7th Grade Sciene Review

Guys, by now you should have studied pretty much everything except for these three questions:

1) How is dew created?
Dew is formed as air gets saturated quickly because its temperature goes down. As warm air gets colder at night, or early in the morning, the water vapor in it will go from being a gas to a liquid, sticking itself to the closest object available.

2) How does the sun create wind?
The sun creates wind because it heats up air molecules, which makes them move around faster. As this happens, they clash with cold air molecules, creating wind.

3)Explain why the polar regions reflect sun light/heat more than a jungle.
Simply put, because of their color. Polar regions are covered in white snow, whereas other parts of the world, like for example a jungle, are darker colored. Dark colors absorb light and heat, whereas lighter colors reflect it. Because of this, anytime sunlight hits snow, it's reflected, but when it hits a jungle, it's absorbed.