Author Topic: NZLWN Quiz (Read 70016 times)

Babs · « **Reply #180 on:** May 31, 2014, 01:02:34 PM »

There were these two old codgerrs who had been trying to make a good drop of ale for years. Each brew turned out foul and got given to the cows to drink.

One day a neighbour called out to them that there was a new guy in town who was a whizz at making a good brew so they got in their trusty truck and high tailed it down to Phil's brewing shop.

He patiently listened to what they had been doing and gave them a few hints on what to do to solve the problem of the flat ale.

That night there was a huge explosion and the sky lit up for miles. People thought aliens were attacking but no it was our two brewers.

Back they went to Phil with singed eyebrows and hardly any hair and told him that they had followed his instructions and look what had happened. Phil put his head in his hands and when he had stopped laughing told the brewing pair that he had told them use carbon dioxide very sparingly but they thought the more the better!

So now you will find them attending brewing classes at Phil's brewing house and apart from pumping air bubble into their beer with a bicycle pump when their brew looks a bit flat, they are behaving themselves.

gabba · « **Reply #181 on:** May 31, 2014, 08:41:00 PM »

Thats a reasonable answer but not the one I was looking for. The large enough to appear bit isn't exactly clear enough. Babs, as always you are so close but not quite...

Apparently the forming of bubbles in beer is exactly the same as the formation of raindrops in a cloud - that is to say that the common process is condensation. Keep in mind here that many of the physical attributes observed in liquids are also observed in atmospheres, and in fact equations used in atmospheric physics also equally applies to liquids in motion.

So how do the bubbles form? Here's the answer I had

Quote

In both cases the bubbles ( in the case of beer and the droplets in the case of clouds) form around impurities, or tiny particles, such as a dust particle in the air or impurity in the beer. So, if both the beer and the atmosphere were completely free of impurities, they wouldn’t have anything to form around, and we wouldn’t have the bubbles and particles.

The nucleation(condensation) sites for beer bubbles are actually microscopic cracks in the wall of the bottle.

Something to ponder over when you imbibe in your next bubbly tipple

gabba · « **Reply #182 on:** May 31, 2014, 09:10:01 PM »

Tonights question, I thought I had better make it easy, and give you the answer!

Which of the following is not effected by wind chill, and why?

a. person b. dog c. car radiator d. bird

Babs · « **Reply #183 on:** May 31, 2014, 11:34:09 PM »

A bird as they fly high above it

beteljuice · « **Reply #184 on:** June 01, 2014, 01:47:02 AM »

C/ Car radiatior - it is an inanimate object and has no 'feelings'.

gabba · « **Reply #185 on:** June 01, 2014, 08:06:26 AM »

Beteljuice is correct , although the reason why goes back to the definition of wind chill , being the apparent temperature felt on skin. As a radiator has no skin then windchill is not a relevant measurement.

gabba · « **Reply #186 on:** June 01, 2014, 08:22:03 AM »

Intrepid was up this morning and was fogged in. But what type of fog was it? How many types of fog do you know of and can you provide a definition of each? ( there are at least 6).

Meteorological answers please, so answers like "foggy head after night out on the town" are not what I am after here! Winner is the person who can provide the most definitions.

intrepid · « **Reply #187 on:** June 01, 2014, 09:45:04 AM »

Well my fog was just when the dew point had just been reached about 5m above where we are. Not very thick but enough to create a halo around the street lights.

As for the other fog, I guys it depends on what brings out about. Temperature, pressure or wind speed, which is related to pressure, I guess.

JennyLeez · « **Reply #188 on:** June 02, 2014, 01:42:37 AM »

well I'll be......
Of recent I was scolded for using the word fog and advised there was no such thing, only low cloud $:-\$

Also just for interest's sake, Hamilton is supposedly one of the foggiest areas in the world.

intrepid · « **Reply #189 on:** June 02, 2014, 06:54:57 AM »

Who told you off?

On another note...there is also brain fog, which Barbara and I are most familiar with! Nothing to do with weather though...

So my list ogf fogs are:

sea fog
ground fog
mist
hill fog

gabba · « **Reply #190 on:** June 03, 2014, 07:14:09 PM »

Points to interpid this time round. Here are the ones I had

Types of Fog

(a) Evaporation or mixing fog
(b) Radiation fog
(c) advection fog
(d) upslope fog
(e) ice fog
(f) freezing fog

Is anyone interested in more questions, or do you want to give it a rest? Was kinda hoping a few more might join in....

Babs · « **Reply #191 on:** June 03, 2014, 07:48:10 PM »

More questions would be nice thanks

gabba · « **Reply #192 on:** June 04, 2014, 08:22:47 PM »

What is the difference between mist and fog?

JennyLeez · « **Reply #193 on:** June 23, 2014, 09:26:09 AM »

Fog is only low cloud. Fog is the only type of cloud that touches the ground.
Mist moisture, water, droplets same as steam.
Fog is thicker.
(I think )

gabba · « **Reply #194 on:** June 23, 2014, 12:20:27 PM »

Well done!

From Wikipedia (and I think NOAA have a similar definition)

The only difference between mist and fog is visibility.[1] This phenomenon is called fog if the visibility is one kilometre (1,100 yards) or less (in the UK for driving purposes the definition of fog is visibility less than 100 metres (UK Highway Code rule 226),[2] for pilots the distance is 1 kilometre). Otherwise it is known as mist.

gabba · « **Reply #195 on:** June 23, 2014, 12:29:47 PM »

Today's question:

What is minus 40 degrees Farenheit expressed as degrees Centigrade?

Rwood · « **Reply #196 on:** June 23, 2014, 09:02:40 PM »

-40 as well!

gabba · « **Reply #197 on:** June 24, 2014, 08:48:23 AM »

Correct!

Today's question

What is an analemma and where would you normally find one?

Hint: this has something to do with the sun

Babs · « **Reply #198 on:** June 24, 2014, 01:56:39 PM »

I had to Google this is that OK?

Its curve where you can see that sun every part of the day or something like that

gabba · « **Reply #199 on:** June 24, 2014, 09:20:19 PM »

Googling is cheating a bit, as otherwise it would be a competition as to who can google the fastest :-)

It wasn't an easy one though!

That said, where would you often find one. Further bonus points if you can explain why it is the shape it is

News:

Author Topic: NZLWN Quiz (Read 70016 times)