What is weather?
This is the amount of water vapor in the air.
humidity
What device is used to measure air pressure?
barometer
to predict future events or conditions, such as weather
forecast
This is the state of the atmosphere at a specific time and place.
weather
the force that an object exerts on another object
pressure
tool that measures temperature
thermemoter
This is water of any form that falls from the clouds.
precipitation
What causes air pressure?
the weight of air molecules pressing down on Earth
Which has place more water vapor in the air,
desert or forest?
forest
Who are meteorologists?
scientists who study and predict weather
What percentage of gases make up our atmosphere?
78% Nitrogen, 21% oxygen and 1% other gases
How are the meteorologist able to predict weather?
by collecting data or using tools
Why is knowing and predicting weather important?
to plan out activities
At what point does pressure decrease?
The higher you go up in the atmosphere, the lower the pressure becomes.
What are some factors that affect weather?
temperature, humidity, wind direction and speed, air pressure