ of the galaxy - not in the center of the galaxy. | Orion Arm |
| A random, scattered type describes what kind of galaxy? | Irregular Galaxy |
| What is at the center of a galaxy? | A Black Hole |
Created by:
scott.sowder
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