ESS Unit 1: Vocabulary Check

4. Stars exist because of the equal balance between the outward explosive force of nuclear fusion and the inward pull of ____________.
6. Term used to measure the degree of orbital flattening (measure of how elliptical an orbit is)
8. The term that refers to a small rocky/metal body that falls from space and strikes the Earth's surface
9. Another term used to classify for gas giant planet
10. Term referring to object's motion around another object (example Moon travelling around the Earth)
11. Cloud of gas and dust that stars are born, and are created by the deaths of dead stars
12. Term that measures the amount of matter crammed within a specific volume of space
13. Nuclear process that occurs at the center of star
16. Term referring to an object's spin around its own axis, responsible for the "day" and "night"
17. The term used to define the central point in which an object orbits around (within a elliptical orbit)

1. Term used to classify planets that are made of Rock and metal
2. The specific region around a star where a rocky planet's surface temperature is "just right" to maintain liquid water
3. Death of star -- occurs in the form of a massive explosion
5. Planet with the most elliptical orbit
7. Specific point within a object's orbit where it is closest to the Sun
14. Last element massive stars make before they go supernova
15. The only planet with a day longer than its year