Flashcards in Geology Deck (54):
What is an instrument used to observe air pressure?
What is the measure of the amount of energy in air molecules?
What are the scales used to measure temperature
Celsius, Fahrenheit, Kelvin, and Degree
What are lines drawn on a map that show areas of the same temperature?
What is it when something changes from a liquid to a gas?
What is it when something changes from a gas to a solid on a cooler surface?
What is the amount of water vapor present in the air?
What is it when the specific humidity equals the air capacity for holding water vapor?
What are instruments for measuring relative humidity?
What is high fog, mist, or haze?
What type of clouds are thin feathery or tufted, above 7000 meters, and always made of ice crystals
What type of clouds are low sheets or cloud layers found at different altitudes?
What type of clouds are piled in thick fluffy masses that are formed by vertical rising air currents?
What type of clouds are high clouds?
What type of clouds are rain clouds?
What type of clouds are thunderclouds?
How do raindrops form?
1. Water-cloud process
2. Ice process
List the forms of precipitation
Sleet, hail, and snow
What are raindrops that fall through freezing rain that are always small pellets of ice?
What is formed in thunderstorms where they begin as frozen raindrops. The updraft pushes ice back into the clouds and another layer of ice is added until it is heavy and it falls
What is it when water freezes and forms crystals then falls
Why do baseballs fly farther at higher altitudes?
There are less air molecules
What are formed where a high pressure system and a low pressure system meet. Warm humid air mixes with cooler drier air and forms clouds and possibly storms.
What direction does a low pressure system move?
What direction does a high pressure system move?
What kind of weather does a low pressure system produce?
What kind of weather does a high pressure system produce?
What is the rivers of wind high in the atmosphere formed along the upper air boundaries of large masses of warm and cold air?
How does the jet stream change during the summer?
It moves northward into Canada
What happens to the jet stream during a major cold outbreak?
It often dives south
What is a storm with lightning?
What defines a thunderstorm?
What causes a thunderstorm and how does it form?
Lightning heats air around it, which causes the air to expand. The air begins to contrast as it cools
How can you estimate your distance from lightning?
Count the time between seeing lighting and hearing thunder
How fast does sound travel
One mile every five seconds
How far away can you be hit by lightning?
What are the two top locations for being struck by lightning?
1. Wide open space
2. Near a tall tree
What fuels a hurricane?
What is lightning that hits the ground?
Cloud to Ground
What is lightning that is triggered between positive and negative charges in the cloud?
What is lightning that spreads across the sky without hitting the ground?
How is the earth's atmosphere heated?
Radiation, convection, and condensation
How are people struck by lightning?
1. Direct strike
2. Splash from tree
3. Through the ground, going up one leg and out the other
What happens when lightning strikes the body?
1. Rain/sweat turn into steam, clothes are blown off
2. Loss of consciousness
3. Intense muscle contraction
If there is no shelter, what is the best thing to do during a storm?
Crouch on the ground on the balls of your feet
What is winds at different heights, blowing at different speeds and different directions?
What is a super cell?
What is it when tornados are possible?
What is it when tornados are going to happen?
Why is it important to have tornado chasers on the ground during a tornado?
To know if the tornado actually touches the ground/ground truth
What is the scale for a tornado
What is a violently rotating column of air touching the ground from a thunderstorm?
What causes the most damage during tornados?