This obeys the laws of Physics, but still unbelievable!

Ok - when was the last snack card challenge? Too long ago I hear you say. Well this one is a little more challenging than most. Can you calculate the velocity this Japanese guy needs to cover the 6.30m to break the world record? (hint: time of flight). Post your answers below (first name and tutor group). Correct answer wins a 100B snack card.

Only Matrix style Ping Pong can break all the laws of physics...........

Sylvester and Tweety

Watch this until Sylvester catches Tweety... wait for it, it's worth it.
After Tweety is caught, scroll down.






















That was an idiot test. How long did you watch?
0-2 sec - There's hope for you.
2-5 sec - Having a bad day?
5-10 sec - Are you maybe just a slow reader?
10-20 sec - Should you be at this school?
20 - 30 sec - It is recommended that you don't have children.
30 sec - 1 min - You are somewhat low down in the food chain.
1 - 2 min - The equivalent of the average house plant.
2 - 5 min - Good afternoon Jessica Simpson.
5 min -1 hr - Dead people score in this range.
1hr plus - Congratulations. You have a negative IQ.

Sorry ;)

More optical illusions!

How far can you swing?

WARNING: this game is highly addictive! No school so try this challenge - see if you can beat 453m (my top distance) - post yours as a comment below!

Optical illusion

This is powerful .................

click play in the bottom left of the slide (turn on your speakers)

How much weight can a bridge take?

Year 10 students find out in their Physics classes.

Could you complete the observations?

Bubble Painting

You will need:

•Paper
•Containers with wide tops (e.g. plastic cups, yoghurt pots)
•Powder or liquid paint
•Washing-up liquid
•Straws

What to do:

1.Put a squirt of paint and a squirt of washing-up liquid into one of the containers.
2.Add a little water and mix well until the mixture is runny enough to blow bubbles with.
3.Using the straw, blow into the mixture (Okay Mr Bluechops - who sucked instead of blowing?) until the container is so full of bubbles that they rise above the top rim.
4.Quickly take a piece of paper and lightly touch it onto the bubbles. As they touch the paper, the bubbles will burst. You will be left with a lovely pattern of circles. Leave to dry then build up layers of colour.

What’s going on?

Surface tension of water makes it impossible to stretch out to create a thin film or bubble on its own. There is a strong attraction between water molecules, preventing them from being stretched thinly enough to produce a bubble. However by adding soap to water, the soap reduces the surface tension and allows bubbles to form.
A soap film always pulls in as tightly as it can, just like a stretched balloon. A soap film makes the smallest possible surface area for the volume it contains. Most bubbles are spheres because it is the shape that has the smallest surface area compared to its volume.

How far would an air particle travel in a soap bubble in 1 second?

Imagine the air in a small soap bubble, about the size of the tip of your little finger. All those little molecules dashing about bumping into each other.

Watch the bubble for one second. Each molecule does a crazy zig-zag journey, colliding with other molecules and bouncing off the sides of the bubble. Suppose that you could measure the length of each of these journeys, and add them up. What do you think they would come to?

What is the total distance travelled by the air molecules inside a small bubble in one second? A hundred metres? A hundred kilometres? A thousand kilometres?

The actual answer is...one million light-years!
You don’t believe me? Read on...

To work out the total distance, we need to multiply the average speed of the air molecules by the number of molecules inside the bubble.

Physics textbooks tell us that the average speed is roughly 500 metres per second.

To work out how many molecules are in the bubble, start with the fact that one mole of a perfect gas occupies 22,400 cubic centimetres at everyday temperature and pressure.

Our bubble contains about one cubic centimetre of air, so there are 1/22,400 moles of gas in there.

Now one mole of anything contains 6 x 10^23 molecules (Avogadro’s number).

So the number of molecules in the bubble is 6 x 10^23 divided by 22,400, which comes to about 2.5 x 10^19 molecules.

And if each molecule travels 500 metres in one second, the total distance travelled is about 10^22 metres.

As a light year is about 10^16 metres, this means that the total distance travelled in one second by the molecules in the bubble is 10^6 (a million) light years.

What this result brings home is not the speed of the molecules – Concorde flew faster – but just how many of the little blighters there really are.

Observing Skills: Magnifying onion cells to see internal structures

Can you do this?

Observing skills: what are the short and long term effects of acid rain?

Who would have thought sand would behave like this?