P1 - The Earth in the Universe

HideShow resource information
View mindmap
  • P1 - The Earth in the Universe
    • Solar System
      • Stars
        • Give out lots of light
      • Planets
        • Reflect sunlight falling on them
      • Formed from big clouds of dust & gas
        • Sun
          • Cloud got squeezed tightly
            • Gravity took over
              • Clouds collapsed in on themselves
                • Formed a protostar
                  • Fusion started
        • Planets
          • Hydrogen, helium & heavy elements clumped together
      • Sun
        • Cloud got squeezed tightly
          • Gravity took over
            • Clouds collapsed in on themselves
              • Formed a protostar
                • Fusion started
      • Stars' energy comes from fusion of hydrogen nuclei
      • Planets
        • Hydrogen, helium & heavy elements clumped together
      • Asteroids
        • Smallish lumps of rubble & rock
      • Comets
        • Balls of rock, dust & ice
      • Lightyear
        • Distance of light traveling through a vacuum (space)
          • Light travels at 300,000km/s
    • Looking into space
      • Parallax
        • Something appears to move when looking at it from a different angle
          • Stars further away appear to move less
      • Earth's atmosphere absorbs lots of light from space before it reaches us
      • Light pollution makes it hard to see dim objects
        • Light pollution = light thrown upwards (eg. street lamps)
    • Life of the universe
      • Redshift
        • Galaxies move away from us
          • Wavelength of light from it changes
            • Light becomes redder
        • The greater the redshift the faster it's moving away
          • The more distant the galaxy, the faster it moves away from us
            • Proves the universe is expanding
          • Proves the universe is expanding
      • Big Bang Theory
        • Matter & energy compressed
          • Exploded & expanded
    • The changing Earth
      • Rocks
        • When lava from volcanoes sets, it forms new rocks
        • 'Rock Cycle'
          • Particles erode from existing rocks
            • Washed into sea & settle as sediment
              • Sediments get crushed to form sedimentaryrocks
                • Pushed to the surface
                • Descend into heat & pressure inside the Earth
                  • Heated & crushed
                    • Can be melted
    • Continental Drift
      • Millions of years ago there was 1 'supercontinent'
        • Broke into small chunks - our continents
          • Slowly drifting apart
      • Sea Floor Spreading
        • Magma rises up through sea floor, solidifies & forms underwater mountains
          • Liquid magma erupts out of the gap
            • Iron particles in the rock align with the Earth's magnetic field
              • As it cools they set in position
    • Earth's Structure
      • Continental crust -> oceanic crust -> mantle -> core
        • Crust & upper mantle are cracked into tectonic plates
          • Convection currents in mantle cause d by heating in core & matle
            • Cause tectonic plates to drift
              • If the plates move suddenly there is an earthquake
              • Volcanoes are formed where plates meet
              • Mountains are formed when plates crash
      • Crust & upper mantle are cracked into tectonic plates
        • Convection currents in mantle cause d by heating in core & matle
          • Cause tectonic plates to drift
            • If the plates move suddenly there is an earthquake
            • Volcanoes are formed where plates meet
            • Mountains are formed when plates crash
    • Waves
      • Seismic Waves
        • P-Waves
          • Travel through solids & liquids
          • Faster than A-Waves
        • S-Waves
          • Travel through solids
          • Slower than P-Waves
      • Amplitude = distance from rest position to peak/trough
      • Wavelength = length of a full cycle (eg. crest to crest)
        • Wavespeed = Freq. x Wavelength
      • Frequency = no. complete waves passing a point per second (Hz)
      • Transverse
        • Vibrations at 90 degrees to direction of travel
        • Longitudinal
          • Vibrations in same direction as wave is traveling
      • Longitudinal
        • Vibrations in same direction as wave is traveling

Comments

Pokemon/Trainer

Report

This is incredible, keep it up

Similar Physics resources:

See all Physics resources »See all Earth in space resources »