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Astronomy Part 1 Review C

Test Description: Astronomy Part 1 topics

Instructions: Answer all questions to get your test result.

1) What effect do solar flares have on Earth?

Acause the tides Bcause auroras Ccause magnetic pole reversal Dcause global warming

2) What is the source of the Sun's energy?

Anuclear fision Bphotosynthesis Cchemical burning Dnuclear fusion

3) Star A is farther from Earth than Star B. Both stars have the same absolute magnitude.

AWe cannot determine either star's apparent magnitude. BBoth stars will have the same apparent magnitude. CStar A will have the greater apparent magnitude. DStar B will have the greater apparent magnitude.

4) About 90% of stars on the H-R Diagram are

Amain sequence stars Bred giants Csupergiants Dwhite dwarfs

5) Main sequence stars that are the brightest are

Aalso the hottest Bthe smallest Cthe very cool Dthe largest in diameter

6) Astronomers observations of red shifts in spectral lines of distant galaxies indicates

Athat Planet Earth is probably at the center of our universe Bthat the universe is contracting Cthat the universe is expanding Dthat Planet Earth is near the edge of our universe

7) You weigh 240 pounds on Earth. The moon's gravitational attraction is 1/6 that of Earth.

AYou would weigh 1440 pounds on the moon BYou would weigh 480 pounds on the moon CYou would weigh 240 pounds on the moon DYou would weigh 40 pounds on the moon

8) Stars with the highest surface temperature would be

Ablue Byellow Cred Dgreen

9) The difference in the brightness of two stars with the same surface temperature is

Arelated to their sizes Brelated to their colors Crelated to how they formed Drelated to their ages

10) The Hertzsprung-Russell Diagram shows the relationship between

Aparallax and temperature Babsolute magnitude and apparent magnitude Ctemperature and absolute magnitude Dapparent magnitude and parallax

*select an answer for all questions

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