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Universe & Solar Sys
Universe & Solar System
| Question | Answer |
|---|---|
| What happens to scientific theories as new information is discovered? | They change. |
| Prior to the ______ it was believed that the Earth was the center of the Solar System | 1500's |
| _________ first suggested the ________ or Sun-centered universe | Copernicus, Heliocentric |
| With the use of telescopes, _________ confirmed the Heliocentric system | Galileo |
| What does the Big Bang theory state? | It states that the universe formed through an explosion around 10-15 billion years ago. It also states that the universe is continuing to expand. |
| What star system is our Solar System? | A single star system. |
| What galaxy is our Solar System in? | The Milky Way Galaxy. |
| The Milky Way Galaxy is one of _________ of galaxies in the universe. | Billions |
| What are the three types of galaxies? | Spiral, elliptical, irregular |
| Why do stars seem to be close together? | Because we are so far away from them. |
| Name all the Inner Planets, and why they are classified as such. | Mercury, Venus, Earth, Mars; they are classified because they are close to the sun, smaller, and have rocky surfaces. |
| Name all the Outer Planets, and why they are classified as such. | Jupiter, Saturn, Uranus, Neptune; larger, farther away from the sun, and do not have rocky surfaces. |
| Name the acronym used for all the planets in order from the Sun | MVEMJSUN |
| List aspects of Mercury | Closest to Sun, and temperature varies greatly |
| List aspects of Venus | "Evening Star", rotates East to West, opposite of most planets |
| List aspects of Earth | Only planet to support life |
| List aspects of Mars | Most like Earth, surface "sculpted" by winds, moving liquids, meteorite and asteroid impacts, volcanic and seismic activity, same as Earth. Temp, ver. low |
| List aspects of Jupiter | Great Red Spot - storm, biggest planet |
| List aspects of Saturn | Beautiful rings, if it was placed in water, It would float! |
| List aspects of Uranus | Bluish, tilted at about a 90 degree angle, rotates top to bottom |
| List aspects of Neptune | Had Great Dark Spot, but it dissapeared |
| Pluto: Planet or Not? | It is not a planet |
| What combines to keep the planets in orbit? | Inertia and Gravity |
| Comets are ________ | Chunks of ice and dust that orbit the Sun |
| Satellites are ________ | Any man-made or natural thing that revolves around an object in space |
| Asteroids are __________ | Chunks of rock and dust orbiting the sun; most found between Mars and Jupiter in the Asteroid Belt |
| Meteoroids are ________ | Chunks of rock and dust found in space that usually comes from Asteroids and/or comets |
| Ptolemy was _______ | Astronomer who thought the Solar System was geocentric |
| Galileo was _________ | 1st scientist to use a telescope to observe space |
| Copernicus was ________ | Thought Solar System was Heliocentric |
| Brahe was __________ | Observed positions of planets for 20 years |
| Kepler was __________ | Found out about the elliptical paths in which planets orbit the sun |
| Newton was ___________ | Stated laws of gravity. Confirmed Kepler, found out that planets are held in orbit by gravity |
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