1. what types of gas was the first atmosphere made out of?
2. what was earth’s second atmosphere?
3. what was earth’s third atmosphere?
4. what is the composition of earth's modern atmosphere?
earth's atmosphere is made up of several different elements,

quiz time!
• what gases were in atmosphere #1?
• what gases were in atmosphere #2?
• what gases were in atmosphere #3?
• what gases are in atmosphere #4 (present day)?

5. what is the troposphere?
6. what is the stratosphere?
7. what is the ozone layer?
8. what is the mesosphere?
9. what is the thermosphere?
10. what is the exosphere?
quiz time!
• draw a line to match what happens in each layer with the drawing.

11. different types of heat transfer: what is radiation?
12. different types of heat transfer: what is conduction?
13. different types of heat transfer: what is convection?
14. how does radiation, conduction, and convection work together to heat the lower atmosphere?

15. does the sun heat the earth evenly?
16. how are winds created? how does land and water heat differently?
17. what is a sea breeze?
18. what is a land breeze?
19. what are seasonal wind changes?
20. what are high and low pressure air masses?
21. how does the different temperature at the equator and the poles affect global circulation?
22. does wind move in a straight line like it shows in this picture? .
23. how does the coriolis affect influence global circulation?
24. there are several things to remember about the coriolis effect.
25. what is unique about the horse latitudes and the doldrums?
26. what are the major wind belts?
27. what are isotherms?
28. what are isobars?
29. how do clouds form?
30. what makes it rain?
31. what determines whether it is rain or snow?