Earth's Crust
Which of the two main types of The Earth's crust is denser?
Oceanic / Oceanic Crust
How thick is the continental crust?
25-70 km or about 15-44 mi
How thick is the oceanic crust?
5–10 km (3.1–6.2 mi) thick
What do you call Earth's first crust?
Primary crust or Primordial crust
The two main types of Earth's crust
What are the Oceanic and Continental crust?
The continental crust is _____ than the oceanic crust
Thicker and less dense
Is the oceanic crust younger or older than the continental crust?
Younger
Which of the crust's two types has been estimated to be 2.0 billion years?
The continental crust
It is the top component of the ________
Lithosphere
Where in the world is the continental crust thicker? Give one example
Tibetan Plateau, the Altiplano, or the eastern Baltic Shield
Which layer of the Earth does the oceanic crust belong to?
Crust
How old is the Earth?
4.5 or 4.6 billion years
What is the layer below the crust?
Mantle
What is the continental crust mostly composed of?
Less dense and more felsic rocks
What kind of rocks is the oceanic crust primarily composed of?
Denser, more mafic rocks
Which two elements form water?
Hydrogen and Oxygen
What is the thinnest layer of the Earth?
Crust/ The crust
Does the continental crust float on the mantle or was it the oceanic crust?
Trick question! It's both of them!
What happens to old oceanic crust at subduction zones?
Get destroyed
What is the color of grass?
Green