Oia Stars & Galaxies
Textbook: Glencoe Physical Science with Earth Science
- 1.The distance that light travels in one year, about 9.5 trillion kilometers, is called a _______________________.
- A.
Light-year
- B.
Light-distance
- C.
Light-speed
- D.
Speed of light
- 2.Any telescope that collects and amplifies radiowaves coming from objects in space is a ________________________.
- A.
Refracting telescope
- B.
Reflecting telescope
- C.
Radio telescope
- D.
Hubble Space Telescope
- 3.The surface layer of the Sun, that gives off light, is the ___________________.
- A.
Photosphere
- B.
Sunspot
- C.
Main sequence
- D.
Atmosphere
- 4.The cooler, darker areas of the Sun' s surface are called ___________________.
- A.
Photospherical
- B.
Sunspots
- C.
Dark matter
- D.
Dark energy
- 5.The study of how the universe began, what it is made of, and how it continues to evolve, is called _____________________.
- A.
Astrology
- B.
Planetary geology
- C.
Astronomy
- D.
Cosmology
- 6.Unseen mass that adds to the gravity of a glaxy, but cannot be detected (except for very indirectly), nor seen, is called ___________________.
- A.
Dark energy
- B.
Dark matter
- C.
Solar radiation
- D.
Massive
- 7.Energy that might be causing accelerated expansion of the universe is called _______________________.
- A.
Alternative energy
- B.
Dark energy
- C.
Dark matter
- D.
Red giant
- 8.The theory that all of the mass in the entire universe was together but then exploded, and has been expanding ever since, is the ___________________________.
- A.
Big bang theory
- B.
Copernican model
- C.
Specialty of Professor Carl Sagan
- D.
Specialty of Professor Stephen Hawking
- 9.We live in the Milky Way galaxy. Yet the Milky Way is not the most common type of galaxy. Choose below the ways that the Milky Way differs from the most common type of galaxy in the universe. Mark all four (4) correct answers.
- A.
The most common type of galaxy in the universe is the elliptical galaxy, but the Milky Way is a spiral galaxy.
- B.
Elliptical galaxies are spherical or ellipse-shaped. The Milky Way is flattened and has spiral arms.
- C.
Most (but not all) elliptical galaxies are dwarfs that contain fewer than one million stars; the Milky Way and most spiral galaxies are large. The Milky Way contains about 400 billion stars.
- D.
The Milky Way is the only galaxy scientists know of that has living organisms.
- E.
The Milky Way is smaller than most elliptical galaxies.
- 10.Listed below are two correct reasons for why dark matter and dark energy are called "dark." Mark two (2) correct answers.
- A.
Scientists know that the dark matter and dark energy absorb all light in the visible spectrum, which means they are black in color.
- B.
Dark matter and dark energy cannot be seen or detected directly (only indirectly).
- C.
The existence of dark matter and dark energy is inferred from observed effects -- not by seeing them.
Questions: 10 | Attempts: 1061 | Last updated: Nov 27, 2018
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Sample QuestionOur sun is
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Sample QuestionThis is a ___________.
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