composition of the earth

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composition of the earth by Mind Map: composition of the earth

1. minerals and mineral rescources

1.1. properties

1.1.1. colour

1.1.1.1. is used to identifi what mineral it is. but not very usefull

1.1.2. streak

1.1.2.1. is the mineral in powdered form

1.1.3. hardness

1.1.3.1. resitence to scratching

1.1.4. clevage

1.1.4.1. different minerals break in different lines.

1.1.5. crystaline strucure

1.1.5.1. how the atoms are formed

1.1.6. amount of transpiracy

1.1.6.1. the ability to let light pass through it

1.1.7. tenacity

1.1.7.1. how the particals of the mineral hold togehter

1.1.8. magnetism

1.1.8.1. the ability to attract or repell other mangenitic substances

1.1.9. luster

1.1.9.1. how much light is reflected

1.1.10. specific gravity

1.1.10.1. if the mineral will sink or float in water

2. Earths structure

2.1. inner core

2.1.1. made of iron and maybe silcon , and carbon

2.1.2. inner core is a solid ball

2.1.2.1. can rech up to 5000 c to 5700 c

2.2. outer core

2.2.1. made of nickle and liquid iron

2.2.2. might have sulphur or oxygen present

2.2.3. is 4000 c

2.3. mantle

2.3.1. lower

2.3.1.1. plastic and taffy like

2.3.1.2. 2500 c

2.3.2. upper

2.3.2.1. solid rock

2.3.2.2. 1000 c

2.3.3. mantle

2.3.3.1. seperates mantle from the crust

2.4. crust

2.4.1. solid rock

2.4.2. the outer layer of the layers of the earth

3. Rock formations

3.1. sedimentary

3.1.1. mostly made in water

3.1.2. pieces of random rocks are pressed together

3.1.2.1. forms the rock

3.1.3. ways of coming one

3.1.3.1. as more layers come on top the lower layers are pressed togehter

3.1.3.1.1. pressure

3.1.3.2. glued together by dissolving minerals

3.1.3.2.1. cementing

3.2. metamorphic

3.2.1. forms about 16 km beneath the earths surface

3.2.1.1. squzzes and heats up to 800 c over a long time

3.2.1.1.1. becomes one rock

3.3. igneous

3.3.1. starts as magma

3.3.1.1. intrusive

3.3.1.1.1. cools beneath the earths surface

3.3.2. starts as lava

3.3.2.1. extrusive

3.3.2.1.1. forms above the surface