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The crust is only what of earths thickness?
half of earths layer
What is the earths under crust surrounded by?
Earths under crust surrounded by Upper Mantle (35-60 km) .The mantle is composed of sillicate rocks that are rich in iron and magnesium relative to the overlying crust.
Where do volcanoes most commonly happen?
cracks in the plates which make up the crust. the earths crust is not connected. its made up of plates that moves and they are formed by plates pushing together then collapsing. they erupt when it gets a lot of friction from the plates pushing together
How do floods affect the earths crust?
it gets soggy
Is it true that earths crust contains most of earths mass?
No. The crust contains a small fraction of earth's mass. Most of the mass is contained in the mantle.
What is the name of the long deep valleys that are formed by the movement of the earths crust?
rifts
What is the name of the long deep valley that are formed by the movement of earths crust?
rifts
What long deep valleys are formed by the movement of the earths crust?
rift valleys
What is the name of the long deep valleys that are formed by the movement of Earths crust?
rift valleys
What are plate movement?
the movement of earths plates or crust
What is formed through the uplift under the earths crust?
crust
What is formed when plates within the earths crust bend and crack Earth's crust?
When plates within the Earth's crust bend and crack, faults are formed. Faults are fractures in the Earth's crust where movement has occurred along the break. These movements can be either vertical or horizontal, causing earthquakes.
Which of earths layers is formed by volcanic activity?
Crust
What causes stress earths crust?
The movement in earths plates create powerful forces that pull or squeeze the rock in the crust.
What is a geololgist?
a person who studies the movement of the earths crust
Which movement of the Earths crust implies that the continental crust is less dense than the oceanic crust?
Plate tectonic movement and subduction zones.
Which of these is formed when plates of earths crust bend and crack?
a fault
