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3. When a fragment from the meteoroid survives and makes it to the ground, the space rock is now called a____
A. asteroid
B. meteor
C. comet
D. meteorite

4. Its chemical compositions are ice, frozen gases such as ammonia, methane and caron
dioxide.
A comet
B. meteorite
C. meteoroid
D. meteor

5. It composes of silicates, iron and nickel.
A. meteor
B. asteroid
C. comet
D. meteoroid

6. The following are referred to by the astronomers as Near-Earth Objects EXCEPT
A. asteroid
B. meteor
C. comet
D. meteorite

7. Comets, like how planets do, move around the sun in their respective orbits. One of the
famous comets known to man is the Halley's comet which orbits the sun every 75 or 76
years. In the past, it was seen in the night sky during the years 1758, 1835, 1910, and
1986. When is its next possible appearance?
A 2016
B. 2050
C. 2062
D. 2020

8. One of the most famous comets of the 20th century and the only known short period
comet is Comet Halley. How long does it take for it to orbit the Sun?
A. 70 – 75 years
B. 71-75 years
C. 76 - 79 years
D. 80 - 85 years

9. Comets can be classified as long-period comets and short-period comets. What is the difference between a long-period comet and a short-period comet?

A. Long-period comets take 100 to 200 years to complete their orbit while short-
period comets take 1 to 75 years to complete their orbit.

B. Short period comets take 100 to 200 years to complete their orbit while long-
period comets take 1to 75 years to complete their orbit.

C. Long-period comets take 200 to hundred millions of years to complete their orbit
while short-period comets take 75 to 200 years to complete their orbit.

D. Short-period comets take 200 to hundred millions of years to complete their orbit
while long-period comets take 75 to 200 years to complete their orbit.

10. A comet travels around the sun on its orbit. At times it becomes closest to the sun and at times it is farthest from the sun. When does a comet have the longest tail and largest coma?

A. When it is moving slowly around the sun.

B. When it crosses the ecliptic.

C. When it is in the point of its orbit nearest the sun

D. When it is 1 AU from the sun.​

Sagot :

susadaleahmaeann

Answer:

3. B

4. A

5. B

6. B

7. C

8. B

9. A

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