Skip to Content

IMBERBE#13: ASTRONOMY QUIZ (RV)

Enjoy, participate and learn from the quiz forum. Post your quiz here for others to enjoy as well

Moderator: RosemaryH

User avatar
bishop3006
Senior Virtual Ranger
Senior Virtual Ranger
Posts: 5598
Joined: Thu Nov 06, 2008 4:45 pm
Location: Pretoria

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby bishop3006 » Thu Sep 23, 2010 11:22 pm

I can only think that it is because Venus is on the inside track. But are you really sure that we can't see a full disc? When Venus is on the other side of the sun then we should be able to see a (almost 100%) full disc, shouldn't we?

Or is it something to do with the plane again? Can't remember whether it is Venus that is, typical woman :twisted: off on a tangent again! That may influence it. :hmz:
Marius
Hunter, nature lover, conservationist.

I believe that for man to survive, we must work with nature rather than against her. We need the land; the land doesn't need us. Too many people have lost sight of this fact. - Bruce Truter

User avatar
onewithnature
Distinguished Virtual Ranger
Distinguished Virtual Ranger
Posts: 22105
Joined: Tue Dec 23, 2008 5:22 am
Location: Midway between the infinite and the infinitesimal!

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby onewithnature » Fri Sep 24, 2010 4:28 am

:hmz: Anyone else?
EVERYBODY'S TR!
TR: A NEW DAY IS S-OWN
TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." (Groucho Marx)

User avatar
onewithnature
Distinguished Virtual Ranger
Distinguished Virtual Ranger
Posts: 22105
Joined: Tue Dec 23, 2008 5:22 am
Location: Midway between the infinite and the infinitesimal!

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby onewithnature » Sat Oct 02, 2010 7:18 am

No takers? Question too difficult for the cognoscenti? :hmz:
EVERYBODY'S TR!
TR: A NEW DAY IS S-OWN
TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." (Groucho Marx)

User avatar
Siobain
Virtual Ranger
Virtual Ranger
Posts: 5215
Joined: Wed Feb 25, 2009 9:38 pm
Location: Johannesburg

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby Siobain » Sat Oct 02, 2010 3:57 pm

We cannot see Venus when it is on the far side of the Sun, which is the only time it would be full from our perspective. Venus is either behind the Sun's disk or appears so close to the Sun as to render it un-viewable.
He is rich or poor according to what he is, not according to what he has. ~Henry Ward Beecher

User avatar
pantera leo
Virtual Ranger
Virtual Ranger
Posts: 1076
Joined: Thu Jun 19, 2008 12:53 pm
Location: Port Elizabeth

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby pantera leo » Sat Oct 02, 2010 4:08 pm

I'm with Siobain on this one! :thumbs_up:

Good to see you around the Quizzes again Siobain especially in broad daylight! :lol:

User avatar
onewithnature
Distinguished Virtual Ranger
Distinguished Virtual Ranger
Posts: 22105
Joined: Tue Dec 23, 2008 5:22 am
Location: Midway between the infinite and the infinitesimal!

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby onewithnature » Mon Oct 04, 2010 11:23 am

Siobain wrote:We cannot see Venus when it is on the far side of the Sun, which is the only time it would be full from our perspective. Venus is either behind the Sun's disk or appears so close to the Sun as to render it un-viewable.


Absolutely SPOT ON, Siobain!! :clap: :clap: :clap:

Bishop touched on the idea, but you have elucidated it correctly.
You are IT! :thumbs_up:

Bishop, I'm not sure about the female tangential influence (unique theory, though :lol: :lol: ), but I'm absolutely sure that we cannot see a full disc of Venus Earth at any time, although it gets pretty full. Here is a great picture why this is so, as explained by Siobain (from www.ifa.hawaii.edu/~barnes/ast110_06/rots/0520a.jpg):

Image
EVERYBODY'S TR!
TR: A NEW DAY IS S-OWN
TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." (Groucho Marx)

User avatar
bishop3006
Senior Virtual Ranger
Senior Virtual Ranger
Posts: 5598
Joined: Thu Nov 06, 2008 4:45 pm
Location: Pretoria

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby bishop3006 » Mon Oct 04, 2010 10:32 pm

Siobain, well done! :clap: Good to have you back. :thumbs_up:
Marius
Hunter, nature lover, conservationist.

I believe that for man to survive, we must work with nature rather than against her. We need the land; the land doesn't need us. Too many people have lost sight of this fact. - Bruce Truter

User avatar
Siobain
Virtual Ranger
Virtual Ranger
Posts: 5215
Joined: Wed Feb 25, 2009 9:38 pm
Location: Johannesburg

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby Siobain » Mon Oct 11, 2010 12:33 am

Thanks OWN and Bish! :D :thumbs_up:

Why is it, that in the Southern Hemisphere we will not see any planets near the south polar area, we will see them mostly in the northern part of the sky. And under which circumstances or conditions may we see a planet twinkle?
He is rich or poor according to what he is, not according to what he has. ~Henry Ward Beecher

User avatar
onewithnature
Distinguished Virtual Ranger
Distinguished Virtual Ranger
Posts: 22105
Joined: Tue Dec 23, 2008 5:22 am
Location: Midway between the infinite and the infinitesimal!

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby onewithnature » Mon Oct 11, 2010 1:43 am

S, by the "south polar area", do you mean the southern celestial pole in the sky?
EVERYBODY'S TR!
TR: A NEW DAY IS S-OWN
TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." (Groucho Marx)

User avatar
Siobain
Virtual Ranger
Virtual Ranger
Posts: 5215
Joined: Wed Feb 25, 2009 9:38 pm
Location: Johannesburg

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby Siobain » Mon Oct 11, 2010 1:54 am

Yes OWN, that is how I understand it.
He is rich or poor according to what he is, not according to what he has. ~Henry Ward Beecher

User avatar
onewithnature
Distinguished Virtual Ranger
Distinguished Virtual Ranger
Posts: 22105
Joined: Tue Dec 23, 2008 5:22 am
Location: Midway between the infinite and the infinitesimal!

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby onewithnature » Mon Oct 11, 2010 1:56 am

:thumbs_up:
EVERYBODY'S TR!
TR: A NEW DAY IS S-OWN
TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." (Groucho Marx)

User avatar
Imberbe
Distinguished Virtual Ranger
Distinguished Virtual Ranger
Posts: 14420
Joined: Wed Aug 31, 2005 12:28 am
Location: Pretoria, RSA

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby Imberbe » Sat Oct 30, 2010 11:11 pm

:whistle:
Imberbe = Combretum imberbe = Leadwood = Hardekool = The spirit of the Wildernis!

Want to know more about the SANParks Honorary Rangers? Visit www.sanparkshr.org


One positive deed is worth more than a thousand critical words.

User avatar
Imberbe
Distinguished Virtual Ranger
Distinguished Virtual Ranger
Posts: 14420
Joined: Wed Aug 31, 2005 12:28 am
Location: Pretoria, RSA

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby Imberbe » Tue Nov 16, 2010 12:30 am

:hmz:
Imberbe = Combretum imberbe = Leadwood = Hardekool = The spirit of the Wildernis!

Want to know more about the SANParks Honorary Rangers? Visit www.sanparkshr.org


One positive deed is worth more than a thousand critical words.

User avatar
onewithnature
Distinguished Virtual Ranger
Distinguished Virtual Ranger
Posts: 22105
Joined: Tue Dec 23, 2008 5:22 am
Location: Midway between the infinite and the infinitesimal!

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby onewithnature » Tue Nov 16, 2010 8:04 am

Planets follow the ecliptic, the path of the Earth about the Sun. The Sun itself follows a path through the sky which varies between 23.5 degrees north and south of the equator. Therefore, the planets do not move south of 23.5 degrees south of the equator, meaning that they will always be seen either close to the sun (inner planets) or much closer to the northern horizon than the southern (outer planets).

As to the second part of your question, Siobain, planets generally don't twinkle because they are close enough to earth to form a disc of light. However, if the atmospheric conditions are such that there is much turbulence in the atmosphere, then the light from a planet may dim and strengthen periodically, looking like it is twinkling.
EVERYBODY'S TR!
TR: A NEW DAY IS S-OWN
TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." (Groucho Marx)

User avatar
Siobain
Virtual Ranger
Virtual Ranger
Posts: 5215
Joined: Wed Feb 25, 2009 9:38 pm
Location: Johannesburg

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby Siobain » Tue Nov 16, 2010 10:12 am

Thanks OWN, once again you are correct, which makes you IT! :clap: :thumbs_up:
He is rich or poor according to what he is, not according to what he has. ~Henry Ward Beecher


Return to “Quizzes”