Best Ever Q&A
Space
Our World
Nature
History
Science & Technology
Human Body
Senses & Organs
Science of Life
Chemicals & Matter
Atoms & Molecules
Materials
Forces & Energy
Sound
Electricity & Magnetism
Everyday Science
Industry
Transportation
Computers
Machines
Ships
Undersea Exploration
Land Travel
Cars
Flight
Structures
Buildings
Farming
Back Home
What are thermals?
Birds can often be seen gliding in tight circles, being carried upward by rising columns of air called thermals. Ground heated by the Sun warms the air above it. The warm air rises, sucking cool air in below it. That, too, is warmed and rises up. Glider pilots use thermals. They circle and climb inside one thermal, then glide to the next.
Related Image
 
Previous:
Back
Book:
Best Ever Q&A
Section:
Science & Technology
Chapter:
Heat & Light