| A | B |
|---|
| evaporation | the process of water changing from liquid to vapor |
| water cycle | the movement of water between the atmosphere and the earth's surface |
| condensation | the process of changing from a gas to a liquid |
| precipitation | the moisture that falls to the earth from the atmosphere |
| transpiration | the movement of water from inside a plant through its pores and into the atmosphere |
| element | matter that has only one kind of atom |
| atom | the basic unit of matter |
| particle | a tiny piece |
| ammonium | a form of nitrogen that some plants can absorb |
| nitrate | a form of nitrogen that most plants can absorb |
| weather | the moment by monent conditions in the atmosphere |
| climate | the average weather in a particular area |
| equator | the imagenary line halfway between the North ans South poles |
| tropics | areas that are closer to the equator |
| prevailing winds | the three major wind belts on earth |
| jet stream | a strong air current high in the atmosphere |
| air pressure | pressure caused by the wieght of the atmosphere |
| humidity | the amount of moisture in the air |
| meteorologist | a person who studies the weather |
| pangaea | the single landmass on Earth that began to break up |
| glacier | a thick mass of ice that covers a large area |
| radioisotope | a radioactive element that helps scientists determine the age of rocks |
| fossil | the remains of animals or plants found in rock |
| origin | the beginning |
