Author Topic: Astronomy Quiz!  (Read 36282 times)

Alice

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Astronomy Quiz!
« on: August 02, 2007, 11:15:55 am »
OK, I got this idea off a Harry Potter forum, but it was a great success there and can be equally so here.

I thought we could have loads of fun with a little quiz - short questions and answers, NOT a Wiki or Last Word sort of thing - like a pub quiz on the subjects of astronomy and space science. Reply to posts with an answer and another question. Let's have hard questions and easy ones, so everyone can be involved. Think how our minds will be filled as we read! Think of the masses of useless asides we can throw at our pupils, Gill and Bunny!

OK, we'll start with an easy one:

Q: What's the name of the nearest star to the Sun?

BunnyBB

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Re: Astronomy Quiz!
« Reply #1 on: August 02, 2007, 02:58:28 pm »
Alpha or proxima centauri -
...
..
.

"It doesn't matter if it Feels good. What matters is if it's True."

Carl Sagan. May 3 1996.


Alice

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Re: Astronomy Quiz!
« Reply #2 on: August 02, 2007, 03:10:41 pm »
Yep. I remember scaring the hell out of my Science teacher by knowing that in year 8 (she didn't). But now it's your turn to ask a question for someone else too!

Infinity

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Re: Astronomy Quiz!
« Reply #3 on: August 02, 2007, 04:45:23 pm »
Do we have to promise not to use the internet for the answers!

Here's one:

Q: How long is a day on Venus (relative to ours)

No cheating, but answer is here if you're really struggling! http://www.sciencemonster.com/planets_venus.html

Alice

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Re: Astronomy Quiz!
« Reply #4 on: August 02, 2007, 06:55:26 pm »
Don't see any reason why people shouldn't use the Internet for answers! It's just for fun! Nice question. Now, who's going to answer it and come up up with an equally good one?

serpens

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Re: Astronomy Quiz!
« Reply #5 on: August 02, 2007, 07:08:05 pm »
Let's see if I remember correctly. 283 days?

Pharun

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Re: Astronomy Quiz!
« Reply #6 on: August 02, 2007, 07:13:17 pm »
I think its a little less something in the range of 250.
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Alice

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Re: Astronomy Quiz!
« Reply #7 on: August 02, 2007, 07:45:58 pm »
Ask a Q, too, folks!  :)

starfinder-1

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Re: Astronomy Quiz!
« Reply #8 on: August 02, 2007, 08:11:09 pm »
243.01 earth days!Here's an easy one , How far is the moon from Earth? :)

Alice

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Re: Astronomy Quiz!
« Reply #9 on: August 02, 2007, 09:08:58 pm »
93 million miles!  :) or roughly a quarter of a million kilometres!

Here's a harder one! What is the Chandrasekhar limit?

serpens

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Re: Astronomy Quiz!
« Reply #10 on: August 02, 2007, 09:20:52 pm »
It's an upper limit of a white dwarf's mass, around 1.4 solar masses if my memory doesn't fail me this time.

My question: who discovered the four largest Jupiter's satellites independently from Galileo?

Infinity

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Re: Astronomy Quiz!
« Reply #11 on: August 02, 2007, 09:42:51 pm »
I think that was Marius, who gave them their greek names.

(Alice were you teasing us earlier on the Earth – Moon distance 93 million miles! checking that we are paying attention)

Q: Name 3 planets in our solar system that do something differently than all the others, and what is it that they do?

suprtrkr

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Re: Astronomy Quiz!
« Reply #12 on: August 02, 2007, 10:29:57 pm »
Unfortunately, I can't answer, or at least I can only think of one:

Mercury is tidally locked with the Sun.

That's all I can think of off the bat, but just for a funny, I'll toss out two more.

Earth supports Human life, and
Pluto got demoted  ;D

Not gonna ask a question, though, since I didn't fairly answer yours...

Carlos

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Re: Astronomy Quiz!
« Reply #13 on: August 03, 2007, 02:12:24 am »
Mercury is tidally locked with the Sun.

Not quite - It has a 'year' of 88 Earth days, and a 'day' of 58 Earth days

Not sure if these are what Infinity is looking for, but here's 3 things that are unique to one specific planet....

Venus - It's 'day' (243 Earth days) is longer than it's 'year' (224 Earth days) - and it also spins 'backwards' compared to the others.
Uranus - Spins on it's side - It's rotational axis is pretty close to it's orbital plane - all the others are nearer to 'upright' than 'sideways'
Saturn - It would float in water (if you could find a large enough pool of water)
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Infinity

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Re: Astronomy Quiz!
« Reply #14 on: August 03, 2007, 08:21:20 am »
Carlos, you are on the right track, so to keep the quiz moving, Venus, Uranus and Pluto (the dubious planet) all spin in the opposite direction to the others.

Anyone like to post another question?