The compass needle points in the direction of the Earth's magnetic field, or the magnetic field of a magnet. place the plotting compass near the magnet on a piece of paper mark the direction the ...

Christopher Chyba held a hollow, dark cylinder made of manganese, zinc, and iron in his Princeton lab, looking skeptically at ...

Plate tectonics is the theory that Earth's outer layer is made up of plates, which have moved throughout Earth's history. The theory explains the how and why behind mountains, volcanoes ...