Saturday 6th September
TODAY WE ARE
LEARNING ABOUT
 Where do rocks come from?
TODAY'S
KEY WORDS ARE
  • R_ck
  • _g_
  • M_t__r_t_s
  • _gn___s
  • Fr__z_
  • M_lt_n
  • L_tt_c_
  • Cryst_ls
    		•

    Memory Anchor:

    YOU WILL SHOW
    YOUR LEARNING BY...

    • Super Challenge:

      Stretch:

      Challenge:

    Key Questions:

    1. Are all rocks the same age?
      • There are lots of different rocks of all sorts of ages.
    2. Where are the oldest rocks found?
      • The oldest rocks are found in Africa, Canada and Australia.
    3. Where are the youngest rocks on the earth generally found?
      • The youngest rocks are found around volcanoes.
    4. Why has the amount of rock material on the earth remained fairly constant since its formation?
      • No new material gained or lost from the planet (with the exception of the small number of meteorites that have collided with the planet)
    5. What materials are new rocks made from?
      • Those recycled by the earth over its existence.
    6. What type of rocks are formed when molten rock freezes?
      • Igneous rocks
    7. Describe the structure of particles in an igneous rock
      • Particles in an igneous rock are fixed in a lattice, the reason why the rocks hold their shape.
    8. Solids are made up of crystals. What are crystals?
      • Crystals are regions of a single lattice orientation.
    9. How does the rate at which something freezes affect the size of the crystals it contains?
      • The slower the rate of freezing, the greater the size of the crystals that are formed within that structure.
    10. Why are the crystals formed larger when an object freezes more slowly?
      • The crystals are large because the Particles have more time to line up before freezing.
    11. Why are the crystals formed smaller when an object freezes quickly?
      • The crystals are small because the Particles have less time to line up before freezing.
    12. What size crystals are formed when solids freeze slowly?
      • When solids freeze slowly the crystals are large.
    13. What is the impact on the structure of an igneous rock when it forms slowly under the ground?
      • Due to it cooling slowly, it will contain large crystals.
    14. What is the impact on the structure of an igneous rock when it forms above the ground or in water, resulting in tit cooling rapidly?
      • Due to it cooling quickly, it will contain small crystals.
    15. Does the size of crystals affect the properties of a rock?
      • The size of crystals affects some of the properties of the rock.