Structure of earth

• What is the Earth's structure made of?

  Made up of three layers - the crust, the mantle and the core
• What is the Earths Crust?

  • Solid outer part of Earth
• Describe the Earths Mantle.

  • Area of hot molten rock beneath Earth's crust
• Describe the Earths Core?

  • At the centre of Earth, has two parts - the inner core and the outer core
• How thick is the earths Crust?

  10-70 km thick
• Earth's crust can be divided into oceanic crust and continental crust
• Describe the Oceanic crust

  • Ocean floors are mostly made up of, less than 10 km thick, made of heavier rocks rich in magnesium and iron, e.g. basalt
• Describe the Continental crust

  • Usually about 30 km thick, made up of rocks rich in silica such as granite, about 40% of Earth's surface
• Ocean crust is generally much younger than continental crust because it is continually being created by volcanoes that erupt on the ocean floor
• Which fruit represents the Earths structure?

  • Peach Skin represents the crust, stone (pip) at the centre represents the solid inner core, flesh represents the mantle and the outer core
• What is Structure?

  The way in which different parts are put together to make something
• What does Molten mean?

  Heated to a very high temperature so that it becomes liquid
• Name the three layers of the Earth's structure.

  Core mantle and crust
• What is the crust?

  Solid outer part of earth
• What is the mantle? 


  An area of hot molten rock beneath Earth's crust
• What two parts can the Earth's crust be divided into?

  Oceanic crust and continental crust.
• What is oceanic crust made of?

  Heavy rocks rich in magnesium and iron eg basalt
• What are the two areas that the earths crust can be divided into?

  Oceanic crust and continental crust
• Which is younger oceanic/continental? Why

  Oceanic - constantly being created by volcanoes