Unit 2 Solar System

3. the name of the law we studied that had a formula to find the force in which two masses equally attract each other through the force of gravity
7. the reason we have seasons
9. the point at which two objects would balance if they were somehow connected
12. the envelope of gases surrounding the Earth or another planet
14. orbital path that takes an object close to another object just once
15. occurs when the Sun, Moon, and Earth are in perfect alignment where the Moon appears to completely block out the Sun from our view
16. there are 4 different types that occur in different time periods throughout the year
17. rise and fall of sea levels caused by the combined effects of gravitational forces exerted by the Moon

1. object that orbits a planet or asteroid in our solar system
2. when a mass moving in a rotating system experiences a force acting perpendicular to the direction of motion and to the axis of rotation.
4. the location of Earth’s magnetic north and south poles to gradually shift and to completely flip locations about every 300,000 years or so is called what?
5. The slow tipping of the Earth’s axis in a circle with a period of about 26,000 years
6. shields us from erosion of our atmosphere by the solar wind (charged particles our Sun continually spews at us), erosion and particle radiation from coronal mass ejections (massive clouds of energetic and magnetized solar plasma and radiation), and cosmic rays from deep space.
8. one of two stable isotopes of hydrogen
10. process that forces hydrogen into early Earth's magma ocean to cool the Earth's crust down.
11. type of orbit where one objects goes around another object over and over again
13. a layer in the Earth's stratosphere containing a high concentration of oxygen, which absorbs most of the UV radiation from reaching the Earth's surface