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forces that shape the earth

Many forces can form, or shape, the Earth. Some of these forces come from deep within the ground. Volcanos and earthquakes cause major changes to the landscape. Other changes occur because of natural forces on the surface. Water and wind shape the planet every day. Human activity also plays a role in ... read more

matter

Matter is anything that takes up space and has mass. Atoms or parts of atoms form all matter. It is everything from the tiniest electron to the planets and stars. ... read more

people who study physics

Physics is about how things work. People who study physics are called physicists. They learn about light and sound. They learn about electricity and magnetism. They learn about force and energy. They learn about how everything works, from the tiniest atom to the vastness of space. Physicists study man... read more

panning for gold

How the 49ers found fortune in the famous Californian gold rush. ... read more

electricity and magnetism

Electricity and magnetism are everywhere. Electricity is a form of energy. Magnetism is also a form of energy. They make it possible for televisions, computers, and many other electronic devices to exist. Medicine uses them to help treat illnesses in humans and animals. ... read more