Air flow.

When you drive a car do you notice that there is a fan in the front? This is because without that fan air can successfully move around the vehicle without lifting it off the ground. As you may notice Volvo's do tend to have a higher fan this is because if someone were to fall in the road you wouldn't get caught under the car, not because of the air flow.

Turbulent:

This is somewhat of a crazy air flow, which means there is air flowing in ALL DIRECTIONS. You may notice that when you are in an airplane that it sometimes becomes bumpy, this is because the air surrounding the air craft is going in all directions.

Linear:

The air moves in one steady direction.

Cars tend to have both turbulent and linear wind patterns this means that in general the top layer of air the flies over top the car is linear and that the air flow near the bottom of the car is turbulent.

Any questions about the topics? Then consult your notes, myself, friends, or Mr. Foster. If you are still confused refer to the Internet.

Class- January 6th 2010

Hey everyone,
Today we talked about many things including particles, your science presentations which were due on the 18th, and fluids.

Starting with the science presentations, they will not be counted late until friday so please hand it in. Remember every day after the due date will have 10% taken off of it.

Particles! Today we talked about the particle theory which is below:

1. Matter is made up of tiny particles.
2.These particles are constantly moving.
3.Particles and Matter are held together by a very strong electric force.
4.There are empty spaces between the particles and matter that are very large when compared to the particles themselves.
5.Each substance has unique particles that are different from other particles and substances.
6.Temperature effects the speed of particles. The higher the temperature the higher the speed of the particles.

Remember all pure substances are homogenous.
Imagine a labradoodle (Labrador, and Poodle) this breed of dog would technically speaking be heterogeneous because the animal is made up of two different substances, whereas a purebred golden retriever is homogenous because it is made up of the same substances.

Ok, gold for example is a pure substance because it is built up of the same particles.
Gold in the periodic table is AU, it is easier for most people to remember Amazingly Unique, because those two words might help you remember the term AU, and gold is unique.