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WorksheetsOur Expanding Universe
Total questions: 20
Worksheet time: 16mins
Name
Class
Date
1.
The three pieces of evidence for our current theory of the universe are:
a)
blueshift, CMB, moon landing.
b)
redshift, IBM, Andromeda galaxy.
c)
redshift, CMB, distribution of elements.
d)
doppler effect, light spectra, fusion.
2.
Galaxies that are redshifted are:
a)
actually blue.
b)
really far away.
c)
invisible.
d)
moving away from us.
3.
The universe is expanding! This means that:
a)
all of the galaxies are spreading out.
b)
the universe must have started from a single point.
c)
the universe is cooling down.
d)
all of the above.
4.
The CMB is:
a)
the remaining energy from the big bang.
b)
incredibly hot.
c)
visible to the human eye.
d)
only located in certain places in the universe.
5.
The only elements in the universe were hydrogen and helium until:
a)
the big bang.
b)
humans came along.
c)
stars began doing fusion.
d)
the redshift was discovered.
6.
Our theory of the universe was confirmed by the discovery of:
a)
fusion.
b)
cosmic microwave background radiation.
c)
the Andromeda galaxy.
d)
the Doppler effect.
7.
Light waves that are stretched out by objects moving apart:
a)
have a shorter wavelength.
b)
travel faster than the speed of light.
c)
are invisible.
d)
appear more red.
8.
CMB stands for:
a)
Colorful Mystic Background Rehearsal.
b)
Cosmic Mini Butterfly Repellent.
c)
Cosmic Microwave Background Radiation.
d)
Cute Microwave Button Reversal.
9.
The temperature of the universe:
a)
is constant.
b)
varies between 20 to 6,000 degrees Fahrenheit.
c)
has increased to about 10,000 degrees Celsius.
d)
has cooled to about 2.7 Kelvin.
10.
The universe is ____________ years old.
a)
8.13 billion
b)
13.8 billion
c)
1.83 billion
d)
381 million
11.
The Big Bang:
a)
is NOT an explosion in space.
b)
is an expansion OF space.
c)
is our best explanation for the beginning of the universe.
d)
All of the above.
12.
The most abundant element in the universe today is:
a)
water
b)
hydrogen
c)
oxygen
d)
carbon
13.
The greater the redshift:
a)
the faster the galaxy is moving.
b)
the shorter the light waves.
c)
the bigger the galaxy.
d)
the closer the galaxy.
14.
What is true about these two galaxies?
a)
The Sombrero Galaxy is closer to us.
b)
The Pinwheel Galaxy is moving away from us more slowly.
c)
The Pinwheel Galaxy is moving towards us.
d)
The Sombrero Galaxy is not moving.
15.
What is true about these stars?
a)
Both of these stars are moving away from us.
b)
Both of these stars are moving towards us.
c)
Both of these stars are blueshifted.
d)
The star Sirius is closer to us.
16.
This image describes:
a)
The redshift.
b)
The CMB.
c)
The distribution of each element in the universe.
d)
The amount of time the universe has existed.
17.
This is a picture of:
a)
The CMB.
b)
The Milky Way.
c)
The universe in the future.
d)
A redshifted star.
18.
The universe is expanding. This means that:
a)
Galaxies are getting bigger.
b)
Atoms are getting bigger.
c)
The universe is creating more matter.
d)
The amount of space between galaxies is increasing.
19.
Without stars, we wouldn't have:
a)
Hydrogen
b)
Quarks
c)
Gold
d)
Protons
20.
A Hoberman Sphere is:
a)
A galaxy really close to the Milky Way.
b)
A good model for our expanding universe.
c)
A huge space telescope.
d)
A slang British insult.
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