Clouds
A cloud at ground level.
What is fog?
The most common type of storm formed in cumulonimbus clouds. It causes heavy rain, thunder, and lightning.
What is a Thunderstorm?
An instrument used to measure temperature. Temperature is measured in Celsius and Fahrenheit.
What is a Thermometer?
This pressure system usually brings warm, moist air, clouds, and rain.
What is a Low Pressure System?
A boundary caused when two air masses with different temperatures meet.
What is a Front?
These clouds are formed in the highest level of the troposphere. They have a feathery, or swirling type shape. They are made up of ice crystals. They indicate sunny or fair weather.
What are Cirrus Clouds?
The huge electrical sparks that you see during a thunderstorm.
What is lightning?
An instrument used to measure humidity.
What is a Hygrometer?
This air pressure system usually brings clear skies and cooler weather.
What is a High Pressure System?
A type of front where cold air moves under a warm air mass. It often causes brief, heavy thunderstorms, with heavy winds. The weather turns clear and cooler after it passes.
What is a Cold Front?
A lower cloud that forms in a blanket-like cover. This type of cloud is usually found on overcast days in which there is usually very little sunshine.
What are Stratus Clouds?
Part of the atmosphere where air moves in a circular pattern because of unequal heating and cooling. When one of these becomes too strong a tornado forms.
What is a Convection Cell?
An instrument used to measure air pressure.
What is a Barometer?
A wind that blows from the land towards the water. This type of wind occurs at night when the cooler air above the land replaces the rising, warm air above the ocean.
What is a Land breeze?
A type of front that happens when a warm air mass and a cold air mass meet and does not move. Can bring many days of clouds and precipitation.
What is a Stationary Front?
A big, white, fluffy cloud that appears to rise up from the bottom. This type of cloud usually indicates partly cloudy and sunny weather.
What are Cumulus Clouds?
A violent whirling wind that moves across the ground in a narrow path destroying anything in its way. These are most common in the Midwest and the South in the U.S.
What is a Tornado?
Used to measure the magnitude of earthquakes.
What is the Richter Scale?
A line on the weather map connecting places with equal air pressure.
What is an Isobar?
A type of front that happens when a warm air mass is caught between two cold air masses and is pushed upwards. Can bring strong winds and heavy precipitation.
What is an Occluded Front?
A dark, puffy cloud that results in thunderstorms and heavy rain, or snowflakes.
What is a Cumulonimbus Cloud?
A very destructive storm with high winds and heavy rain. They are ranked by their wind speed and are most common in the coastal regions of the U.S. Formed over warm ocean water near the equator and move towards land. They are characterized by very low air pressure.
What are Hurricanes?
An instrument used to measure wind speed.
What is an Anemometer?
The curving of the path of a moving object caused by the Earth's rotation. This is the reason most storms in the U.S. move from west to east.
What is the Coriolis Effect?
A type of front where warm air moves over a cold air mass. It often causes light, steady rain, or snow that could last for days. The weather is warm and milder after it passes.
What is a Warm Front?