Why can the rocks in the core not melt despite the core reaching a temperature of 7000 degrees Celcius?
The immense pressure from the overlying layers prevents particles in rocks from moving apart easily, even at high temperatures. Melting point increases.
What is the difference between intrusive and extrusive igneous rock?
Intrusive - magma from mantle pushes up and cools beneath the earth's crust. Extrusive - magma erupts as lava and cools above the surface of the crust.
What is the difference between erosion and weathering?
Erosion - external forces that break rock up and move it away from site. Weathering - internal forces (heat and freezing) within the rock.
Which two metals are found in the earth's core?
Iron and nickel
Limestone is a type of ___________ rock and it used in ____________.
sedimentary; construction
What does biotic mean and give an example.
Anything that is living - plant, animal, insect, microorganism.
Describe 5 interactions occurring in the picture as well at their respective spheres.
5
In which layer of the lithosphere do convection currents occur and is the affect of these currents?
Occurs in the mantle and causes the movement of tectonic plates. This causes plate tectonics which results in formation of mountains. earthquakes, volcanic.
Slate and marble are examples of what type of rock?
Metamorphic
What does abiotic mean and give an example.
Things that are non-living e.g. rocks, air, water.
In which form of rock are fossils most commonly found?
sedimentary
What type of rock forms from the cooling of molten magma?
Igneous