You’ll feel the pressure to do some heavy lifting. When you push the plunger on a syringe, water is forced into a second syringe, extending its plunger and lifting a mechanical arm. The process ...
Photosynthetic organisms capture energy from the sun and matter from the air to make the food we eat, while also producing the oxygen we breathe. In this Snack, oxygen produced during photosynthesis ...
Measure the efficiency of solar cells as they convert sunlight to power. Solar cells convert light energy into electrical energy. With a few simple tools on a sunny day (or working indoors under a ...
How do you put a straight rod through a curved slot? If you see a straight rod and a curved slot, common sense says the rod can’t possibly fit through the slot. But if the rod is angled and rotated ...
The energy released in an earthquake ranges over many orders of magnitude. Earthquakes are measured on a magnitude scale that is exponential: Each additional unit multiplies the energy released by 32.
Microbial decomposers heat things up. No yard? No problem. Make a mini indoor compost pile, and look for evidence of microbial metabolism. Put equal amounts of compost and coffee grounds in the cooler ...