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Description
Flashcards by Marian Ruiz, updated more than 1 year ago
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Created by Marian Ruiz
over 9 years ago
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| Question | Answer |
| Galaxies | are the large groups of stars |
| Stars | are enormous balls of extremely hot gas |
| UNIVERSE is formed of | Galaxies, Stars, Planets and Nebulae |
| Planets | are spherical bodies which revolve around the sun. |
| Nebulae | are composed of clouds of gas and dust and surrounds the stars. |
| Nebulae | are composed of clouds of gas and dust and surrounds the stars |
| Milky Way is | the galaxy we live in |
| The Sun is | a star which consists mainly of two gases: hydrogen and helium. |
| Mercury | - It’s the smallest and closest to the Sun. - No satellites. - No atmosphere |
| Venus | - it spins "backwards" on its axis. - It’s the planet with the longest day; takes 243 Earth days. - No satellites. - CO2 in the atmosphere. |
| Earth | - It has a satellite, the Moon. - Its atmosphere is composed by nitrogen and oxygen |
| Mars | - Also called the red planet. - It has two satellites. - CO2 in the atmosph |
| The inner planets ... | They are mostly made of rock and metal and have few or no moons. |
| Jupiter | - It’s the largest planet. - It’s the planet with the shortest day; a day on Jupiter only takes 9.8 Earth hours! |
| Saturn | - It has more than 50 satellites. - It has a group of rings made of dust and rocks. - It’s the lightest planet that we know |
| Uranus | - It has more than 25 satellites. - It has a group of rings. - It’s an extremely cold planet. It’s called the”ice giant” |
| Neptune | - It has more than 10 satellites. - It’ a very windy place. |
| The outer planets | - They are mostly huge, mostly gaseous, ringed, and have many moons . - They also have much more mass than the terrestrial planets. |
| An asteroid | It is a large rock in outer space |
| Where is the belt of asteriods? | It's between Mars and Jupiter. |
| A comet is ... | It's a small celestial body. They are made up of dust, ice and rock, which release gas clouds when they are near the Sun. |
| Kuiper Belt | It is a disc-shaped region of icy objects beyond the orbit of Neptune, billions of kilometers from our sun |
| Comets come from two places... | The Kuiper Belt and the Oort Cloud. |
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