3 Questions
The Earth has 4 distinct ___________: crust, mantle, outer core, and inner core.
layers
The thickness of the crust ranges from 5 km to __________ km.
100
The outer mantle is __________, while the lower mantle is somewhat "plastic" and easily deformed.
solid
Study Notes
- Earth has 4 distinct layers: crust, mantle, outer core, and inner core.
- The crust is the outermost layer and is broken up into tectonic plates.
- The thickness of the crust ranges from 5 km to 100 km.
- The mantle makes up 80% of the Earth's mass and is composed of ferro-magnesium silicate rocks.
- The outer mantle is solid, while the lower mantle is somewhat "plastic" and easily deformed.
- The core has two layers: the liquid outer core made of molten nickel and iron, and the solid inner core made of iron.
- The inner core gives the planet its magnetic features.
- The crust is divided into continental and oceanic crust, with different compositions and ages.
- The asthenosphere is a layer in the upper mantle where convection of molten rock occurs.
- The temperature of the Earth's layers increases as you go deeper into the planet.
Explore the layers of our planet with our Earth Layers Quiz! Test your knowledge of the Earth's crust, mantle, and core, and discover fascinating facts about the different compositions, thicknesses, and temperatures of each layer. Learn about the asthenosphere, tectonic plates, and the magnetic features of the inner core. Challenge yourself and see how much you know about the amazing structure of our home planet.
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