Nearly everyone has had some fun playing with magnets, trying to pick up different magnetic things, feeling the repelling force when pushing poles together, or even prying strong magnets apart. But ho ...
What is a wedge? Wedges are triangle-shaped objects or tools that can be used to make work easier. The small pointed end (which can often be blunt, not sharp) can be used to lift and separate objects. ...
Have you ever seen a bug skate across the surface of water? This is made possible by the cohesion of water molecules on the surface of the water. When we say that water molecules are cohesive, we mean ...
Have you ever wondered why it takes more than just water to get your clothes and dishes clean? Detergent dissolves in water and attaches to things like dirt and whatever is staining your clothes to he ...