What state is the mantle
Solid
What is the core made of
Molten iron and nickel
What state is the outer core
Liquid
What state is the inner core
Solid
True or false, the inner core is more dense than the crust
True
What is the earths crust split up into
Different sections called tectonic plates
How much are the tectonic plates moving every year
A few centimetres
What causes the tech tonic plates to move
Convection currents
What evidence did Alfred wegener have That Africa and South America were once together
The rocks were the same
The fossils were the same
They fit together
How thick is the crust
10-100km
Did people believe wegener and why
No, he couldn’t explain how conte rental drift happened
What did wegener call his theory
Tectonic theory
What are the 2 things that effect co2
When fossil duels are burnt they release a co2
The sea absorbed the co2 in the air
What is a metal ore
A metal ore is a mineral or a mixture of minerals
What do most ores contain
Metal oxides
What is phytomining
Phytomining uses plants to exstract copper from the ground
What is Bioleaching
Bioleaching uses bacteria to exstract copper from solutions
What are the pros of recycling metals
Saves natural resources
Less waste to landfill
Less fossil fuels are burnt
Less mining so less habitats are destroyed
What are the cons of recycling metals
Transport uses fossil fuels so co2 produced
Where on the periodic table are transition metals
In the middle block
What are transition metals uses
They are strong
Relatively unreactive
Good conductors
High melting points
Name one transition metal
Copper
What is an element
An element is made up of one type of Atom
What is a compound
These are 2 or more elements chemically bonded together