Layers of the Earth
How many layers is the earth’s crust composed of according to the video?
Four
What do we call the movement of the Earth’s crust?
Plate tectonics
How many types of mountains are there?
Three
Where can you find the crater of a volcano?
At the surface
At what kind of boundary are earthquakes common?
Transform
How many major plates are there?
Eight
What is it called when plates move together?
Converging
What is the most common type of mountain?
Fold mountains
Active volcanoes do not erupt, true or false?
False
Where is an earthquake felt most strongly?
At the epicentre
What is the thinnest layer?
The crust
What is it called when parallel plates move past each other?
Transform boundary
Synclines describes the upwards movements in the earth’s crust, true or false?
False
Why is the land around a volcano ideal for agriculture?
It is rich in minerals and so it is fertile
What is the Richter Scale
The way we measure the strength of an earthquake
Which layer is made of a solid ball of Iron?
The Inner Core
How fast do the plates move on average per year?
1 - 10cm
When was Mount Everest formed?
25 million years ago
How many active volcanoes are there in the world?
500
How often do earthquakes happen?
Every 30 seconds
Can you name three of the major plates?
African, Antarctic, Eurasian, North American, South American, India-Australian, Nazca and the Pacific plates
What are convection currents?
The circular movement of the magma in the mantle caused by heating and cooling
What famous example of a dome mountain is discussed in the video?
Mount Rushmore
What is the subduction zone?
The point at which one plate is forced underneath another
What is the epicentre of an earthquake?
The point on the earth’s surface immediately above the focus