test

The average person only gets 7 right.
This is based on U.S. info, so use all lobes of your brain. This can be
more difficult than it looks - it just shows how little most of us really
see!

There are 25 questions about things we see every day or have known about all our lives. How many can you get right? These little simple questions are harder than you think– it just shows you how little we pay attention to the commonplace things of life.

Put your thinking caps on. No cheating! No looking around! No getting out of your chair! No using anything on or in your desk or computer!

Can you beat 20?? (The average is 7) Write down your answers as you go. Check answers (on the bottom) AFTER completing all the questions.

REMEMBER - NO CHEATING!!! BE HONEST!!! That means no looking at your phone or anything on your desk.

LET'S JUST SEE HOW OBSERVANT YOU REALLY ARE. - If not, just have fun! Here we go!

1. On a standard traffic light, is the green on the top or bottom?

2. How many states are there in the USA? (Don't laugh, some people don't know)

3. In which hand is the Statue of Liberty's torch?

4. What six colours are on the classic Campbell's soup label?

5. What two numbers on the telephone dial don't have letters by them?

6. When you walk does your left arm ! swing with your right or left leg?
   (Don't you dare get up to see!)

7. How many matches are in a standard pack?

8. On the United States flag is the top stripe red or white?

9. What is the lowest number on the FM dial?

10. Which way does water go down the drain, counter or clockwise?

11. Which way does a "no smoking" sign's slash run?

12. How many channels on a VHF TV dial?

13 . On which side of a women's blouse are the buttons?

1. Which way do fans rotate?

15 How many sides does a stop sign have?

1. Do books have even-numbered pages on the right or left side?

17 How many lug nuts are on a standard car wheel?

1. How many sides are there on a standard pencil?

2. Sleepy, Happy, Sneezy, Grumpy, Dopey, Doc. Who's missing?

3. How many hot dog buns are in a standard package?

21 On which playing card is the card maker's trademark?

22 On which side of a! Venetian blind is the cord that adjusts the opening
between the slats?

1. There are 12 buttons on a touch tone phone. What 2 symbols bear no
   digits?

2. How many curves are there in the standard paper clip?

3. Does a merry-go-round turn counter or clockwise?

I did the test, but I can not check as threr are no answers…

Ditto… I couldn't find any answers at the bottom of the list…..

In any event, here are some sites related to question #10:

Bad Coriolis

Discovery Online

Urban Legends

what we got to send you the answers to have them marked?
are you becoming a teacher antics.

As you all did i did my test on a peice of paper but have no time to enter them in this post.. will do so later.. should have done it in the 1st place.
then we can compair answers… I know i got more than 7

pooga, the closet geographer, cogently noted:
In any event, here are some sites related to question #10:

as you might guess, this is one of my favorites and a misconception i've been trying to dispel at every opportunity in almost all my classes. it keeps getting miscontrued by the media and pop culture (a great simpsons episode was based on the error – imagine lisa getting that wrong!). coriolis affecting small scale circulations is right up there with what you see rising from a kettle being water vapour (vapour is invisible). and don't even get me STARTED on "the greenhouse effect" … :)

I got 21 right - helps being old enough to remember the dial on a Tv set - but protesting #10 - it has 2 sides - front and back - but 8 edges - so i am claiming 22 right

Ah, but now you’re imposing initial conditions that the question doesn’t contemplate. Coriolis force does indeed work on small scale, temporal or spatial, if you impose no initial conditions. That’s like saying stick in a mixer and the swirl is chaotic. It doesn’t disprove the thesis, it just imposes special initial conditions.

I have never seen it be random (yes, I have watched) if no initial conditions are imposed.

If you believe the third site below, then toilets in the n hemisphere must be built to swirl in one direction, and in the s hemisphere in the opposite direction. Now why would they do that?

I have observed a sink full of water, with no inherent motion of its own, swirl in the exact same direction every time. Yes, on that scale the force is very small, but due to the viscosity of water the small initial force is transmitted to the water following, which adds to the following water’s coriolis force, etc., to the point it builds to a noticeable swirl, always in the same direction.

Unfortunately, I’ve never been in the southern hemisphere to test it there.

not to suggest that your experiments, observation nor reasoning are flawed, but…

either, your experiments, observations or reasoning are flawed. the coriolis parameter, which gives rise to this fictitious (applicable only to our rotating frame of reference) force, is quantifiable. its magnitude is:

f = 2 x v x m x omega x sin(phi)

where f = coriolis parameter
v = velocity of the object in motion
m = mass of the object
omega = rotational velocity of the earth (≈ 7.2921 × 10 −5. rad/sec)
phi = latitude at which the motion takes place

in my sink (yours, too, very likely) we are dealing with a mass of likely less than 10 kg. initial velocity of zero, but just to be fair, 1 cm/s (actually a pretty good clip for water in a sink). we'll say phi in your case is 50 degrees north (positive latitude by convention) which gives [sin(phi) = 0.766.

f = 2 x .01 m/s x 10 kg x 0.0000729/s x 0.766

f = 0.00001116828 kg m/s2
= 0.00001116828 N (Newton)

this is a VERY tiny force (a penny resting on a floor exerts 2.35g x 9.81 m/s2 = 0.0231 N – a couple thousand times more!). this force is easily overcome by almost any initial motion of the water or more likely, the shape of the basin.

the force exerted by coriolis only becomes more than negligible if you have very large masses, very long times or very large velocities (such as in weather systems or intercontinental ballistic missiles). but not in sinks, toilets or bathtubs (unless you have stuff going on in your bathroom that we can't begin to contemplate…).

the capper, of course, would be that coriolis tends to deflect motion to the RIGHT of its intended path in the northern hemisphere (opposite in southern). water moving toward your drain initially would tend to spin COUNTER-clockwise… not the answer that your quiz suggested. so that was wrong in any case.

As always, I have no meaningful contribution on this topic, but I found a couple of interesting sites that discussed it:
Interesting Also interesting