Some forces are called contact forces because they require objects to touch. One is tension force, found in stretched wires. Another is the force found in a spring. And last are resistive forces: ...
Discover the amazing properties of water's surface tension as you make metal paper clips float on water. You'll learn about the forces that hold water molecules together and how insects like water ...
Step into the hidden science lab in your kitchen with five easy experiments that explain refraction, surface tension, oxidation, capillary action and motion.
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