Welcome to our new unit! First things first: visit the Weather Network website for Lethbridge (by clicking here) and record the information on the first page of your booklet. You'll do this every day this unit.
Next, watch the videos below and answer the questions in your booklet.
So far, we've discovered a few things:
- Air takes up space.
- Air pushes all the time even though we can't see it.
- That pushing of the air is called air pressure
You might be wondering why this matters at all in weather. Well, air pressure is what makes wind. If we have an area of low pressure (like when we forced all the air out of the bottle in the egg experiment), air wants to rush in and fill that space. Moving air is called wind!
Watch this next video to find out a little bit about measuring wind, then answer the rest of the questions in your booklet.