C2-Chemical resources

Question 1

What is the outer layer of the earth called

Answer 1

Lithosphere

Question 2

What is the lithosphere made of

Answer 2

Tectonic plates

Question 3

tectonic plates are ………… dense than the mantle below

Answer 3

less

Question 4

How is most of the information about the earth collected

Answer 4

Seismic waves produced by man made explosions and volcanoes

Question 5

State two properties of the mantle

Answer 5

Cold and rigid

Question 6

Where is the mantle located

Answer 6

between the core and the crust

Question 7

Why does the temperature of mantle increase with depth

Answer 7

Because the earth core transfers energy

Question 8

What makes the plates slowly move

Answer 8

convection currents

Question 9

Oceanic crust is …………… than continental crust

Answer 9

denser

Question 10

How are volcanoes formed

Answer 10

magma rises through the earth’s crust because it is less dense than the crust this can cause volcanoes

Question 11

Different types of …………….rock are formed from lava

Answer 11

igneous

Question 12

Basalt rock forms from

Answer 12

Runny lava slower eruptions

Question 13

rhyolite rock forms from

Answer 13

thick lava in explosive eruptions

Question 14

Limes stone is a ………………. rock

Answer 14

sedimentary

Question 15

How is limestone formed

Answer 15

soft sediments compressed and cemented together

Question 16

Marble is an example of a

Answer 16

metamorphic rock

Question 17

Marble is formed when limestone is

Answer 17

changed by heat and pressure and is typically composed of an interlocking mosaic of carbonate crystals

Question 18

How is granite formed and what type of rock is it

Answer 18

when magma cools and solidifies It is a igneous rock so it is very hard

Question 19

What is thermal decompostion

Answer 19

A reaction where one substance breaks down on heating to give at least two new substances