Bill Nye demonstrated it pretty well on his tv show. Very easy for kids (including me when I first saw this) to comprehend. https://m.youtube.com/watch?v=97Ob0x

Bill Nye demonstrated it pretty well on his tv show. Very easy for kids (including me when I first saw this) to comprehend. https://m.youtube.com/watch?v=97Ob0xR0Ut8 https://m.youtube.com/watch?v=97Ob0xR0Ut8