C2-Chemical resources Flashcards
What is the outer layer of the earth called
Lithosphere
What is the lithosphere made of
Tectonic plates
tectonic plates are ………… dense than the mantle below
less
How is most of the information about the earth collected
Seismic waves produced by man made explosions and volcanoes
State two properties of the mantle
Cold and rigid
Where is the mantle located
between the core and the crust
Why does the temperature of mantle increase with depth
Because the earth core transfers energy
What makes the plates slowly move
convection currents
Oceanic crust is …………… than continental crust
denser
How are volcanoes formed
magma rises through the earth’s crust because it is less dense than the crust this can cause volcanoes
Different types of …………….rock are formed from lava
igneous
Basalt rock forms from
Runny lava slower eruptions
rhyolite rock forms from
thick lava in explosive eruptions
Limes stone is a ………………. rock
sedimentary
How is limestone formed
soft sediments compressed and cemented together