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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 ...
Hipervinculo Tecnología
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. ...
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 ...
Hipervinculo Física
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 ...
Hipervinculo Física
Planets are generally spherical because of gravity. The gravitational force created by a massive celestial body (a planet-sized body) attracts surrounding things towards its center. Gravity is relativ ...
Hipervinculo Física
Lightning is the electronic discharge between particles in the air andclouds and the ground. Electricity is carried through current, or the flow of electrons, and lightning is caused by very large cur ...
Hipervinculo Física
Electricity is carried by current, or the flow of electrons. One useful characteristic of current is that it creates its own magnetic field. This is useful in many types of motors and appliances. Cond ...
Hipervinculo Biología
Bacteria are single-celled organisms. They are very tiny—tiny enough that you cannot see one with the naked eye (although you can see a whole bunch). Bacteria serve all sorts of functions in the envir ...
Hipervinculo Física
Galileo Galilei was a physicist, astronomer, mathematician, creative thinking mastermind who lived in the 16th and 17th centuries in Italy. He was the inventor of the telescope, and one of the first p ...
Hipervinculo Física
Viscosity is a measurement of a fluid’s resistance to change or deformation, or more simply put, how thick it is. A fluid can be a gas or a liquid, and it is easy to see that liquids are thicker than ...
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