2 Water Cycle Vocabulary Evaporation- Solar energy causes water on Earth’s surface to change from a liquid to a gas.Most occurs over the ocean and large lakes.(Evapo) Transpiration- water vapor that enters the atmosphere when it is released from plants.Sublimation- process of converting a solid directly to a gas.Glaciers and snow caps.
3 Water Cycle Vocabulary Condensation- water vapor forms droplets on small particles in the air.Billions of these droplets make up clouds.As warm air rises, it expands and cools.Precipitation- When water droplets in clouds get too heavy, gravity causes them to fall to the ground as:Rain, snow, sleet, and hail.Rates of evaporation and precipitation are balanced.
4 Freshwater 97% is ocean water. Only 3% is freshwater. 2% is locked up in glaciers and ice caps.1% is usable by humansGroundwaterRiverslakes
5 Freshwater StorageGlaciers- form where more snow falls than melts each year.Ponds and Lakes- form in depressions in the land.These depressions are often caused by the weight of past glaciers that have melted.Atmosphere- tiny % of earth’s water is found in the form of clouds.
6 Streams and Rivers Runoff- water that flows over Earth’s surface. Eventually reach streams (or get absorbed by the ground as groundwater)Tributaries- many small streams that make up a river system.Watershed- area of land that contributes water to a river system.Also called drainage basins.
8 Water table- top of the saturated zone. Groundwater- water found underground within cracks, and between particles of rock and soil.most of Earth’s liquid freshwater is underground.Saturated zone- region where pore spaces are entirely filled with water.Water table- top of the saturated zone.Permeable rock- a rock that water can easily flow through.Aquifer- a permeable rock that is saturated with water.Impermeable rock- a rock that water cannot flow through.Bedrock is a type of these.