| A | B |
|---|
| Water Vapor | water in the form of an invisible gas |
| Humidity | amount of water vapor in the air |
| solid, liquid, gas | 3 states of matter |
| solid | definite shape & volume |
| solid | particles are packed together tightly |
| liquid | definite volume but takes the shape of its container |
| liquid | particles are looser & slide past each other |
| gas | no definite shape or volume |
| gas | particles move around freely |
| evaporate | changes from liquid to gas |
| evaporate | when water is heated it changes to water vapor |
| evaporate & condense | 2 ways water changes state |
| condense | changes from a gas to a liquid |
| condense | ex. when water vapor is cooled, liquid dew drops form on plants |
| 100 C /212 F | water boils |
| 0 C / 32 F | water freezes |
| Precipitation | any form of water that falls to the earth from a cloud |
| run-off | water that falls onto land and drains off the surface |
| weather | the outside conditions in a place at a particuliar time |
| climate | the outside conditions in a place over many years |
| greenhouse effect | the process by which gases in the atmosphere absorb heat & keep the earth warm |
| 60 F colder | without the greenhouse effect the earth would be this temperature |
| days are longer & warmer | when earth is tilted TOWARDS the sun |
| days are shorter; colder | when the earth is tilted AWAY from the sun |
| how water affects temperature - land near water | less temperature changes from day to night; warmer climate |
| how water affects temperature - land not near water | more temperature changes from day to night; colder climate |
| how ocean current affects temperature | warm & cold water is moved towards the land |
| how wind patterns affect temperature | wind pushes weather conditions over the earth |
| 2 sources of vapor in the air | plants & large bodies of water |
| natural events that can change climate & weather | volcanic eruptions, el nino, global warming |
| el nino | temperature in the pacific ocean increases |
| global warming | an increase in the earth temperature |
| glaciers melting, land near oceans could flood & severe storms, floods or droughts | global warming effect earth by these 3 things occuring |
