Science Chpt 6
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18 terms
Terms | Definitions |
|---|---|
 Fusion | The smashing together of particles. |
| Comet | A mixture of frozen gases, ice, dust, and rock that moves in an irregular circle around the Sun. |
| Solar Flare | Bursts of heat and energy that stretch out from the corona and chromosphere into space. |
| meteroid | a small object in space its name changes when it hits earths atmosphere |
| List the planets is their order from distance from the sun. | Mercuery,venus,earth,mars,jupiter,saturn,uranus,neptune |
| What are the smallest and largest planets? | Mercuery and Jupiter |
| Define the effects of the suns gravity on the planets. | The gravity gets weaker as the planets get farther away. |
| Find Galileo's most significant discovery with his telescope. | He used a telescope to tell that the moon revolved around Jupiter and not everything revolves around the Earth. |
| How do you measure the mass of an object? | gravitational pull |
| What is the largest body in the solar system? | The sun |
| Describe orbital motion of the planets in our solar system. | an oval motion called an ellipse |
| What things keep the planets moving in their orbits? | Gravity from the Sun and Inertia...inertia is the tendency of a moving object to keep moving in a straight line. |
| Which planet ha the greatest surface of gravity? | Jupiter |
| How is gravity impacted when the distance between two objects decreases? | Gravity's pull increases as the distance between two objects decreases...the closer the 2 objects are, the more gravitational pull. |
| What affects the force of gravity? | Gravity's force is affected by the mass of the two objects and how far apart they are. |
| What keeps artificial satellites in orbit around the Earth? | The pull of gravity towards the sun is balanced by the satellites forward motion. |
| What characteristics do planets that are further from the Sun have in common? | The farther planets are bigger, have rings, and have gas rather rock for their surface materials. |
| Be familiar with the sun. What gases make it up? Which is the hottest layer? How would you determine the mass? | Made of mostly hydrogen & helium. The core is the hottest layer. Mass is determined by the length of time it takes for a planet to make around the sun, and the distance between the planet & the sun. |
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