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AIR
Variables
Atmosphere
Weather
Water
100
List 2 things that you know to be true about air.
-Air can be compressed -Air takes up space -Air is a mixture of mostly oxygen and nitrogen.
100
What are most important variables used to describe weather? Must include 2!
-Water in the air -Air Movement -Temp.
100
What is the layer of atmosphere where most of the weather takes place?
Troposphere
100
What was the name of this unit?
Weather on Earth
100
If a person is trying to heat up water quickly. Which of these options will work the best? -Cover the pool with a plastic cover -Put a sheet of dark blue plastic on the bottom and cover the pool with a clear sheet. -Put a sheet of yellow plastic on the bottom. -Put a sheet of black plastic on the bottom and leave the pool uncovered
Put a sheet of dark blue plastic on the bottom and cover the pool with a clear sheet.
200
Convection currents create
Wind
200
What is a variable?
Answer: A variable is an object, event, idea, feeling, time period, or any other type of category you are trying to measure. There are two types of variables-independent and dependent.
200
What is the Stratosphere?
Above the troposphere lies the stratosphere where jet airplanes fly. Temperatures increase with altitude because of increasing amounts of ozone. The ozone layer within the stratosphere absorbs harmful ultraviolet rays of sunlight.
200
Energy transferred in rays or waves from the Sun to Earth is called
Radiation
200
The circulation fluid that results from energy transfer causing warm masss to rise and cool masses to sink is called.
Convection
300
What is an example of a solar cooker?
An oven
300
What is an independent variable?
An independent variable is exactly what it sounds like. It is a variable that stands alone and isn't changed by the other variables you are trying to measure. For example, someone's age might be an independent variable. Other factors (such as what they eat, how much they go to school, how much television they watch) aren't going to change a person's age. In fact, when you are looking for some kind of relationship between variables you are trying to see if the independent variable causes some kind of change in the other variables, or dependent variables.
300
What is the Mesosphere
As the mesosphere extends upward above the stratosphere, temperatures decrease. The coldest parts of our atmosphere are located in this layer and can reach –90°C.
300
How much of of the earths surface is covered by water?
70%
300
Why do materials such as water and soil heat at different rates, even if they recieve the same amount of solar eneregy?
They have different energy absorbing properties
400
what is a baromoter?
an instrument measuring atmospheric pressure, used especially in forecasting the weather and determining altitude.
400
What is a dependent variable?
It is something that depends on other factors. For example, a test score could be a dependent variable because it could change depending on several factors such as how much you studied, how much sleep you got the night before you took the test, or even how hungry you were when you took it. Usually when you are looking for a relationship between two things you are trying to find out what makes the dependent variable change the way it does.
400
What is the Exosphere?
The upper layer of our atmosphere, where atoms and molecules escape into space, is called the exosphere.
400
What is convection?
What is Convection? "Convection is the transfer of heat energy by the movement of matter." There are a few points in that short statement that aren't quite right but it is adequate for most situations. For thermal convection to occur we have to have the following: • Some matter that can flow, literally a fluid. This is usually a gas or a liquid but in extreme cases even rock will flow, this happens in the Earth's mantle and leads to the plate tectonics that have shaped our world. • The fluid must change its density as its temperature changes. It is usually assumed that materials will expand when it heated but this is not always the case, the density of water is highest at around 4°C as a result if you put ice cubes in a drink on a hot day the bottom of the drink won't drop below 4°C unless you stir it; the cooled drink stays at the top of the glass along with the ice cubes! • The fluid must be able to flow. This isn't always the case as fluids can be trapped by porous materials such as sponges or the fluid may be too viscous; convection isn't usually very effective in cold treacle or bitumen! • There must be a gravitational difference so that the less dense material will rise due to buoyancy. This breaks down in some situations; an extreme case would be a flame inside a spacecraft sitting on an asteroid, the force of gravity would be so weak that convection would be very weak, assuming that it worked at all. This situation can be reproduced on or close to the Earth by making use of the microgravity produced in freefall. Again a flame will behave very oddly under these conditions.
400
What is the water on the outside of a glass called when it is left out for a while?
Water vapor
500
What is a wind vane?
A wind vane is a device that measures the direction of the wind. The wind vane is usually combined with the anemometer. Wind direction is the direction from which the wind is blowing.
500
How many variables can you change in an experiement?
1
500
What is the Thermosphere
In the forth layer from Earth’s surface, the thermosphere, the air is thin, meaning that there are far fewer air molecules. The thermosphere is very sensitive to solar activity and can heat up to 1,500°C or higher when the Sun is active making an aurora that lights up the night sky. Astronauts orbiting Earth in the space station or space shuttle spend their time in this layer.
500
Describe the water cycle.
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