Earth Structure
In the beginning, Earth was a body made of ______ rock.
liquid
Name the layers of earth
Crust, mantle and core
When tectonic plates, they interact with each other at __________________
plate boundaries
Earthquakes are a result of an __________ of pressure in the _________ suddenly releasing.
accumulation, lithosphere
_________ is the vent that allows the magma to travel up from the magma chamber to the surface.
Chimney
________ is the outer layer of the earth.
Crust
___________ is the semi-solid layer that extends from under the crust and reaches a depth of around 2900km
Mantle or Mesophere
A _____________ boundary happens when 2 plates are moving away from each other.
divergent plate
What is the point of origin of an earthquake called?
hypocentre
When Volcanoes erupt what all comes out of them?
lava, gases and ash
_________ is made up of volcanic rock.
Oceanic crust
_________ represents the 60% of the Earth's mass
A _____________ boundary happens when 2 plates slide past each other.
transform plate
What is the point on earth's surface directly above the hypocentre called?
epicentre
__________ is the opening at the top of the Volcano from where the magma comes out.
Crater
The Continental crust is at its thickest in ______
the Himalayas
Iron and nickel
A _____________ boundary happens when 2 plates collide with each other.
convergent plate
Which scale is used to measure the magnitude of earthquakes?
Richter Scale
The area where magma accumulates under the earth's surface is called _____________
Magma chamber
The thickness of Continental Crust is ______
35 km
The average temperature of mantle or mesophere is _______
3000 degrees Celsius
Which 2 tectonic plates collided to form the Himalayas?
Indian and Eurasian
Which scale measures the intensity of an earthquake based on the damage and destruction it causes?
Mercalli Scale
The lava from a volcano can reach the temperature of around _______ degree Celsius.
1000