| A | B |
|---|
| sea breeze | forms during the day-wind goes from sea to land |
| land breeze | forms during the night-wind blows from land to sea |
| equator | imaginary line that divides the northern and southern hemisphere |
| nitrogen | most common gas in Earth's atmosphere |
| oxygen | makes up 21% of Earth's atmosphere |
| 78 | nitrogen makes up____% of Earth's surface |
| jet stream | narrow belt of strong wind |
| prevailing westerlies | responsible for most of the weather movement across the U.S. |
| sun | provides most of the Earth's energy |
| radiation | transfers heat by rays or waves |
| hydrosphere | a term that describes all the water on Earth's surface |
| condensation | process that changes water vapor to a liquid |
| evaporation | process that changes liquid to water vapor |
