Tag Archives: Warm Air

How do gliders fly?

Gliders soar across the sky by riding on air currents. Airplanes without engines are called gliders.  They are very light, with long, slender wings. A glider can glide downhill on air.  It also can soar  upward on rising wind and heat currents in the air. These updrafts are caused by warm air that rises upward …

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Why is it cooler in the mountains?

Probably  you have noticed that it is usually much cooler in the mountains than in nearby lowland places. This is because the higher  up you go, the less air there is above you.  The air becomes colder because it cannot absorb as much heat as it is able to hold at sea level. Perhaps the …

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What are clouds made of?

Pluffy dark clouds and fluffy white clouds—all clouds are made of the same thing.  They are made mostly of tiny droplets of water drifting about on currents of air.  Water to make clouds comes from oceans, lakes and streams. Everywhere water is continually evaporating into the air in the form of an invisible gas called …

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