Astronomy quiz
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Science forum no people, so moving the questions here.
http://www.sgforums.com/?action=thread_display&thread_id=170264
Just read the questions there and post your answers here. -
Continue from the last thread
Question 8
The appearance of the sky changes during the night because of Earth's rotation and orbit. Every night the stars appear a little farther:
a) East
b) West
c) North
d) South -
Question 9
A star rises about 4 minutes earlier each evening. How long will it take for the sky to look the same again as it does tonight in your viewing area ?
a) 6 months
b) 24 months
c) 16 months
d) 12 months -
Question 10
The ecliptic is:
a) A bad hair day.
b) A moon or sun eclipse.
c) The apparent path of the sun against the background stars during the year .
d) The apparent path of the moon against the background stars during the month. -
Originally posted by ndmmxiaomayi:
hmm west?
Continue from the last thread
[b]Question 8
The appearance of the sky changes during the night because of Earth's rotation and orbit. Every night the stars appear a little farther:
a) East
b) West
c) North
d) South[/b] -
Originally posted by ndmmxiaomayi:
6 mths?
[b]Question 9
A star rises about 4 minutes earlier each evening. How long will it take for the sky to look the same again as it does tonight in your viewing area ?
a) 6 months
b) 24 months
c) 16 months
d) 12 months[/b] -
Question 11
The Vernal Equinox is:
a) On May 21st
b) About March 21st
c) The Sun's position as it crosses the celestial equator going North.
d) The Sun's position as it crosses the celestial equator going south.
e) a and d.
f) b and c. -
Question 12
Star maps are useful for the rest of your life. However, they go out of date hundreds of years from now due to:
a) Recession.
b) Precession.
c) Depression
d) Repression -
CorrectOriginally posted by RaTtY81:hmm west? -
Nope. Try again or guess again.Originally posted by RaTtY81:6 mths?
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Question 13
A sidereal day is:
a) the time interval for 1 Earth rotation using the Sun for reference.
b) The time interval of Earth's rotation using the stars for reference.
c) Is 23 hours, 56 minutes and 4 seconds long.
d) None of the above.
e) All of the above.
f) b and c above. -
Question 14
For each of the following references used on a terrestrial globe , list the corresponding name on the celestial sphere:
a) Equator
b) North Pole
c) South Pole
d) Latitude
e) Longitude
f) Greenwich, England
This is a hard question. There's a lot of astronomy terms involved. Try to look at some of the posts for hints for answers to some parts of this question. -
Question 15
Match where you might be on Earth with the correct description of the stars:
a) The stars seem to move along circles around the sky parallel to your horizon.
b) The stars rise at right angles to the horizon in the east and set at right angles to the horizon in the west.
c) Vega practically crosses your zenith.
d) Alpha Centauri is always above your horizon.
e) Polaris appears about 30 degrees above your horizon.
Choices:
1) Antarctica (below 61.5 degrees south)
2) Equator
3) Jacksonville, FLA, USA (30 degrees 22' N)
4) North Pole
5) Sacramento, CA, USA (38 degrees 35'N)
Another hard one. -
Question 16
Where on Earth would you have to be to have the Sun pass directly across your zenith at the time of the :
a) vernal equinox ?
b) Summer solstice ?
c) winter soltice ?
Do a search on the meaning of the terms to find out the answer.
The words are zenith, vernal equinox, summer solstice and winter solstice. -
Question 17
Why is a solar day about 4 minutes longer than a sidereal day ?
This is too obvious. Use google will find out answers. -
Run out of questions liao. But I think got enough for you guys to answer. Have a nice time answering!!!
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Originally posted by ndmmxiaomayi:
d
[b]Question 9
A star rises about 4 minutes earlier each evening. How long will it take for the sky to look the same again as it does tonight in your viewing area ?
a) 6 months
b) 24 months
c) 16 months
d) 12 months[/b]
-
Originally posted by ndmmxiaomayi:
a
[b]Question 10
The ecliptic is:
a) A bad hair day.
b) A moon or sun eclipse.
c) The apparent path of the sun against the background stars during the year .
d) The apparent path of the moon against the background stars during the month.[/b]
c lah -
Originally posted by ndmmxiaomayi:
f
[b]Question 11
The Vernal Equinox is:
a) On May 21st
b) About March 21st
c) The Sun's position as it crosses the celestial equator going North.
d) The Sun's position as it crosses the celestial equator going south.
e) a and d.
f) b and c.[/b] -
Originally posted by ndmmxiaomayi:
b
[b]Question 12
Star maps are useful for the rest of your life. However, they go out of date hundreds of years from now due to:
a) Recession.
b) Precession.
c) Depression
d) Repression
[/b] -
Originally posted by ndmmxiaomayi:
f
[b]Question 13
A sidereal day is:
a) the time interval for 1 Earth rotation using the Sun for reference.
b) The time interval of Earth's rotation using the stars for reference.
c) Is 23 hours, 56 minutes and 4 seconds long.
d) None of the above.
e) All of the above.
f) b and c above.[/b] -
Originally posted by ndmmxiaomayi:
celestial equator?
[b]Question 14
For each of the following references used on a terrestrial globe , list the corresponding name on the celestial sphere:
a) Equator
b) North Pole
c) South Pole
d) Latitude
e) Longitude
f) Greenwich, England
This is a hard question. There's a lot of astronomy terms involved. Try to look at some of the posts for hints for answers to some parts of this question.[/b]
celestial north pole?
celestial south pole?
declination?
right ascension?
prime meridian? -
Originally posted by ndmmxiaomayi:
4, 2, 5, 1, 3
[b]Question 15
Match where you might be on Earth with the correct description of the stars:
a) The stars seem to move along circles around the sky parallel to your horizon.
b) The stars rise at right angles to the horizon in the east and set at right angles to the horizon in the west.
c) Vega practically crosses your zenith.
d) Alpha Centauri is always above your horizon.
e) Polaris appears about 30 degrees above your horizon.
Choices:
1) Antarctica (below 61.5 degrees south)
2) Equator
3) Jacksonville, FLA, USA (30 degrees 22' N)
4) North Pole
5) Sacramento, CA, USA (38 degrees 35'N)
Another hard one. [/b] -
Originally posted by ndmmxiaomayi:
equator
[b]Question 16
Where on Earth would you have to be to have the Sun pass directly across your zenith at the time of the :
a) vernal equinox ?
b) Summer solstice ?
c) winter soltice ?
Do a search on the meaning of the terms to find out the answer.
The words are zenith, vernal equinox, summer solstice and winter solstice. [/b]
tropic of cancer
tropic of capricorn -
Originally posted by ndmmxiaomayi:
There are 366.2422 sidereal days in a tropical year, but 365.2422 solar days, resulting in a sidereal day of 86,164.091 seconds (or 23 hours, 56 minutes, 4.091 seconds). The reason there is one more sidereal day than "normal" days in a year is that the Earth's orbit around the Sun offsets one sidereal day, giving observers on Earth 365 1/4 days, even though the planet itself rotated 366 1/4 times.
[b]Question 17
Why is a solar day about 4 minutes longer than a sidereal day ?
This is too obvious. Use google will find out answers.[/b]