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Mr Mac's Weather
Weather Flash Cards
Question | Answer |
---|---|
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 |