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Planets
OMMS 6th Red Planets Test
| Question | Answer |
|---|---|
| comet | loose collections of ice, dust, and small rocky particles whose orbits are usually long, narrow elipses |
| coma | clouds of gas and dust form a fuzzy outer layer |
| nucleus | the solid inner core of a comet |
| Kuiper belt | a donut shaped region that extends from behond Neptune's orbit to about 100 times Earth's distance from the sun |
| Oort cloud | a spherical region of comets that surrounds the solar system out to more than 1000 t9imes the distance between Pluto and the sun |
| Asteroid | rocky objects that are too small and too numerous to be considered planets |
| asteroid belt | The asteroids that revolve around the sun between Mars and Jupiter |
| meteoroid | a chunk of rock or dust in space that comes from asteroids or conets |
| meteor | The streak of light seen in the sky when a meteoroid enters Earth's atmosphere and burns up |
| meteorite | Meteoroids that pass through the atmosphhere and hit Earth's surface |
| Terrestrial planets | Earth, Mercury, Venus, and Mars |
| 3 similarities among the inner planets | they are small, rocky, and dense |
| Earth | 70 percent of its surface is covered with water |
| Which planet is the only one with oceans? | Earth |
| Crust, Mantle, Core | The 3 main layers of Earth |
| What is Earth's dense inner core made of? | Iron and Nickle |
| Mars | Rotates on its axis in about the same amount of time that Earth does |
| Mercury | Many craters on the surface |
| No moons | Mercury |
| Closest to the sun | Mercury |
| Why does Mercury have a large range of temperatures? | Because there is no atmosphere |
| Venus | Sometimes called the evening star |
| Carbon dioxide | Gas that makes up the atmosphere of Venus |
| Venus | Revolves in the opposite directions from other planets and moons |
| Greenhouse effect | The trapping of heat by the atmosphere on Venus |
| The Red Planet | Mars due to its red color when seen in the sky |
| Mars' atmosphere | mostly carbon dioxide (CO2) |
| Mars' polar ice caps | contain frozen water and carbon dioxide |
| Planet with giant volcanoes | Mars |
| Phobos and Deimos | Mars' moons |
| Mercury | rocky surface, little/no atmosphere |
| Smallest planet | Mercury |
| Planet with no moon | Mercury |
| Venus | Rocky surface |
| Venus | Similar in size, density, and structure to Earth |
| Venus | Thick, heavy atmosphere would crush a human |
| Earth | tilted axis causes seasons |
| Five Outer Planets | Jupiter, Saturn, Uranus, Neptune, Pluto |
| Gas Giants | Jupiter, Saturn, Uranus, Neptune |
| Pluto vs Gas Giants | Pluto is rocky and solid, gas giants are not solid |
| Jupiter | most massive of all planets |
| Saturn's rings | Chunks of ice, rock, and dust |
| Gas Giants' composition | hydrogen and helium |
Created by:
scootermunkin
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