The Earth is made up of different layers: Therefore, instead of tectonic plates moving because of the convection currents, evidence suggests it is the plates that drive the convection. Slab pull ...

6. Show students how to cut their eggs. 7. Ask students to name the different layers of the Earth's interior using the egg as a model that represents the Earth. Caution: The egg analogy has some ...

Geologists have calculated the age of Earth at 4.6 billion years ... Even the Greeks and Romans realized that layers of sediment in rock signified old age. But it wasn't until the late 1700s ...

The Earth has a layered structure made up of the core, the mantle and the crust. Different elements are present in different parts of the Earth’s structure. The crust is made from enormous ...

About 10% of the ozone in the atmosphere is found in the troposphere, the layer we live in; the rest is found in the stratosphere, about 10–50 kilometers (6–30 miles) above the Earth’s surface. Good ...