topic test

• Earth is divided into…

  1. atmosphere(air)
  2. hydrosphere(water)
  3. lithosphere(earths crust)
• what is Earths Crust

  new crust can be added as molten magma moves up to the crust, from the magma, and cools
• Mantle


  hot, semi molten layer of the earth
• rocks


  collection of different types of minerals
• materials


  solids made up of atoms of elements naturally occurring compound
• Lithosphere


  made up of rocks
• defined minerals


  naturally occurring compounds
• different types of atoms = compounds (eg si O2)
• one type of atoms = native elements (eg gold)
• atoms in minerals are arranged as a crystal lattice
• this determines the shape of the mineral