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Mr Mac's Weather

Weather Flash Cards

When speaking about science, what are variables? Things scientist try to control, change and manipulate in an experiment because they can change the results.
What is weather? The daily condition of the atmosphere at any place and time.
What is the driving engine behind weather? The sun.
What is climate? An area's weather over a long period of time.
Why do areas on Earth have different seasons? The 23.5 degree tilt of Earth makes the sun's rays hit areas at angles where energy is not absorbed as effectively.
When the southern hemisphere is tilted away from the sun, the season there is... winter
When the North Pole is tilted toward the sun, the season for the the northern hemisphere is... Summer
Which gas is most abundant in our atmosphere? Nitrogen
Which gas is about 21 percent of Earth's atmosphere? Oxygen
Using ice core samples, scientist have found what connection between temperature and carbon dioxide in the atmosphere? The more carbon dioxide in the atmosphere the higher the temperature.
You are standing in what layer of the atmosphere? Troposphere
Most all clouds can be found in what layer of the atmosphere? Troposphere
Air moves from ___________ pressure to ___________ pressure. high to low
Wind is what? moving air
On a hot sunny afternoon at the beach, air typically moves from the _____________ to the _____________. ocean to the land -This is a sea breeze.
True or False: Hot air is less dense than cold air. true
True or False: Hot air has less pressure than cold air. true
How are green house gasses different from the other gasses in our atmosphere? Green house gasses hold heat against Earth better than other gasses.
At night on the beach when the land has cooled, air moves from the ____________ to the ______________. land to the ocean -This is a land breeze.
True or False When warm air rises, cool air moves to fill in the space. true
True or False: Earth's axis tilts at 28 degrees. FALSE! About 23.5 degrees
If Earth did not tilt 23.5 degrees on it's axis, we would not have... seasons ...the daily temperature in an area would always be about the same.
True or False: A container without a liquid or solid in it is empty. False -It is absolutely full of gasses (air) ...And to get any thing else in it, some of those gasses must be pushed out.
What is caused by a convection current of atmospheric gases? Wind
True or False: Air is a fluid. True
True or False: Gases are not matter. False
True or False: Gases are matter, but do not have mass or weight. False
In global wind systems, air does not move directly from high to low pressure because of... The Coriolis Effect (Earth's rotational effect on the atmosphere)
True or False: A sea breeze or a land breeze at the beach are examples of local wind currents. True
True or False: Global wind currents and local wind currents are both convection currents. True
Uneven heating of Earth's surfaces creates... Wind -specifically convection currents
True or False: The troposphere gets warmer as you move away from Earth's surface. False
True or False: Air pressure is greatest in the stratosphere. False -troposphere
The amount of air pressure pushing on your textbook would be hundreds or maybe even thousands of pounds. True
What do we call the weight of the gasses in the atmosphere pushing on everything? Air pressure
What is the device used to measure air pressure? Barometer
Can changes in air pressure help forecast weather? Yes -low pressure means rain and storms and high pressure means clear skies and calm weather.
When air moves long distances it curves. Why? The Coriolis Effect
What are clouds made of? Tiny, tiny, very small drops of liquid water
Are there different types of clouds? Yes. Stratus, Cirrus, Cumulus, Cumulonimbus and many others.
At what point does the water vapor in air condense back to liquid water? The dew point.
What is the term that means how much water vapor is in the air? Humidity
What is water vapor? Water as a gas.
What is ice? Water as a solid.
What device measures wind speed? Anemometer
When we are having spring and fall the Sun is shinning most directly at what part of the Earth? Equator
When we are having summer the Sun is shinning most directly at what imaginary line on Earth? The tropic of Cancer
A fluffy, puffy cloud on clear day would most likely be a ____________ cloud. cumulus
A wispy cloud that resembles curls of hair, often located at high altitudes, would most likely be a ____________ cloud. cirrus
A cloud that resembles a quilt laid over the entire sky and often means rain is coming, would most likely be a _____________ cloud. stratus
A thick, tall, puffy cloud that forms when thunder storms are coming and is referred to as a thunderhead is a ____________ cloud. cumulonimbus
How does a barometer work? The mercury inside moves based on how much pressure from air it gets. (mercury) OR The air tight chamber gets bigger or smaller because of the pressure of air. (aneroid)
The force of air pressing on your body is well over hundreds of pounds. True or False True! Air pressure is pushing at 14.7 lbs per square inch. Your body's surface is way bigger than that!
If I was on a mountain and you were at the beach and the weather was the same for both of us, who would most likely have the lower barometric reading? Me -on the mountain -higher you go less air pressure
Cold air has what kind of pressure? (compared to warm air at the same altitude) High
Warm air has what kind of pressure? (compared to cold air at the same altitude) Low
What is the most influential factor controlling climate? Latitude
What factors control the climate of an area? Latitude, altitude, distance to large bodies of water, ocean currents, global wind currents, mountains, amount of green house gases, as well as other man-made and natural land features
Hurricanes and tornadoes are what kind of storms? Cyclones
Hurricanes use warm water for energy and die out over land. True or False True
Created by: MrMac
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