Plate Tectoniv

Question 1

What are plates

Answer 1

Tectonic Plates are parts large parts of the earths crust split up into continents which sometimes move causing earthquakes

Question 2

What are convection currents

Answer 2

Convection currents are caused when tectonic plates which are broken up into several large sections grind against each other causing force and pressure to build up and release above land

Question 3

What is a volcano

Answer 3

A volcano is a opening or rupture in the earth from where molten rock called lava emerges

Question 4

What other substances are released during a volcanic eruption

Answer 4

Ash and harmful gases like chlorine and sulfur dioxide are released during the eruption, which causes the volcano to smell like rotten eggs

Question 5

What are the 3 types of volcanoes

Answer 5

Active volcanoes are volcanoes likely to erupt sooner or later .eg mt etna
Dormant volcanoes are volcanoes not likely to erupt for a while .e.g. kilomonjaro
Extinct volcanoes are volcanoes never to erupt again . E.g. Olympus mons on mars

Question 6

Why do people live near volcanoes

Answer 6

Geothermal energy provides low carbon , renewable energy
Tourists are often attracted to volcanoes and locals can often make money out of that
Broken down lava makes a very fertile soil which is perfect for farming

Question 7

What is an earthquake

Answer 7

An earthquake is a seismic wave of energy caused by tectonic plates grinding against each other
They often begin near plate boundaries

Question 8

What is the scale that earthquakes are measured in

Answer 8

They re measured in the Richter scale from 1 to 10

Question 9

Where can earthquakes start and where are the most common and destructive

Answer 9

They can appear at all 4 boundaries but the worst are at destructive and constructive boundaries

Question 10

What are the 7 continental plates

Answer 10

They include Africa , Antarctica, Asia, Oceania, North America , Europe and South America

Question 11

What are the 4 plate boundaries and what happens at them

Answer 11

Constructive plate boundaries push the plates away from each other
Destructive plate boundaries pull the plates below the ground , grinding the plate against each other
Collision plate boundaries grind against each other sending out seismic waves as a result of this
Conservative plate boundaries slide against each other sending out small seismic waves