Question

Pleas help! I will fan and give you a medal!
1. What do astronomers believe is located at the center of the milky way galaxy?
a. a cluster of stars
b. a large solar system
c. a binary star system
d. a supermassive black hole

Answer 1

2. How do stars located in the galactic disk orbit the galactic center?
a. they so not orbit the galactic center
b. they move in circular orbits around the galactic center
c. they bob up and down as they orbit the galactic center
d. they orbit in elliptical orbits with random orientations

3. Who used the term ‘universe’ to describe the Milky Way, suggesting that the sun was at the center surrounded by a wheel of stars?
a. Galileo
b. Thomas Wright
c. Jacobus Kaptryn
d. Henrietta Leavitt

4. Regions in the milky way where density waves caused gas clouds to crash into each other are called
a. emission nebulae
b. spiral arms
c. open clusters
d. galactic halos

5. The pinwheel-shaped spiral arms of out galaxy extend outward from the
a. interstellar matter
b. galactic bulge
c. galactic center
d. nebulae

6. The galactic center of the milky way is located in the direction of the constellation
a. Cassiopeia
b. Aquarius
c. Centaurus
d. Sagittarius

7. What molecules can be found in the interstellar medium?
a. water, carbon dioxide and hydrogen
b. oxygen, nitrogen and ammonia
c. nitrogen, carbon dioxide and oxygen
d. hydrogen, helium and methane

8. Which component of out galaxy contains only a small amount of interstellar medium?
a. bulge
b. disk
c. halo
d. center

9. Where does the sun lie within the milky way?
a. in the galactic halo
b. in the galactic disk
c. in the galactic bulge
d. in the galactic center

10. 18th century astronomer William Herschell first began estimating the size of what would later be known as the milky way galaxy by
a. estimating how the interstellar medium might be held together by it’s own gravity
b. outlining the galactic disk based on stars’ luminosity
c. counting how many stars could be seen in carious directions of the sky
d. developing a method to observe stellar pulsations

Thank you soo much for helping me!!

Answer 2

1. D

Answer 3

Hint Hint* You can search the questions on Google and find the rest of the answers.

Answer 4

@Lexi19 I tried that and couldn't find anything.

Answer 5

1-D
2-B
3-A
4-B
5-B
6-D
7-A
8-idk
9-B
10-C
hope i helped, sorry i was late on the response. :)

Answer 6

Thanks for the help. 8 was c.

Answer 7

no problamo anytime :)

Answer 8

3= Thomas Wright
2= c. They Bob up and down as they orbit the galactic center.