PHYC 110
Physical Science
Name _______________
Date ________________
Exercise 3: Universe
1. The Milky Way is a
a) star b) dwarf planet
is actually a Mars candy)
c) constellation
d) galaxy e. Nestle candy bar (Milky Way
2. The Sun’s internal temperature is __15,000,000 K.
3. Link the following terms and names
Term or Name
1. Dwarf Planet
2. Edwin Hubble
3. Brightest Star
4. Terrestrial Planet
5. Large Star
6. Jovian Planet
7. North Star
8. Observatory
9. Kelvin
10. Cosmological Theory
11. Star Energy Source
12. Distance
13. Constellation
14. Galaxy
Answer
h
m
f
n
g
b
i
l
e
j
c
k
a
d
Possible Answers
a. Orion
b. Saturn
c. Nuclear Fusion
d. Andromeda
e. Temperature Scale
f. Sirius
g. Betelgeuse
h. Pluto
i. Polaris
j. Big Bang
k. Light Year
l. Mt. Wilson
m. Astronomer
n. Venus
4. If the speed of light is 3.0x108 m/s, how far can a light beam go in one year (in
meters)?
3.0x108 m/s x 60 s/min x 60 min/hr x 24 hr/day x 365 days/year = 9.5x1015 m/yr
5. What findings did Edwin Hubble publish in 1929 based on the red shift?
a. Red sky at night, sailor’s delight; red sky in morning, sailor’s warning.
b. Galaxies are receding from us.
c. Communism was adversely influencing labor unions in the U.S.
d. Hydrogen and helium are found on our Sun and distant stars.
6. What is the closest star to the Earth?
a. Polaris
b. Proxima Centauri
c. Ursa Major (i.e., the Big Dipper)
d. Venus
e. Sun