Earthquakes Flashcards
Layers of the earth
Crust
Mantle
Outer core
Inner core
Continental crust 3 features
Granite
Lighter
Older
Oceanic 3 features
Basalt
Heavier
Younger
What part of earth do cc form
Mantle
Why do cc form
For the plates to move
Constructive and destructive hazards
Volcanoes and small earthquakes
Collision and conservative hazards
Earthquakes only
What is an earthquake
Earthquakes are vibrations by earth movements at plate boundaries and at motor fault lines
Where are most severe earthquakes
Conservative and destructive
Focus
The point under the ground that the shock waves originate from
Epicentre
The point kn the griund directly above the focus of an earthquake where the vibration is greatest
Magnitude
The anount of energy an earthquake gives out
Richter scale
The magnitude of an earthquake can be measured using richter scale.each point on the scale is 10x bigger than below
Seismograph
An instrument that measures the shaking of the griund to record the strength of an earthquake. It records the vibrations on a traph called a seismogram.
Seismic waves
The energy from an earthquake traveling through
