540054
C2 A+B
- A (STRUCTURE OF EARTH)
- OUTER LAYER OF EARTH= LITHOSPHERE
- cold,rigid,comprimises crust and top part of mantle
- cold,rigid,comprimises crust and top part of mantle
- Tectonic plates
- Less dense than mantle
- Move due to convection currents
- Less dense than mantle
- OUTER LAYER OF EARTH= LITHOSPHERE
- Crust to
thick to drill
- Information of earth collected by seismic waves
- OR man made expolsions
- Information of earth collected by seismic waves
- Wegener's theory
- Africa + south america one land mass
- accepted because wide range of evidence +
discusses and tested by many scientists
- 1960's new sea floor spreading evidence
- Africa + south america one land mass
- Subduction
- Oceanic crust denser than continental crust, they colliide
- Oceanic plate sinks,pulling plate down and melting it as it
reaches hotter part of mantle
- Oceanic plate sinks,pulling plate down and melting it as it
reaches hotter part of mantle
- Oceanic crust denser than continental crust, they colliide
- CONSTRUCTION MATERIALS B
- RAW MATERILS
- EXAMPLES 1,CLAY-BRICK. 2.LIMESTONE+CLAY-CEMENT
- HARDNESS MEASURED BY
RUBBING 2 MATERILS TOGETHER
- FROM EARTHS CRUST
- EXAMPLES 1,CLAY-BRICK. 2.LIMESTONE+CLAY-CEMENT
- 3 TYPES OF ROCK
- SEDIMENTARY
- Limestone-made from soft sediments
compressed/cemented 2gether
- Makes limestone
soft
- Makes limestone
soft
- Limestone-made from soft sediments
compressed/cemented 2gether
- METAMORPHIC
- Limestone changed by heat/pressure
- Composed of an interlocking mosaic
of carbonate crystals
- Limestone changed by heat/pressure
- IGNEOUS
- Granite formed when magma cools/solidifies
- Granite is a igneous rock with interlocking crystals,
makes it very hard
- Granite formed when magma cools/solidifies
- SEDIMENTARY
- RAW MATERILS
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