The Earth´s layers.
What are the three layers of the Earth?
Atmosphere, hydrosphere and geosphere.
What is the geosphere made up of?
Rocks.
What is the Earth´s crust divided into?
Continental crust and oceanic crust.
What types of rocks are there?
Hard, soft and liquid. Rocks made up of 1 component or several components.
What are rocks made up of?
Minerals.
What is the atmosphere?
The layer of air that surrounds the Earth.
What are the three main parts of the geosphere?
The crust, the mantle and the core.
Where is the continental crust?
Under the land.
What are the three groups of rocks?
Igneous, sedimentary and metamorphic rocks.
Name 4 properties of a mineral.
Hardness, lustre, colour and shape.
What is the hydrosphere?
The liquid part of our planet.
The crust is...
the outer and the thinnest layer.
What is the surface of the Earth´s crust like?
Uneven. It can be flat or low and sleep or high.
How are igneous rocks formed?
Some are formed inside the Earth, like granite. Others are made up of lava from volcanoes, like basalt.
Which is the hardest mineral?
Diamond.
What is the geosphere?
The solid part of the Earth.
What is the mantle?
The middle and the thickest layer.
What forms the relief of the Earth?
The shape of the crust.
How are sedimentary rocks formed?
Some are formed from pieces of other rocks, like clay. Others are made up of the remains of living things. For example, coal and petroleum
Name a dull mineral.
Kaolinite.
The geosphere contains...
Continents, islands and seabed.
The core is...
the inner layer.
What are some of the relief features of the Earth?
Mountains, plains, bays, hill, plateaus…
How are metamorphic rocks formed?
These rocks are formed when heat or pressure changes the original rocks. For example: Marble is formed from limestone. Slate is formed from clay.
Name a mineral with a regular shape.
Aragonite.