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Unit 3-Chapter 8 Test

Total questions: 46

Worksheet time: 3610secs

Name
Class
Date
1.
A nebula is:
a)
A cloud of ice
b)
A cloud of dust and gas
c)
A cloud of just gas
d)
A cloud of just dust
2.
The most abundant gases in a nebula are:
a)
Hydrogen & Oxygen
b)
Nitrogen & Oxygen
c)
Hydrogen & Helium
d)
Oxygen & Helium
3.
A nebula starts to move because:
a)
A nearby supernova
b)
A nearby star
c)
A passing spaceship
d)
A passing comet
4.
As a nebula collapses it also begins:
a)
Expand
b)
Rotate
c)
Shake
d)
Turn to ice
5.
Intense pressure in the protosun (protostar) caused:
a)
Fire in the Sun to start
b)
Helium to break down into Hydrogen
c)
Nuclear Fusion to start
d)
Nuclear Fusion to end
6.

What is the final stage of a low mass star?

a)

White Dwarf

b)

Black Hole

c)

Red Giant

d)

Neutron Star

7.

What is the final stage of a high mass star?

a)

White Dwarf

b)

Black Hole

c)

Red Giant

d)

Neutron Star

8.

What is the final stage of a very high mass star?

a)

White Dwarf

b)

Black Hole

c)

Red Giant

d)

Neutron Star

9.

Extra Credit: Which star is likely to be the hottest? Use the H-R diagram

a)

Type B Star

b)

White Dwarf

c)

Red Giant

d)

Type G Star (Sun)

10.

Which stage of life is the sun currently in?

a)

White Dwarf

b)

Planetary Nebula

c)

Main Sequence

d)

Red Giant

11.

A stellar nebula will eventually condense into a hot ball of mostly hydrogen called a __________. At this point, nuclear fusion has not yet started but it will soon.

a)

Protostar

b)

White Dwarf

c)

Brown Dwarf

d)

Main Sequence

12.

Extra Credit: Elements heavier than iron are not formed in Main Sequence or Red Giant Stars. Where are heavier elements like silver, gold, and lead formed?

a)

White Dwarfs

b)

Stellar Nebulae

c)

Neutron Stars

d)

Supernovae

13.

What is a Black Hole?

a)

A collapsed star so dense that light does not escape its gravitational pull.

b)

An explosion in which some layers of a star are blown away.

c)

A large, bright, cool star

d)

A small, dim, hot star

14.

An explosion in which some of the outer layers of a very massive star are blown away

a)

Nebula

b)

Main Sequence

c)

Protostar

d)

Supernova

15.
______ is a force that causes dust particles to stick together in a nebula.
a)
nuclear fusion
b)
gravity
c)
hydrogen
d)
friction
16.
Kepler's first law states that the orbits of the planets are oval in shape or 
a)
ellipses
b)
perfect circles
17.
A planet moves __________ when it is farthest from the sun.
a)
faster
b)
slower
18.

The unknown emissions spectra belongs to the element

a)

Hydrogen

b)

Mercury

c)

Neon

d)

Sodium

19.

The unknown emissions spectra belongs to the element

a)

Hydrogen

b)

Mercury

c)

Neon

d)

Sodium

20.

The unknown emissions spectra belongs to the element

a)

Hydrogen

b)

Mercury

c)

Neon

d)

Helium

21.
Light travels at a finite, but incredibly fast speed.
a)
True
b)
False
22.

BONUS: When sunlight is split by a prism or diffraction grating it appears to emit a ___ spectra.

a)

absorption

b)

dark-line

c)

continuous

d)

bright-line

23.

Which element is primarily responsible for the energy production in the sun?

a)

Oxygen

b)

Hydrogen

c)

Helium

d)

Carbon

24.

A planet moves __________ when it is closest to the sun.

a)
faster
b)
slower
25.

If a planet's eccentricity is closer to zero it more like a(n)

a)

circle

b)

highly eccentric ellipse

26.

Supernova of a nearby star occurs. Then what?

a)

Shock waves hit the nebula causing it to collapse.

b)

The energy enriched nebula begins to contract further due to gravity.

c)

The nebula begins to spin and flatten.

27.
The Solar Nebula Hypothesis explains
a)
Mixed orbit direction of planets
b)
How our sun and planets formed
c)
How the universe formed
d)
How the Milky Way formed
28.
Planetestimals collided to form protoplanets through the process of
a)
Nebulae
b)
Accretion
c)
Fusion
d)
Fission
29.

The center of the nebula begins to get hot and dense. Then what?

a)

The nebula begins to spin and flatten.

b)

The SUN is born, fusion begins in the core.

c)

A protostar forms in the center of the nebula.

30.

List the inner planets.

a)

Jupiter, Saturn, Uranus, and Neptune

b)

Mercury, Venus, Earth, Jupiter

c)

Mercury, Venus, Earth, and Mars.

d)

Venus, Earth, Mars, Saturn

31.

The outer planets are

a)

Jupiter, Saturn, Uranus, and Neptune

b)

Mercury, Venus, Earth, and Mars

c)

Jupiter, Saturn, Mars, Neptune

d)

Mercury, Jupiter, Uranus, Saturn

32.

In general the universe is?

a)

Expanding

b)

Contracting

c)

Stable

d)

Constant

33.
What two objects do scientists study to learn about the formation of the solar system?
a)
Comets & Asteroids
b)
Comets & Exoplanets
c)
Exoplanets & Asteroids
d)
Asteroids & Distant Stars
34.
The core of a Red Giant collapses and becomes a ___________________.
a)
White Dwarf
b)
Blue Supergiant
c)
Red Supergiant
d)
Black Hole
35.
After a supernova, the core can collapse into a neutron star, or if massive enough even a ___________.
a)
Black Hole
b)
White Dwarf
c)
Brown Dwarf
d)
Black Dwarf
36.
When a Red Giant's outer atmosphere drifts away it is now known as a ____________.
a)
planetary cloud
b)
White Dwarf cloud
c)
planetary nebula
d)
expanding nebula
37.
More massive stars continue to fuse elements in their cores all the way up to ________.
a)
silicon
b)
iron (Fe)
c)
carbon
d)
plutonium
38.
A black hole is an object so dense with so much gravity that even ________ cannot escape.
a)
man
b)
bacon
c)
spaceships
d)
light
39.
a gigantic explosion that causes the death of a large star
a)
pulsar
b)
red giant 
c)
supernova
d)
black hole
40.
The color of a star depends on its
a)
size
b)
temperature
c)
shape
d)
magnitude
41.
What color are the hottest stars?
a)
red
b)
yellow
c)
orange
d)
blue
42.
Which stage do stars spend the majority of their lives in?
a)
Nebula Stage
b)
Main Sequence
c)
Red Giant Stage
d)
Dying stage
43.
Why won't our sun ever become a black hole?
a)
It is too massive
b)
It is too old
c)
It is too young
d)
It is too small
44.
What determines if a star becomes a giant or a supergiant?
a)
star size
b)
star temperature
c)
star color
d)
star luminosity
45.
The length of time required for half of the radioactive atoms in a sample to decay is its...
a)
era
b)
age
c)
half-life
d)
eon
46.
If the half-life of a radioactive group of atoms is 100 years, then how old is the rock if there have been two half-lives?
a)
25 years
b)
200 years
c)
400 years
d)
800 years

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