What Makes the Wind?
Wind is the movement of air across the surface of the earth, caused by warm air rising and being replaced by cooler air. Except…
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Temperature
Why Would You Go to Death Valley?
You would go to Death Valley, as do half a million visitors each year, to look at its magnificently varied scenery and to recapture…
Why Does the Sahara Change Shape?
The Sahara, the world’s greatest dry hot desert, stretches right across the north of Africa where there is almost no rainfall and, consequently, little…
What Is a Bunsen Burner?
A Bunsen burner is a gas burner consisting of a tube with a small gas jet at the lower end and adjustable air inlet by means of which the he
When We Light Fire in a Furnace Why Does Smoke Go up the Chimney?
Your chimney–and the flue that lines it–adds architectural interest to your home, but its’ real function is to carry dangerous flue g