The Earth

Question 0

Why do they call Earth miracle planet?

Answer 0

They call Earth a miracle planet because it’s the only planet that can let creatures and plants survive.

Question 1

What is another name for Earth.

Answer 1

Another name for Earth is a miracle planet.

Question 2

What fraction of the earth do mountains cover?

Answer 2

Mountains cover almost a tenth of the Earths surface.

Question 3

How many people find that earth is home.

Answer 3

Earth is home to 6 billion people

Question 4

What fraction do deserts cover the earth?

Answer 4

Deserts cover one eight of the Earths surface.

Question 5

What fraction does water cover the earth?

Answer 5

Water covers two thirds of the earths surface.

Question 6

What fraction do forests cover the Earths surface?

Answer 6

Forests cover one quarter of the earth surface.

Question 7

When did the Earth form.

Answer 7

The Earth formed 4.5 billion years ago.

Question 8

What did the Earth used to be?

Answer 8

The Earth used to be a giant boiling sea of molten material.

Question 9

What happened after the Earth began to cool down from a giant hot ball?

Answer 9

When the earth cooled the heavier material sank and the lighter material floated.

Question 10

What caused the Earth to have layers?

Answer 10

The heavy and light material caused the layers of the Earth.

Question 11

What are the three main layers of the Earth?

Answer 11

The three main layers of the Earth are….
The crust
The mantle
The core

Question 12

What is the crust and describe it?

Answer 12

outer skin of the Earth,10 km under the ocean, 60 km thick above the crust are the continents.

Question 13

What is mantle?

Answer 13

Below the crust, is 4,000C, in a molten or semi molten state called magma.

Question 14

What is the core?

Answer 14

in the centre of the Earth, made of nickel and iron, is over 5,000C the heat from the core causes the the magma in the mantle to go upwards.

Question 15

What are plate tectonics?

Answer 15

Plate tectonics is the earth broken up in a number of plates moving continuosly at different speeds and times but always move two centimetres per year.

Question 16

How many large plates are in the Earth?

Answer 16

There are seven large plates in the world.

Question 17

Name three plates.

Answer 17

The American plate, The African plate and The Eurasian plate are three plates.

Question 18

What is a destructive boundary?

Answer 18

A destructive plate is when two plates collide and make big pressure the heavier plate goes downwards and into the mantle and melts.

Question 19

What is a constructive boundary?

Answer 19

A constructive boundary is when two plates pull apart and magma rises and cools to make more crust.

Question 20

What happens when an enormous plate moves?

Answer 20

When large plates move a large amount of energy is let loose which leads to volacanic, earthquake and mountain activity.

Question 21

Why do plates move as they float on top of the mantle?

Answer 21

The plates move because of the friction between the convection currents and plate.

Question 22

What did the earth look like after the earth had its layers

Answer 22

All of the countries in the earth were together and the continent was called Pangaea but soon drifted apart.

Question 23

Name what happened to Pangaea when it drifted apart.

Answer 23

When Pangaea drifted apart the process was a continental drift

Question 24

Where do most volcanic activity happen?

Answer 24

Most volcanic activity sets take place along the margin of plates.

Question 25

What can volcanic activity result in.?

Answer 25

Volcanic activity can result in mid-ocean ridges and volcanic cones.

Question 26

What is a mid-ocean ridge?

Answer 26

A mid-ocean ridge is an underwater mountain range.

Question 27

How are mid-ocean ridges formed?

Answer 27

A mid-ocean ridge is formed when two plates pull apart and magma rises to fill the gap.

Question 28

What are hot springs in Iceland used for?

Answer 28

The hot springs in Iceland are used for geothermal energy.

Question 29

Where does the mid-atlantic ridge run and how long does it run?

Answer 29

The mid-atlantic ridge runs north to south and 16,000km long?

Question 30

What are the three volcanoes in Iceland?

Answer 30

Krafla hekla and surtsey are three volcanoes in Iceland.

Question 31

What is hot spring

Answer 31

magma heat underground water

Question 32

What are hot springs used for?

Answer 32

Hot springs are used for spas geothermal energy, heat and for green houses.

Question 33

What ae volcanic mountains?

Answer 33

Volcanic mountains is when a hole in the crust called a vent brings up magma caused pressure.

Question 34

What is the pacific ring of fire?

Answer 34

A number of volcanoes in the shape of cirlce.

Question 35

How does a volcano erupt?

Answer 35

A volcano erupts when the magma from the magma chamber rises through the vent and is out from the crater and becomes a layer of the volcano.

Question 36

What an active volcano?

Answer 36

A volcano that hasn’t erupted for about five years or so but is expected to erupt.

Question 37

What is a dormant volcano?

Answer 37

A volcano that hasn’t erupted in a more than decades or so and is expecting to erupt.

Question 38

What an extinct volcano?

Answer 38

An volcano that hasn’t erupted for centuries.