Share Rocks & Minerals - 4th grade
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What is defined as "all of the Earth’s layers of minerals and rocks"?
Geosphere
What is the geosphere?
All of the Earth’s layers of minerals and rocks
Name three layers of the Earth
Crust, mantle and core
What is the top Earth´s layer, where we live?
The crust
What is the crust?
the top Earth´s layer, where we live
What is the mantle?
The middle layer of hot solid rock and hot liquid magma
What is the super-hot Earth´s layer, with a solid centre?
The core
Are minerals solid, liquid or gas?
Solid
Are minerals natural or man - made?
Natural
Minerals are solid, inorganic and natural. Explain two more characteristics of minerals
They have a definite chemical composition and a crystalline structure
Minerals have specific properties: colour, lustre, shape and...
hardness
What is a "mixture of different minerals"?
A rock
What type of rocks are formed when small pieces of rock are pressed together over time?
Sedimentary rocks
How are sedimentary rocks formed?
They are formed when small pieces of rock (sediments) are pressed together over time
What type of rocks are formed when lava or magma cools down and turns into solid rock?
Igneous rocks
How are igneous rocks formed?
They are formed when lava or magma cools down and turns into solid rock.
