Factors of Weather Water in the Atmosphere Water

Factors of Weather Water in the Atmosphere Water Cycle

Magic School Bus- Water Cycle! �Magic School Bus https: //www. youtube. com/watch? v=1 PDx 773 RPR 0 �start at 4: 50 to 6: 00 �skip to 6: 39 until 8: 18 � 8: 44 to 10: 35 � 11: 05 until 12: 18. �Feel free to watch the entire episode if you would like. These times, though, will cover the material. �Draw the water cycle from the video before going on

The Water Cycle Photo credit: https: //inspiration 2 learn. wikispaces. com/The+Water+Cycle

Water Cycle - The amount of water in the atmosphere is not constant. -The water cycle is the movement of water between Earth’s surface and the atmosphere. -Water enters the atmosphere by evaporation in the form of water vapor. -Evaporation is when liquid water molecules change state and enter the air as gas called water vapor.

Water Cycle -Water can evaporate from water bodies and living organisms, like plant leaves. -The water cycle includes the condensation of water vapor into clouds. -The water falls back to Earth in the form of precipitation -rain and snow (solid and liquid states). -The water makes its way through the ground to large water bodies.

The Water Cycle -Water vapor is a gas! -Then, can you see it?

The Water Cycle -Nope! We have to be careful when we think about evaporation and condensation. SO, what state of water are we seeing in this picture of a humidifier? Photo credit: www. aromatherapy. com

Water Cycle Vocabulary: - Evaporation: the process by which a substance changes states from liquid to gas - Condensation: the process by which a substance changes states from gas to liquid - Water cycle: the cycle by which water evaporates to enter the atmosphere, condenses into clouds and falls to the Earth’s surface as precipitation and starts again. - Water vapor: the gaseous form of water

Water Cycle Summary : The water cycle, moving water from Earth’s surface to the atmosphere and back again. -The water cycle is a process by which liquid water evaporates from Earth’s surface and enters the atmosphere as water vapor. -In the atmosphere, the water vapor condenses to form clouds and then returns to Earth’s surface as rain and snow.

Humidity • Humidity is the measure of water vapor in the atmosphere • temperature impacts how much water vapor the air can hold. • Warm aid holds more water vapor than cold air. • Why do you think this is? • Relative humidity = percentage of water vapor in the air compared to how much water vapor the air can contain at a given temperature • Saturated air: Air with a relative humidity of 100% = holding the max the temperature will allow. This is known as the dew point- precipitation occurs (think dew)

Relative Humidity Photo credit: www. Physical. Geography. net