| A | B |
|---|
| False | T or F The solar system contains only the sun, planets,and the moon |
| False | T or F Meteors are falling stars |
| False | T or F Comets and meteors are out in space and do not reach the Earth's surface |
| False | T or F The Earth is the largest thing in the solar system |
| False | T or F The surface of the sun is without visible features |
| Geocentric | Theory that earth is the center of the revolving plants |
| Heliocentric | Theory that Earth and the other planets revolve around the sun |
| Copernicus, Galileo | Developed the Heliocentric system |
| Aristotle, Ptolemy | Developed the Geocentric system |
| Galieo saw four moons revolving around Jupiter, which proved that not everythiing does not revolve around earth. 2. Venus goes through similar phases as the earth's moon. | Two discoveries made by Galileo supported the heliocentric description of the solar system |
| Kepler | He discovered that the orbit of each planet is an ellipse |
| Elipse | An elongated circle, or oval shape. |
| Inertia and gravity | Newton concluded what two factos combine keep the planets in orbit |
| Interia | The tendency of a moving object o continue in a straight line or a stationary object to remain in place |
| True | T or F The more mass an object has, the more intertia it has |
| Gravity | The attractive force between two objects: its magnitude depends on their masses and the distance between them |
| True | T or F The sun's energy comes from nuclear fusion |
| Nuclear fusion | The process where hydrogen atoms join together to form helium. It occurs only under conditions of extremly high temperatures and pressure. |
| Core | Sun's center |
| Core | Where in the sun does nuclear fusion occur |
| Photosphere, chromospere, and the corona | Three layers of the suns atmoshere |
| Photosphere (light) | The inner layer of the sun's atmosphere. Sphere that makes light |
| Chromosphere (color) | Middle layer of the sun. You see its reddish glow during an eclipse. |
| Corona (crown) | Outer layer of the sun |
| Solar wind | The corona sends out a stram of electrically charged particles call....? |
| Sunspots | areas of gas on the sun that are cooler than the gases around them. |
| Prominence | A huge, looping mass of gas seen above the chromosphere |
| True | T or F The four inner planets are samall and have rocky surfaces |
| Terrestrial planets | Planets that have rocky surfaces |
| Retrograde rotation | A planet that rotates from east to west. Opposite of most other planets |
| Green House Effect | When carbon dioxide traps the heat in the atmosphere |
| True | T or F Jupiture, Saturn, Uranus, and Neptune are much larger that earth , and fo not have solid surfaces |
| False It has 4, Smallest moon is Europa | t or F Jupiters has three moons |
| Chunks of ice and rock | What are Saturns rings made of |
| Result of a mathematical predition. They noticed Uranus was not following the orbit scientist predicted | Before they could see Neptune, what evidence led scientists to conclude that it exited? |
| Comets | Known as dirty snowballs. they are chuns of ice and dust whose orbits are usually very long, narrow ellips |
| Edmond Halley, discovered that the smaller comets circling the same orbit is one big comet | How did Halley's Comet get its name? |
| Asteroids | Masses that are too small and too numerous to be considered planets |
| True (Called the Asteroid Belt) | T or F Most asteroids revolve around the sun betwwn the orbits of Mars and Jupiter |
| Meteoroid | This is a chunk of rock and dust in space that usually comes from comets or asteroids |
| Meteor | When a meteorid enters Earth's atmosphere, friction makes it burn up and produce the streak of light you see in the sky it is called......? |
| Meteorites | What is a Meteoroid that pass through the atmosphere and hit Earth's surface called? |
