Earth's Water
What fraction of Earth's surface is covered with water
True or false: Earth's water is always made new each day.
False- water is recycled!
True or false: cooler air sinks
What tool is used to measure air pressure?
barometer
Why is freshwater an important resource?
Gives plants and animals water to drink and grow. Allows farmers to farm, etc
What are the three different states of water?
liquid, solid, gas
What is the water cycle?
the never ending movement of water on earth's surface to atmosphere
What is air mass?
What is air pressure?
air mass- a body of air
air pressure- the pushing force of air
What is the difference between an anemometer and wind vane?
anemometer- measures wind speed
wind vane- measures wind direction
What are three different kinds of precipitation?
rain, snow, sleet
What percent of water is found if oceans?
What percent of water is found in rivers and lakes?
oceans- 97%
lakes and rivers- 1%
What is evaporation?
the process of a liquid changing from water to water vapor
move, interact
__________, _________, and ________ are three basic weather factors that affect weather
temperature, air pressure, and water
What is humidity?
the amount of water vapor is the air?
Where does the salt found in oceans come from?
rocks and soils from land
What is condensation?
The process of water vapor becoming liquid water
What is a cold front?
What is a warm front?
cold front- a cold air mass bumps into warm air
warm front- a warm air mass bumps into cold air
When air pressure is low, what kind of weather will you have?
damp and cloudy
How does the sun create clouds?
sun heats water, water evaporates and becomes vapor in the sky forming clouds.
Why is there saltier water near deserts and not by the north/south pole?
it's warmer near the deserts, so water evaporates faster, leaving more salt behind. The north and south pole are colder, so less water water is disolved.
Condensation, they are made of water droplets
What is the difference between cumulus clouds and stratus clouds?
cumulus- white and fluffy (like cotton candy)
stratus - flat, layered, close to earth's surface
When air pressure is high, what weather will you have?
dry and clear
DRAW and LABEL the four parts of the water cycle- include evaporation, condensation, precipitation, and storage
evaporation --> condensation --> precipitation --> storage --> evaporation