Science+Homework

Science pg. 58-59 1-18 Cyle Cervantes

1. Rotation- The act of turning, as a wheel or a solid body on its axis. Revolution- The act of revolving, or turning round on an axis or a center

2. Ellipse- An oval or oblong figure Circle- A plane figure, bounded by a single curve line called its circumference, every part of which is equally distant from a point within it, called the center

3. Solar system- the sun, with the group of celestial bodies which, held by its attraction, revolve round it Solar nebula- The rotating flattened cloud of gas and dust from which the sun and the rest of the bodies in the solar system formed

4. Planetesimal- Bodies ranging in size from meters up to hundreds of kilometers in diameter that formed during the process that formed the planets by accretion Planet- A celestial body larger than an asteroid or comet, illuminated by light from a star, such as the sun, around which it revolves

5. Temperature- The degree of hotness or coldness of a body or environment pressure- Force applied uniformly over a surface, measured as force per unit of area

6. Photosphere- The area of the sun that we can see Corona- The area of the sun that we can see only during an eclipse

7. Radioactive zone

8. Revolution

9. Nuclear fusion

10. d

11. a

12. c

13. c

14. b

15. c

16. a

17. a

18. Sometimes two nebulas collide into each other which upsets the balance and soon makes the solar system.