General Science

• The crust is the thickest in mountainous regions and thinnest in the oceanic crust
• Pressure and temperature increased with depth inside the earth.
• The Earths shape is an oblate spheriod and areas closer to the poles are closer to the center
• The core has two layers, inner and outer
• Plate tectonics is the theory that explains how continents move around on the surface of the Earth
• a sinking of land along a fault line suggests that the movement of land is convergent.
• Moh's Scale of Hardness

  1. Talc

  2. Gypsum

  3. Calcite

  4. Flourite

  5. Apatite

  6. Orthoclase

  7. Quartz

  8. Topaz

  9. Corundum

  10. Diamond
• Layers of the Atmosphere

  Troposphere, Stratosphere, Mesosphere, Thermosphere, Exosphere
• SI units are the international system of units for measuring physical quantities, based on seven base units and derived units
• Example of SI units

  • Second (s) for time
  • Metre (m) for length or distance
  • Kilogram (kg) for mass
  • Ampere (A) for electric current
  • Kelvin (K) for thermodynamic temperature
  • Mole (mol) for amount of substance
  • Candela (cd) for luminous intensity
  • Derived units such as joule (J) for heat, tesla (T) for magnetic field, and kilogram meter per second (kg⋅ m/s) for momentum.