Describe components of the universe, including stars, nebulae, and galaxies, and use models such as the Hertzsprung-Russell diagram for classification;
Recognize that the Sun is a medium-sized star located in a spiral arm of the Milky Way galaxy and that the Sun is many thousands of times closer to Earth than any other star;
Identify how different wavelengths of the electromagnetic spectrum such as visible light and radio waves are used to gain information about components in the universe; and
Research how scientific data are used as evidence to develop scientific theories to describe the origin of the universe.
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Q 1/10
Score 0
The Milky Way galaxy is described as a disk of stars orbiting a central point on the disk. Which of these best explains why people on Earth cannot see the entire shape of the Milky Way?
30
The stars in the center of the galaxy are extremely small.
Earth is a part of this galaxy
The center of the galaxy consists of a dense cluster of stars.
Many more stars exist outside the galaxy.
Q 2/10
Score 0
The Hertzsprung-Russell diagram below shows how the brightness, surface temperature, and color of stars are related. Which of these observations of Barnard’s Star is most likely accurate?
30
Barnard’s Star is brighter than the sun, has a surface temperature below 5,300 K, and is yellow.
Barnard’s Star is less bright than the sun, has a surface temperature above 3,800 K, and is red.
Barnard’s Star is brighter than the sun, has a surface temperature above 5,300 K, and is yellow.
Barnard’s Star is less bright than the sun, has a surface temperature below 3,800 K, and is red.
10 questions
Q.
The Milky Way galaxy is described as a disk of stars orbiting a central point on the disk. Which of these best explains why people on Earth cannot see the entire shape of the Milky Way?
1
30 sec
8.8a
Q.
The Hertzsprung-Russell diagram below shows how the brightness, surface temperature, and color of stars are related. Which of these observations of Barnard’s Star is most likely accurate?
2
30 sec
8.8a
Q.
Why does Earth get more energy from the sun than from all the other stars in the universe combined?
3
30 sec
8.8b
Q.
Based on your knowledge of our solar system, which planet would take the least amount of time to orbit the star?
4
30 sec
8.8b
Q.
Which statement about stars is correct?
5
30 sec
8.8b
Q.
Quasars are extremely distant celestial bodies. Investigators using a special telescope determined that a certain quasar was emitting waves with a frequency of 1 4. 1 × 109 Hz. An electromagnetic spectrum is shown. The investigators were most likely using a telescope that detects —
6
30 sec
8.8c
Q.
What instrument collects electromagnetic radiation from objects and concentrates it?
7
30 sec
8.8c
Q.
The table lists the distances of some of the nearest stars. Based on the table, a student used a measuring tape to model the distances between the sun and these nearby stars. The sun was at the starting point. Proxima Centauri was at the 10 m mark. Which star was closest to the 20m mark in this model?
8
30 sec
8.8d
Q.
Which statement best describes evidence of the Big Bang Theory?
9
30 sec
8.8d
Q.
Why is the BIg Bang Theory considered the most scientific accepted theory?
