Earth’s Layers Review
Density / Composition / Thickness / TemperatureCrust / 1
(least dense) / Rock / 5-20 miles / 20 ºC - 870 ºC
Mantle / 2 / Molten rock / 1800 miles / 870 ºC – 2,200 ºC
Outer core / 3 / Liquid / 800 miles / 2,200 ºC – 5,000 ºC
Inner core / 4
(most dense) / Solid metal / 1400 miles / 5,000 ºC
The upper crust is made primarily of which type of rock?
- sedimentary
What are the five elements that make up 90% of earth’s crust?
- oxygen (50%), silicon, aluminum, iron and calcium
Which two elements are found in the inner and outer cores?
- iron and nickel
Be able to label the layers of the earth
- in order from outer to inner layer: crust, lithosphere, asthenosphere, mantle, outer core, inner core
Density
- Definition: a property of matter representing the mass per unit volume
- AKA- the amount of “stuff” in a given space
- Example: limestone is more dense than water, that is why it sinks
Tectonic plates
- Solid and found in the lithosphere
- Move around on top of the asthenosphere
Be able to compare and contrast the lithosphere and asthenosphere, including thickness, composition, temperature, and density. Tectonic plates should also be mentioned.
Earth’s Layers Review
Density / Composition / Thickness / TemperatureCrust
Mantle
Outer core
Inner core
The upper crust is made primarily of which type of rock?
- ______
What are the five elements that make up 90% of earth’s crust?
- ______
Which two elements are found in the inner and outer cores?
- ______
Be able to label the layers of the earth
- in order from outer to inner layer: ______
Density
- Definition: a property of matter representing the mass per unit volume
- AKA- ______
- Example: ______
Tectonic plates
- ______
- ______
Be able to compare and contrast the lithosphere and asthenosphere, including thickness, composition, temperature, and density. Tectonic plates should also be mentioned.
Earth’s Layers Review
Density / Composition / Thickness / TemperatureCrust / (least dense) / 5-20 miles / 20 ºC - 870 ºC
Mantle / Molten rock / miles / 870 ºC – 2,200 ºC
Outer core / 800 miles / 2,200 ºC – 5,000 ºC
Inner core / (most dense) / Solid metal / miles / ºC
The upper crust is made primarily of which type of rock?
- ______
What are the five elements that make up 90% of earth’s crust?
- oxygen (_____%), silicon, aluminum, iron and calcium
Which two elements are found in the inner and outer cores?
- iron and ______
Be able to label the layers of the earth
- in order from outer to inner layer: crust, lithosphere, asthenosphere, mantle, outer core, ______
Density
- Definition: a property of matter representing the mass per unit volume
- AKA- the amount of “stuff” in a given space
- Example: limestone is more dense than water, ______
Tectonic plates
- Solid and found in the ______
- Move around on top of the ______
Be able to compare and contrast the lithosphere and asthenosphere, including thickness, composition, temperature, and density. Tectonic plates should also be mentioned.