What Causes Earthquakes?
What Causes Earthquakes? Earthquakes happen when two large pieces of the Earth’s crust suddenly slip. This causes shock waves to shake the surface of the Earth in...
Read MoreWhat Causes Earthquakes? Earthquakes happen when two large pieces of the Earth’s crust suddenly slip. This causes shock waves to shake the surface of the Earth in...
Read MoreWhere Do Volcanoes Begin? Volcanoes begin deep inside the earth. The earth’s crust is made up of giant pieces of rock called plates. Volcanoes are located where...
Read MoreWhy Is the Ocean Salty? The salt in the ocean comes from the earth’s crust. Since the very beginning of the earth’s history, water on its surface has been...
Read MoreAll of the petroleum, or oil, we get from oil wells was formed from the remains of plants that lived and died in the shallow seas that covered much of the earth...
Read MoreHow Are Mountains Formed? Mountains are created by slow movements in the earth’s crust. In some places, heat and pressure deep inside the earth slowly buckle the...
Read More