1. Unit 2: “Earth and Space Science”
Chapter 6 “Weather”

2. insolation
the solar energy that reaches a planet

3. atmosphere
All of the gases that surround the earth

4. troposphere
The layer of the atmosphere closest to Earth’s surface

5. weather
The condition of the atmosphere at a particular time and place

6. Air pressure
The force put on a given area by the weight of the air above it

7. humidity
The amount of water vapor in the air

8. hygrometer
A tool used to measure the relative humidity

9. Relative humidity
measures the amount of water vapor in the air compared to the total amount the air could hold at that temperature

10. barometer
A tool that is used to measure air pressure

11. global wind
wind that blows steadily over long distances in a predictable direction

12. sea breeze
the movement of air from the water to the land

13. land breeze
the movement of air from the land to the water

14. anemometer
a tool that measures wind speed

15. isobar
a line on a weather map that connects places that have the same air pressure

16. air mass
a large region of the atmosphere in which the air has similar properties

17. front
the boundary where two air masses meet

18. weather map
a map that shows the weather in a specific area at a specific time