1. Sciene Starter #1 1. The color of a star depends on what. a
Sciene Starter #1 1. The color of a star depends on what? a. temperature b. shape c. mass d. magnitude 2. What is a nebula?
CHAPTER 15

2. Science Starter #2
What does a star’s absorption spectrum show about that star?
What do scientists study about stars?

3. Science Starter #3
What do the black lines on a star’s absorption spectrum indicate?
Why do scientist study the light coming from distant galaxies?

4. Science Starter #4 1. Why is the actual motion of stars hard to see?
2. Why do stars seem to circle around the North Star, Polaris?

5. Science Starter #5 Write the names of a star’s life cycle in order:
White dwarf, proto-star, main sequence, red giant
At about _________ degrees ________, _________ begins to change into helium and energy is released in a process called nuclear fusion.

6. Science Starter #6
1. What kind of stars are along the middle of the H-R diagram?
2. What magnitude is brightest?
a b c d. -11

7. Science Starter #7 List 5 interesting facts from the video clip

8. Science Starter #8
1. What is a collection of billions of stars, dust, and gas held together by gravity?
2. What is a globular cluster?

9. Summarize the big bang theory:
Science Starter #9
Summarize the big bang theory:
What is making the universe seem to expand quickly?

10. 1. What is the difference between dark matter and dark energy. 2
1. What is the difference between dark matter and dark energy? 2. What controls the size and shape of the universe?
Science Starter #10

11. CHAPTER 16- Science Starter #1
1. All the matter in a nebula is held together by __________ which is very weak because there is a lot of empty space between the particles.
2. In a nebula, _______ particles collide and form larger particles.

12. Science Starter #2 1. How is a nebula held together?
A. the outward force of gravity and inward pressure.
B. the inward force of gravity and outward pressure.
C. high and low kinetic energies.
D. high and low temperatures.
2. What process gives the sun its energy?

13. CH. 16 – Science Starter #3
What are the glowing trails that result when a meteoroid burns up in earths atmosphere?
Venus has a ________________ rotation, unlike most planets, it appears to spin in a clockwise direction when viewed from above its North Pole.

14. Science Starter #4 Rocky, Dense, and Small = ____________ Planets
__________ ______ is 3 times higher than Mount Everest, is the largest mountain in the solar system, and is about the size of Arizona.
Earth completes one __________ around the sun each year.