Science: Age 18

5 illustrated Science lessons for Age 18.

How the Greenhouse Effect Traps Heat Sunlight passes through the atmosphere and warms the ground, which then gives off heat as infrared radiation. …
Interactive Spinning Magnet, Flowing Current A magnet spinning inside a ring of copper coils pushes electrons back and forth in the wire. Because the magne…
Antibodies Lock Onto a Virus A dendritic cell cuts the pathogen apart and displays antigen fragments on its surface. A B lymphocyte whose r…
Heat Trapped in the Air Carbon dioxide and methane molecules in the atmosphere absorb infrared radiation rising from Earth's surface. …
Car Passing With Sound Waves A car moves to the right along a road, sending out repeating wavefronts. Because the car moves, the wavefronts…