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The Universe

Total questions: 30

Worksheet time: 24mins

Name
Class
Date
1.

True or False? The Hertsprung-Russell diagram depicts stars increasing in luminosity (on Y-axis), and decreasing in Kelvin temperatures (across X-axis)

a)

True!

b)

False, yo... other way around

c)

What language are you speaking?

2.
As you move up the y-axis on the H-R diagram, absolute magnitude __________. 
a)
decreases
b)
increases
c)
remains constant
d)
does not change
3.
Most stars are made of which gases?
a)
Hydrogen only
b)
Hydrogen and Lithium
c)
Hydrogen and Sodium
d)
Hydrogen and Helium
4.

Stars are formed out of giant clouds of gas and dust, called...

a)

Nebula

b)

Black holes

c)

Galaxies

d)

Comets

5.
The effective temperature of a star is related to its...
a)
solar system
b)
luminosity
c)
absolute magnitude
d)
color
6.
A Hertzsprung-Russell (H-R) diagram shows the relationship between ____. 
a)
apparent magnitude and parallax
b)
parallax and temperature
c)
absolute magnitude and apparent magnitude
d)
temperature and absolute magnitude
7.
As you move along the x-axis of the H-R diagram, temperature __________. 
a)
increases
b)
remains constant
c)
decreases
d)
does not change
8.
Which star has the lowest temperature?
a)
A
b)
B
c)
C
d)
D
9.
What are the final two stages of a medium mass star?
a)
white dwarf - black dwarf
b)
neutron star - black hole
c)
supernova - neutron star
d)
pulsar - neutron star
10.
As gravity pulls gas and dust into a sphere that becomes denser and hotter, and a sunlike star begins to form, it is called a(n)
a)
white dwarf
b)
red dwarf
c)
supergiant
d)
protostar
11.
All stars begin their life in a
a)
Main Sequence
b)
Nebula
c)
Protostar
d)
Black Dwarf
12.

A gigantic explosion, causing the death of a large star

a)

pulsar

b)

red giant

c)

supernova

d)

black hole

13.

Which star has the lowest absolute magnitude?

a)

A

b)

B

c)

C

d)

D

14.

Star in which the electrons and protons become neutrons

a)

supernova

b)

neutron star

c)

black hole

d)

pulsar

15.
Our sun is currently in what star stage?
a)
Protostar
b)
Nebula
c)
Main Sequence
d)
Red Giant
16.
What color are the hottest stars?
a)
red
b)
yellow
c)
orange
d)
blue
17.
______ is a force that causes dust particles to stick together in a nebula.
a)
nuclear fusion
b)
gravity
c)
hydrogen
d)
friction
18.
Cell phones use_____________waves.
a)
Microwaves
b)
Gamma
c)
XRays
d)
Radio 
19.
Our galaxy is called the
a)
Earth Nebula
b)
The Hubble Galaxy
c)
The Milky Way
d)
The Snickers
20.
Which of the following electromagnetic waves has the highest energy? 
a)
radio waves
b)
microwaves
c)
infrared light
d)
visible light
21.
Most stars are made of which elements?
a)
Hydrogen only
b)
Hydrogen and Lithium
c)
Hydrogen and Sodium
d)
Hydrogen and Helium
22.
Galaxies are composed of (best answer)
a)
stars
b)
stars and gas
c)
stars, dust, and gas
d)
stars, dust, and gas held together by gravity
23.
All electromagnetic waves have _________ wavelengths and ________ frequencies.
a)
different, similar
b)
different, different
c)
similar, similar
d)
similar, different
24.

Which object in space is NOT made of rock and metal/iron?

a)

Asteroid

b)

Meteor

c)

Meteorite

d)

Comet

25.

Which object in space has a long, narrow orbit around the sun. We never see this object except once every 75 years!

a)

Asteroid

b)

Comet

c)

Meteor

d)

Meteorite

26.
Distance measurement used by astronomers for distant objects.
a)
Kilometers
b)
Light Years
c)
Miles
d)
Light Seconds
27.
What type of galaxy is this?
a)
Spiral
b)
Elliptical
c)
Irregular 
d)
Irrational
28.

Which object in space looks like a "dirty snowball" because of its composition of ice, gas and dust?

a)

Asteroid

b)

Meteoroid

c)

Comet

d)

Meteor

29.

A comet forms a tail when

a)

It is deep in outer space and begins to melt

b)

It gets close to the sun and begins to melt

30.

What do asteroids, comets and meteors all have in common?

a)

They are all made of rock/iron

b)

They are all made of ice and dust

c)

They all orbit the sun

d)

They are all found in the asteroid belt

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