1. Air pressure: Anti-cyclones (highs) and Depressions (lows)

2. Aims
To know and understand the main features of an anti-cyclone and depression
To know and understand the weather conditions associated with anti-cyclones and depressions

3. Starter
Complete the crossword on everything you have studied so far on weather and climate

4. Anti-cyclones
An anti-cyclone occurs because of changes in the air pressure.
Areas with above average pressure (high pressure) are called anti-cyclones and they usually bring good weather.
Cool air is sinking so there is few clouds – in the summer this means hot sunny weather and in the winter is brings fog and frost

5. Depressions Depressions bring with them clouds and rain
They develop where warm air meets cold air
The boundary where they meet is called a front
Depressions are areas of low pressure
Depressions usually from over the Atlantic Ocean and move from west to east

6. Depressions
Click on the red labels find out more!

7. Task
Using the Foundations Textbook pages complete activity sheets 2.5 and 2.6