The Sun And Our Atmosphere Flashcards
Heat comes from…
Our sun.
Heat is a major factor in…
Our weather.
How is air temperature measured?
Using a thermometer.
How does a thermometer work?
The liquids in the thermometer expand when they are heated and shrink when they are cooled.
The Earth is heated by what?
The sun’s rays.
The air above the Earth is warmed by what?
Earth’s surface.
When warm air rises what happens?
Low pressure is applied.
When cooler air sinks what happens?
High pressure is applied.
What is wind?
The horizontal movement of air from an area of high pressure to an area of low pressure.
What are winds caused by?
Differences in air pressure.
Where do global winds blow?
From a specific direction over a long distances
Where do warm and cold air rise and sink?
Warm air: rises at the equator
Cold Air: sinks at the poles.
What is the convection current?
When air blows from the equator to the poles and from the poles to the equator.