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WorksheetsUnit 8 Test Practice - Galaxies and the Universe
Total questions: 27
Worksheet time: 47mins
According to Hubble's law, the farther away a galaxy is:
the faster it.appears to be moving toward us.
the slower it appears to be moving toward us.
the slower it appears to be moving away from us.
the faster it appears to be moving away from us.
About how long ago did the big bang occur?
5 million years ago
4.6 billion years ago
13.8 billion years ago
100 billion years ago
Where is the Sun found in our GALAXY?
In the central black hole.
Near the central black hole.
Outside of the galaxy.
In the middle of one of the spiral arms
According to the Doppler effect, what happens to light of objects moving away from you?
The light gets more blue-shifted.
The light gets more UV-shifted.
The lights more indigo-shifted
The light gets more red-shifted.
What does the parallax angle measure?
Temperature of stars and galaxies.
Distance to stars and galaxies.
Brightness of stars and galaxies.
Size of stars and galaxies.
What is a major difference in the composition of elliptical and spiral galaxies?
Elliptical galaxies have almost no gas or dust between stars.
Elliptical galaxies vary more in shape than spiral galaxies.
Spiral galaxies have almost no gas or dust between stars.
Spiral galaxies only contain old stars.
A star about eight to ten times more massive (larger) than our Sun will likely...
implode as a megasupernova.
explode as a planetary accretion.
explode as a supernova.
collapse to form a black hole.
An object formed from a massive star collapse so dense that not even light can escape its gravity is called
a neutron star.
a red giant.
a black hole.
a white dwarf.
Nucleosynthesis happens in the core of stars because...
of magic.
gravity is causing the core to expand outward.
fusion pressure is causing the core to collapse inward rapidly.
insanely high temperature and pressure force lighter atoms to fuse and make heavier atoms.
Which of the following correctly describes the movement of Earth, Moon and sun?
Sun and Moon revolve around Earth.
Moon revolves around Earth, Earth revolves
around sun.
Moon revolves around sun, Earth revolves around Moon.
Sun revolves around Moon, Moon revolves around Earth.
Why is astronomy considered a science and astrology is considered a pseudoscience?
Astrology is a pseudoscience because it accurately predicts the future.
Astrology is a science because it accurately predicts the future.
Astronomy is based on imaginative, unsupported guesses about reality.
Astronomy is based on testable ideas and repeatable observations and data that can be shared.
Seasonal changes in Earth's weather patterns and temperature are caused by...
Earth's wildly varying distance from the Sun as it orbits.
the Moon reflecting more light to Earth during summer months.
the Moon reflecting less light to Earth during summer months.
Earth's axial tilt of 23.5o influencing the angle sunlight hits different latitudes.
Orbiting objects in outer space made by humans are examples of ___________ satellites.
unnatural
artificial
natural
GPS
