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WorksheetsFinal Test
Total questions: 20
Worksheet time: 10mins
1 The Sun is the closest star to the Earth, but it is just one type of star in the Universe. There are many types of stars with various sizes and temperatures. The diagram represents stars that are in their main sequence. Where on the diagram would the sun most likely be found
A
B
C
D
Which of the following would BEST support the theory that the universe undergoes cycles of expansion and contraction that last billions of years?
finding another planet in the solar system that is similar to earth
discovering life-forms on another planet
observing blue and red shifts from galaxies
calculating the age of the universe.
Which of the following generally describe the position of our sun, often called Sol by astronomers, in the Milky Way galaxy?
Sol is found close to the galactic core and orbits within the Milky Way more slowly than the galactic arms.
Sol is found near the periphery of the Milky Way and orbits faster than the galactic arms.
Sol is found at approximately one-half galactic radius from the center of the Milky Way and orbits at approximately the same speed as the galactic arms.
Sol is found at the geometric center of the Milky Way galaxy and does not move within the Galaxy.
The table above shows the distance between Earth and seven relatively nearby stars in the galaxy.
According to the table, the Sun is —
about a million of times closer to Earth than any of the other stars.
about as close to Earth as the other stars.
thousands of times farther from Earth than any of the other stars.
Light from the Sun takes about eight minutes to reach Earth, but light from other stars can take several years. Which of the following best explains why this is true?
The Sun is the closest star to Earth.
The Sun is the largest star in the galaxy.
The Sun's light moves faster than other stars' light.
The Sun's light is a brighter color than other stars' light.
Which statement best describes a galaxy?
A cloud of gas that is the birthplace of stars
A system of billions of stars, gas, and dust held together by gravity
A ball of plasma that experiences nuclear fusion in its core
A mass of dust and ice that orbits a star in an elliptical pattern
What makes up a galaxy?
a group of stars that together form a visible pattern
a collection of planets orbiting a central star system
any object that has smaller bodies caught within its gravity
a massive collection of star systems orbiting a central point
A spiral galaxy —
has an undefined shape that is constantly changing.
has a bulging middle and arms that coil outwards.
is flattened and elongated.
is perfectly round.
Which image illustrates a spiral galaxy?
Which of the following is an accurate statement about irregular galaxies?
They have more available gas and dust than other types of galaxies.
They have barred arms extending from the center.
They are shaped like basketballs.
They are not held together by gravity as strongly as other galaxies.
The Milky Way is an example of a galaxy with .
An elliptical shape
A globular shape
An irregular shape
A spiral shape
Galaxies are primary identified by astronomers based on their: (hint: galactic "morph"ology)
Width
Mass
Density
Shape
Which of the following is largest
solar system
milky way
andromeda galaxy
virgo supercluster
Approximately how old is the universe according the the big bang (rounded to the nearest whole number value)?
4 million years old
4 billion years old
14 billion years old
14 trillion years old
Which of the following evidences does NOT support the formation of the big bang?
Cosmic microwave background radiation
Red Shifts of Galaxies
Steady State Theory
Hubble's Law
What is a characteristic of dark matter?
Particle that can be seen directly
particles that reflect gravity
particle that absorb light
particles that can be calculated indirectly by gravity
Which statement about the universe is correct?
It consists of one Sun, nine planets and satellites
It is made up mostly of empty space
It is known as the Milky Way.
It is gradually getting smaller.
Scientists that believe in the Big Bang theory think that the universe was once much ---
smaller and cooler
brighter and bigger
heavier and darker
denser and hotter
The evidence for the the expansion of the universe is found in a phenomenon known as...
black holes
red shift
blue shift
radioactivity
The name given to the force that is believed to be making the universe larger behaving like the opposite of gravity.
Dark Energy
Dark Vader
Dark Matter
Dark Cosmos
Dark Gnomes
