The inner core is made from solid iron and nickel. It is a solid because of the pressure of the other layers of the Earth pressing on it.
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What is the outer core of the Earth made from?
The outer core is made from liquid iron and nickel. It is constantly spinning and this generates the Earth's magnetic field.
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What name is given to the crust and the solid outer part of the mantle?
The lithosphere is the name given to the crust and the solid outer mantle. Lithos means rock in Greek.
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Who proposed the theory of continental drift?
Wegener proposed the theory of continental drift: that the continents had moved and were continually moving across the surface of the Earth
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What makes these sections of crust move?
Convection currents in the mantle drag the plates around on the surface of the Earth
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What type of rock is formed from molten rock?
Igneous rocks are formed from molten rock (magma or lava) that has cooled and solidified.
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Which kind of rock may contain fossils?
Sedimentary rocks may contain fossils because the remains of living things can become trapped in the sediment before it turns to rock. Metamorphic rock cannot contain fossils because of the way it is formed
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How are metamorphic rocks formed?
Metamorphic rocks form from igneous and sedimentary rocks that have been exposed to heat and pressure. Sediment forms sedimentary rock
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What is the main chemical compound in limestone?
Calcium carbonate is the main chemical compound in limestone. Silicon oxide is the main mineral in sand.
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Other cards in this set
Card 2
Front
What is the outer core of the Earth made from?
Back
The outer core is made from liquid iron and nickel. It is constantly spinning and this generates the Earth's magnetic field.
Card 3
Front
What name is given to the crust and the solid outer part of the mantle?
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