Science: Age 14

7 illustrated Science lessons for Age 14.

How an Alternator Makes Electricity When you turn the shaft, a magnet spins next to fixed copper coils, and its moving magnetic field pushes elect…
The Rock Cycle Loop Rocks are never finished: they slowly turn into new kinds of rock through melting, cooling, erosion, burial, h…
Chromosomes in the nucleus Your genetic information is stored in the nucleus of each cell, packed into chromosomes made of DNA. A human b…
Photosynthesis Plants use sunlight to turn carbon dioxide and water into sugar. Oxygen is released into the air during this p…
Immune Defense in the Blood White blood cells patrol the blood and can wrap around invaders to take them inside. Antibodies are Y-shaped p…
Turbine Turns an Alternator Water rushing downhill spins a turbine wheel. A shaft carries that spinning motion to an alternator, which mak…
Paired Chromosomes in a Cell Inside the nucleus, chromosomes come in matching pairs. One chromosome in each pair comes from the mother, and…