The temperature at which water changes to ice.
(Give both F & C degrees)
What is 32 degrees F or 0 degrees C?
100
The process by which a water vapor changes into a liquid.
What is condensation?
100
The border that is formed between two air masses when a warm air mass collides with a cold air mass.
What is a front?
200
A stream of water that flows like a river in the ocean.
What is a current?
200
An instrument that measures air pressure.
What is a barometer?
200
When water vapor cools and condenses on dust particles in the air, these are formed.
Clouds
200
The process by which water changes into water vapor.
What is evaporation?
200
A (high/low) pressure area will cause a rising barometer and will often indicate that the weather will be (colder/warmer) with a (low/high) chance of rain.
high, colder, low
300
The condition of the atmosphere at a particular time?
What is weather?
300
An instrument that measures rainfall amounts.
What is a rain gauge?
300
When water vapor turns directly into ice, it forms this type of precipitation.
Snow
300
The process by which heavy water droplets fall to Earth?
What is precipitation?
300
This kind of weather can be expected when a warm air mass moves over a cold air mass.
What is a steady rain?
400
The pattern of weather in an area over time.
What is climate?
400
Two responses needed...
1) An instrument that measures wind speed.
2) An instrument that measures wind direction.
What is an anemometer and a wind vane?
400
Water vapor that has condensed into small droplets near the ground is called this.
Fog
400
The process by which water collects in rivers, lakes, and oceans.
What is accumulation?
400
A weather phenomenon that causes the coastal waters to stay unusually warm.
What is El Nino?
500
A large body of air with the same temperature and humidity.
What is an air mass?
500
Two responses needed...
A __________ measures the amount of moisture in the air. The amount of moisture in the air is called _________.
hygrometer, humidity
500
The temperature at which water changes to a gas.
(Give both F & C degrees)
What is 212 degrees F or 100 degrees C.
500
The constant movement of water from Earth's surface to the atmosphere and back to Earth's surface.
What is the water cycle?
500
As water vapor rises higher and higher in the air, the water vapor (heats/cools) and then (evaporates/condenses) to form clouds.