Weather instruments
This measures temperature
thermometer
A continental air mass forms over
land
Most weather occurs in this layer of the atmosphere
troposphere
Most of the water on Earth comes from these
oceans
The amount of water vapor in the air is called
humidity
This measures air pressure
barometer
A maritime air mass forms over
water/oceans
The imaginary line separating the northern and southern hemisphere
equator
The natural process by which water is recycled between Earth's surface and the atmosphere
water cycle
White puffy clouds that bring good weather
cumulus
This measures the humidity in the air
hygrometer
What moves air masses?
wind
The prediction of future weather
forecast
The changing of liquid water to water vapor (gas)
evaporation
Feather, wispy clouds you see in good weather (rain or snow may be on the way)
cirrus
This measures wind speed
anemometer
This type of air mass is cold
polar
Moisture that falls to the ground as rain, snow, sleet or hail
precipitation
The evaporation of water vapor from plant leaves
transpiration
Smooth, gray clouds that block the sun, usually bring light drizzle or rain
status
This measures wind direction
wind (weather) vane
This type of air mass is warm
tropical
Scientist who studies the atmosphere and the weather that takes place there
meteorologist
This occurs when water changes from a gas to a liquid
condensation
Thick cloud of water droplets near the Earth's surface, can make it difficult to see
fog