Rocks

Question 1

What are the features of sedimentary?

Answer 1

Grainy, porous, layers , fossils

Question 2

What are the features of igneous rocks?

Answer 2

Crystals, hard, non-porous

Question 3

What are the features for metamorphic rocks?

Answer 3

Hard, fossils, crystals, thin layers and non-porous

Question 4

What does porous mean?

Answer 4

Has tiny air pockets that water can travel through, it is not waterproof

Question 5

What are grains?

Answer 5

They are particles that make up the rock. They can be round, smooth or interlocking

Question 6

What are crystals?

Answer 6

They are solid material where atoms are arranged in an organised way and a regular pattern

Question 7

How are igneous rocks formed?

Answer 7

Magma gets heated and eventually gets through the crust however when reaches the sea it solidifys again as it cools down. Creating a rock

Question 8

Name some types of sedimentary rocks?

Answer 8

Conglomerate, limestone, sandstone, schist, breccia, obsidian, chalk, slate

Question 9

Name some types of igneous rocks?

Answer 9

Granite, pumice, basalt

Question 10

How are sedimentary rocks formed?

Answer 10

Sedimentary is formed usually under the sea. Sediment is transported down by rivers and gets deposited it then starts compaction to creat layers. And finally cement action occurs when all the grains are stuck together

Question 11

What does deposition mean?

Answer 11

Sediment get deposited to form layers

Question 12

What does compaction mean?

Answer 12

When sediment is squashed and water is squeezed out

Question 13

What does cementation mean?

Answer 13

When sediment grains are stuck together

Question 14

What is a fossil?

Answer 14

A fossil is the preserved remains of the actual body part of an animal or plant

Question 15

How is a fossil formed?

Answer 15

An animal or plant dies near the sea.
The flesh decays away leaving only bone.
Layers of sediment above are compressed and turn into rock.
Minerals leach through soil and rock into the bone to form a fossil.
The rock is eroded away through weathering and erosion until the fossil is exposed.

Question 16

How are metamorphic rocks formed?

Answer 16

Metamorphic rocks are formed by melting (heat)usually by magma. Also high pressure from layers above.

Question 17

What do you need to form metamorphic rocks?

Answer 17

. High temperature

. High pressure

Question 18

What does meta mean in the word metamorphic ?

Answer 18

Meta means …..

Change

Question 19

If a volcano erupts what rock would it be six months later?

Answer 19

Igneous with small crystals as it would cool quicker with less time to expand

Question 20

If a volcano erupts what rock would it be in one hundred years time?

Answer 20

Sedimentary or metamorphic

Question 21

What is the structure of the earth?

Answer 21

Crust
Mantle
Outer core
Inner core

Question 22

What is the first layer of the structure of the earth?

Answer 22

Crust … Which is a solid

Question 23

What is the second layer of the earths structure?

Answer 23

Mantle …. Which is a solid/liquid

Question 24

What is the third layer of the earths structure?

Answer 24

Outer core …. Which is a liquid

Question 25

What is the middle of the earth called?

Answer 25

Inner core .... Which is a solid

Question 26

What is a seismic wave ?

Answer 26

Seismic waves from large earthquakes pass throughout the earth

Question 27

Why can we use seismic waves to tell us the earths structure?

Answer 27

As seismic waves pass through the earth they are refracted or bent.

Question 28

How can we identify layers using seismic waves?

Answer 28

The speed of the seismic waves depends on density. We can use the travel-time of seismic waves to identify changes in density with depth, and show that the earth is composed of several layers.

Question 29

Is this statement a p or s wave..... Waves are refracted at the boundaries

Answer 29

P wave | Which stands for primary wave

Question 30

Is this statement a p or S wave... Slow waves

Answer 30

S wave | Which stands for secondary wave

Question 31

Is this statement a p or s wave..... Cannot travel through the outer core

Answer 31

S wave | Which stands for secondary wave

Question 32

Is this statement a p or S wave.... Thai indicates there are layers

Answer 32

P wave Which stands for primary wave

Question 33

Is this statement a p or s wave.... Thai indicates the outer core is liquid

Answer 33

S wave | Which stands for the secondary wave

Question 34

Is this statement a p or s wave.... Travel through liquid and solids

Answer 34

P wave | Which stands for primary wave

Question 35

Is this statement a p or s wave.... Travel through solids only

Answer 35

S wave | Which stands for secondary

Question 36

Is this statement a p or s wave.... Fast waves

Answer 36

P wave | Which stands for primary wave

Question 37

What are the 3 types of rocks?

Answer 37

Sedimentary, igneous and metamorphic