A compound is a substance that contains two or more elements close elementA pure substance that is made from only one type ... rock that has cooled and solidified. The inside of the Earth is ...

7. Describe that the same behavior happens for many types of rocks. Tell the students that temperature and pressure increase as one goes deeper in the Earth, so that the deeper Earth material ...

The plates make up Earth's outer shell, called the lithosphere. (This includes the crust and uppermost part of the mantle.) Churning currents in the molten rocks below propel them along like a ...

Gneiss is a type of metamorphic rock that has been subjected to high temperatures and pressures deep in Earth's crust ...

Third, magnetism in rocks can be used to estimate the age of a fossil site. This method uses the orientation of the Earth's magnetic field, which has changed through time, to determine ages for ...

Weathering and erosion slowly chisel, polish, and buff Earth's rock into ... that dissolves rock. For example, acid rain dissolves limestone to form karst, a type of terrain filled with fissures ...

All that said, the findings can’t confirm the terrestrial life theory beyond a doubt. There’s still a chance hydrogen-heavy ...

These findings are important because active volcanoes on Earth often create conditions that support life—by releasing heat ...