The water cycle
What is the water cycle?
the movement of water between the atmosphere, land, oceans, and even living things
What is precipitation?
is any form of water that falls to Earth from clouds
What is weather?
the condition of Earth’s atmosphere at a certain time and place
What is relative humidity?
the amount of water vapor in the air compared to the total amount of water vapor the air can hold
What causes wind?
the uneven heating of earth's surface from the sun
what is evaporation?
occurs when liquid water changes into water vapor
How does water move on land and in the ocean?
runoff, infiltration, ice flow, and ocean circulation
What do we use to measure temperature?
thermometer
What is humidity?
the amount of water vapor in the air
true or false: air pressure and density are related
true
What is transpiration?
the release of water vapor into the air by plants
what is runoff?
when water flows downhill due to gravity
What do we use to measure air pressure?
barometer
What is the dew point?
the temperature at which more condensation than evaporation occurs
what is visibility?
the measure of the transparency of the atmosphere
What is sublimation?
when solid water changes directly to water vapor without first becoming a liquid
what is infiltration?
when water seeps into the ground
What do we use to measure relative humidity?
psychrometer
What cloud causes thunderstorms?
cumulonimbus
What can be used to collect weather data?
planes, ships, ground stations, weather buoys, satellites
What is condensation?
the change of state from a gas to liquid
What 2 main things does the water cycle transport?
energy and matter
What do we use to measure wind speed?
anemometer
What happens to air pressure as it gets higher up in the atmosphere?
it decreases
Why does density affect air pressure?
the more dense the air is the more air molecules are in one given amount of space, which means there are more molecules to exert air pressure
more dense=more air pressure