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WorksheetsUnit 1: Forming Our World(Universe) Test Review
Total questions: 40
Worksheet time: 1hrs 23mins
Name
Class
Date
1.
To an observer on Earth, the Sun appears brighter than the star Rigel because the Sun is..... due to its apparent magnitude.
a)
hotter than Rigel
b)
more luminous than Rigel
c)
closer than Rigel
d)
larger than Rigel
2.
Which sequence correctly lists the relative sizes from largest to smallest?
a)
Universe, Milky Way Galaxy, our Solar System
b)
Our Solar System, Milky Way Galaxy, Universe
c)
Milky Way Galaxy, Universe, our Solar System
d)
Milky Way Galaxy, Our Solar System, Universe
3.
To truly be a star, an object.....
a)
must emit its own energy and be close the the center of the galaxy
b)
must be made of gas and have planets revolving around it
c)
must be made of gas and emit its own light
d)
it must be the center of the galaxy and emit its own light
4.
All of the factors below determine the true brightness of stars EXCEPT
a)
Mass
b)
Size
c)
Temperature
d)
Distance
5.
A star may appear brighter mainly due to....
a)
temperature
b)
distance
c)
size
d)
color
6.
As an observer of this spectrum, this star would be
a)
staying still
b)
moving away
c)
moving toward
d)
orbiting Earth
7.
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
8.
More massive stars continue to fuse elements in their cores all the way up to ________.
a)
silicon
b)
iron (Fe)
c)
carbon
d)
plutonium
9.
a gigantic explosion that causes the death of a large star
a)
pulsar
b)
red giant
c)
supernova
d)
black hole
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.
As our sun continues through its life cycle, it will _________.
a)
gradually get smaller and smaller until it dies out.
b)
Gradually get larger until its outer layers drift off.
c)
become denser and denser until it forms a black hole.
d)
become hotter and hotter until it becomes a blue hypergiant.
12.
All stars the main sequence are middle aged. That is, they are fusing ________ into ________ in their cores.
a)
hydrogen into helium
b)
helium into carbon
c)
oxygen into iron
d)
helium into hydrogen
13.
Which stage do stars spend the majority of their lives in?
a)
Nebula Stage
b)
Main Sequence
c)
Red Giant Stage
d)
Dying stage
14.
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
15.
Helium is the result of ______ atoms combining in nuclear fusion.
a)
nuclear fusion
b)
gravity
c)
hydrogen
d)
iron
16.
Which of the following is evidence of the Big Bang Theory?
a)
Cavemen heard a loud bang at the beginning of time.
b)
The universe isn't moving
c)
The universe is expanding
d)
The universe is getting smaller
17.
Which of the following is NOT evidence of the Big Bang Theory?
a)
Abundance of Hydrogen and Helium
b)
CMBR everywhere
c)
Stars that are blue shifted
d)
the universe is getting bigger
18.
Which of the following is NOT true about the Big Bang Theory?
a)
It is the scientific explanation of how life began on Earth and evolved over time.
b)
It is the scientific explanation for the origin of the universe.
c)
It states that the universe expanded from a single point and is still expanding today.
d)
It states that the universe used to be much hotter and smaller.
19.
Galaxies that move closer to us show a what shift?
a)
Red Shift
b)
Green Shift
c)
Orange Shift
d)
Blue Shift
20.
A cloud of gas and dust where new stars form is called a
a)
solar eruption
b)
light year
c)
nebula
d)
photoshere
21.
What type of galaxy does this image depict?
a)
Elliptical
b)
Spiral
c)
Barred Spiral
d)
Irregular
22.
A ______ telescope uses a mirror to focus light onto a small area.
a)
reflecting
b)
refracting
c)
radio
d)
spectrum
23.
The type of death a star has will depend on the star's __________ .
a)
Color
b)
Shape
c)
Mass
d)
Luminosity
24.
The HR diagram shows that main-sequence stars
a)
are mostly hot and dim
b)
are mostly cool and bright
c)
increase in brightness as they increase in temperature
d)
decrease in brightness as they increase in temperature
25.
What is a light-year?
a)
distance between two stars
b)
distance light travels in one year
c)
the time it takes light to travel 300,000,000 meters
d)
the time it takes light to travel to Earth from the Sun
26.
The Milky Way is what type of galaxy?
a)
Spiral
b)
Elliptical
c)
Irregular
d)
Barred Spiral
27.
What color are the coolest stars?
a)
blue-white
b)
yellow
c)
orange
d)
red
28.
The event that marks the beginning of our known universe
a)
Theory of Evolution
b)
Big Bang Theory
c)
Cell Theory
d)
Blackhole theory
29.
Using the HR diagram, which of the following is TRUE of Red Supergiants?
a)
They are brighter than our sun, but have a lower temperature
b)
They are brighter than our sun, and have a higher temperature
c)
They are the biggest stars in the galaxy
d)
They are very bright and very hot stars
30.
Place these objects in order from smallest to largest.
a)
Planets, solar system, universe, galaxy
b)
Solar system, planets, galaxy, universe
c)
Planets, solar system, galaxy, universe
d)
Galaxy, solar system, planets, universe
31.
What will be the next stage of our Sun's life cycle?
a)
black hole
b)
white dwarf
c)
red giant
d)
blue supergiant
32.
Parallax is a technique used to measure
a)
Distance of a star to our Sun
b)
Distance from a star to Earth
c)
Distance between two stars (not including our sun)
d)
the diameter of the Sun
33.
Our Sun is the ONLY star in our solar system.
a)
True
b)
False
34.
Telescopes like Hubble have been sent to space because
a)
Earth's Atmosphere interferes with view sometimes from Earth's surface
b)
The newer telescopes are just too big and need more space to function
c)
Earth-based telescopes are too difficult to operate
d)
Telescopes in space are much easier to repair
35.
Which letter on the H-R diagram represents an average sized star at the end of its life?
a)
A
b)
B
c)
C
d)
D
36.
This unknown star contains
a)
beryllium
b)
copper
c)
manganese
d)
strontium
37.
Why are giant stars very bright?
a)
they move faster than smaller ones
b)
they contain mostly helium
c)
they have a larger surface area
d)
they are closer to us
38.
Another galaxy is traveling away from Earth at a velocity of 70,000 km per second. Use the information in the table to estimate the galaxy's distance from Earth.
a)
1.2 million light years
b)
3,000 million light years
c)
4,100 million light years
d)
550 million light years
39.
Compared to a blue supergiant star like Rigel, our Sun is...
a)
much bigger, hotter, and has a shorter lifespanc
b)
smaller, dimmer, and has a longer lifespan
c)
bigger, dimmer, and has a longer lifespan
d)
smaller, brighter, and has a shorter lifespan
40.
During the main-sequence stage, how is energy generated in a star's core?
a)
hydrogen fuses into helium
b)
carbon fuses into helium
c)
helium fuses into hydrogen
d)
carbon fuses into oxygen
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