31 Jan C. Radiative zone D

aQuestion 1 .

1. Which of the following statements about black holes is false?

A. A black hole sucks in matter like a vacuum cleaner.

B. Astronomers have never seen a black hole.

C. No light can escape from a black hole.

D. All of the mass in a black hole is concentrated in a single point.

Question 2 .

2. A small, rocky particle that moves through space and strikes a planet or moon is referred to as a/an

A. impact crater.

B. comet.

C. asteroid.

D. meteorite.

Question 3 .

3. The true brightness of an object is called its

A. magnitude.

B. viscosity.

C. intensity.

D. luminosity.

Question 4 .

4. Saturn’s rings are made mainly of

A. gas.

B. rock.

C. ice.

D. dust.

Question 5 .

5. The gases cast off by a dying star are called

A. planetary nebulae.

B. dark matter.

C. neutron clouds.

D. remnants.

Question 6 .

6. How far can light travel in one year?

A. 100 billion km

B. 30 million km

C. 10 trillion km

D. 300,000 km

Question 7 .

7. Which of the following is not part of the structure of a comet?

A. Nucleus

B. Coma

C. Dust tail

D. Head

Question 8 .

8. Material from which of the following solar occurrences can reach Earth, causing radio blackouts?

A. Prominence

B. Flare

C. Solar wind

D. Coronal mass ejection

Question 9 .

9. Where is our solar system located in the Milky Way?

A. At the edge of the disk

B. Within a globular cluster

C. Within the central bulge

D. Close to the supermassive black hole

Question 10 .

10. Which planet has an AU of 5.20?

A. Jupiter

B. Uranus

C. Earth

D. Mercury

Question 11 .

11. A light-year measures the _______ that light travels in 1 year.

A. time

B. velocity

C. luminosity

D. distance

Question 12 .

12. _______ contains “The Great Red Spot,” a storm twice as wide as Earth.

A. Jupiter

B. Mars

C. Uranus

D. Saturn

Question 13 .

13. When classifying stars, which color represents the star with the highest temperature?

A. Orange

B. Blue

C. Yellow

D. Red

Question 14 .

14. The _______ of a star determines its temperature and luminosity.

A. mass

B. location

C. density

D. width

Question 15 .

15. Which of the following is not a terrestrial planet?

A. Mars

B. Venus

C. Earth

D. Jupiter

Question 16 .

16. The greenhouse effect on which planet makes it the hottest planet in our solar system?

A. Jupiter

B. Mars

C. Venus

D. Mercury

Question 17 .

17. Which of the following is not a Galilean Moon?

A. Titan

B. Callisto

C. Io

D. Ganymede

Question 18 .

18. A star at the end of its life-cycle, composed of mostly carbon, is a

A. giant.

B. red dwarf.

C. nova.

D. white dwarf.

Question 19 .

19. Which of the following is not part of a star?

A. Corona

B. Photosphere

C. Radiative zone

D. Dark spot

Question 20 .

20. The Sun and most stars are made almost entirely of

A. oxygen and nitrogen.

B. helium and nitrogen.

C. helium and hydrogen.

D. hydrogen and carbon.