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Arizona Weather Facts
Weather Systems
Clouds
Planet Earth
Miscellaneous
100
This tornado-like whirl is very common on hot days with calm winds, especially in Arizona.
What is a dust devil?
100
This is a boundary that brings cooler air to a location.
What is a cold front?
100
High, wispy clouds that are sometimes called "mare's tails".
What are cirrus?
100
More than 70% of earth's surface is covered by this.
What is water?
100
The study of weather.
What is meteorology?
200
This is the main threat associated with severe thunderstorms during the monsoon season in Arizona.
What is high winds?
200
This happens when air moves from areas of high pressure to areas of low pressure.
What is wind?
200
Low, gray clouds that are dense and are often in sheets.
What are stratus?
200
The tilt of the earth as it rotates around the sun is the cause of this.
What is changing seasons?
200
This is the name for a tornado over a body of water.
What is a waterspout?
300
This is the average annual rainfall Tucson receives.
What is between 11 and 12 inches?
300
Pleasant, sunny, and sometimes warmer weather is associated with this.
What is a high pressure system?
300
Big puffy clouds that look like cotton balls.
What are cumulus?
300
About 78% of Earth's atmosphere is made up of this element.
What is nitrogen?
300
The relationship between temperature and the amount of moisture in the air is called this.
What is (relative) humidity?
400
May 25th is a significant date for Tucson weather because it is this.
What is the average first day Tucson hits 100 degrees?
400
Rainy, windy, and often cooler weather is associated with this kind of system.
What is a low pressure system?
400
This cloud is often very very close to the ground.
What is fog?
400
Lightning and thunder occur at the same time. The reason we generally hear thunder after we see lightning is due to this.
What is the speed of sound vs. the speed of light?
400
This is the term for a scientific prediction of future weather.
What is a forecast?
500
This is the warmest temperature ever recorded at Tucson Airport.
What is 117 degrees?
500
This boundary has warmer and drier air behind it.
What is a dry line?
500
Thunderstorm clouds.
What are cumulonimbus?
500
This is one of the main human-caused factors of global climate change.
What is the emission of greenhouse gases into the atmosphere?
500
Long-term weather information (such as average temperature and rainfall) for a location is called this.
What is climate?