Science 60 power words

Front

gravity

Back

a force that pulls objects toward each other

Front

rotation

Back

spin; turning around

Front

revolution

Back

movement around another object

Front

weathering

Back

process of rocks breaking down

Front

erosion

Back

process of moving weathered rock

Front

evaporation

Back

changing of a liquid into a gas

Front

condensation

Back

changing of a gas into a liquid

Front

precipitation

Back

water leaving the clouds and falling to Earth as rain, snow, sleet or hail

Front

climate

Back

average of all weather, through all seasons, of a region over a long period of time

Front

humidity

Back

amount of moisture in the air