Lessons 5-7

Lesson 5

In lesson 5 we learned how to convert celcius to kelvin and vice versa. The equation for this is K=C+273 or C=K-273. We also learned about the properties of gas particles. The particles are in constant motion, traveling in a straight line that can only change direction when the particle hits another particle or wall. All the particles travel at different speeds. When the temperature increases the speed of the particles increase.

Practice Problems
1. Absolute zero is 0 degrees kelvin. It is a hypothetical temperature because it has never been reached.
7A. 373 degrees kelvin

Lesson 6

Lesson 6 talked about Charles Law, which states that in a gas, volume is proportional to temperature represented by a constant: k. When the temperature increases so does the volume but the density decreases. That is why hot air rises instead of falls.

Practice Problems

Lesson 7

Today we learned about weather fronts. In both cold and warm front there are clouds and a chance of precipitation. When cold air overtakes the warm air it is a cold front. When warm ait overtakes the cold air it is a warm front. These are pictured below.



Practice Problems
1. Hot air is less dense than cold air so it rises above cold air.
4. Colder weather with clouds and a chance of precipitation