Science

1) Why can certain stars sometimes be identified as eclipsing binary stars?
Answer) B. They become dimmer at regular intervals

2) Which of the following is a major difference between elliptical galaxies and spiral galaxies
Answer) A. Elliptical galaxies have almost no gas or dust between the stars

3) Which of the following do all small objects in the four categories (Dwarf, Comet, Asteroids, and meteorites) have in common?
Answer) A. They orbit around the sun

4) Which of the following small objects are made of ice and dust?
Answer) B. Comets

5) If a scientist was tying to classify a star, and he had info on a star’s size and brightness, which other factor would help?
Answer) B. Mass

6) A protestor has a high enough _______ to become a star.
Answer) B. Mass

7) From the cosmic background radiation, what can scientists infer that the universe was like after the Big Bang?
Answer) B. Hot

8) Which of the following possible outcomes regarding the universe do scientists think is most likely?
Answer) A. The universe will continue to expand

9) Some constellations, such as Ursa Minor, are visible all year round while most appear part of the year. Explain why?
Answer) [Im not giving you a full answer because I don’t want anyone cheating. I’ll give you a hint ONLY] The earth axis rotates passing through the North and South Pole. Thus the constellations near the poles would be around—

10) How does a stars life begin?
Answer) [Same as #9] Nebula goes through accretion, IF a critical temp reaches the core, nuclear fusion starts and than —
Are 1-8 Correct?

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  1. 1. C
    2. A
    3. A
    4. B
    5. A
    6. B
    7. B
    8. A
    Idk about 9 and 10

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  2. IS IT RIGHT OR NAH

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