Spheres of earth and rocks and minerals are the topic we are going to discuss today at “Home Learning Hub-Great Home Learning For All” so let’s get started”.
“Home Learning Hub-Great Home Learning For All”
Spheres of Earth | Rocks, and Minerals
Outline:
Lithosphere
Hydrosphere
Atmosphere
Biosphere
Minerals
Types of Minerals
Rocks
Types of Rocks
One of the spheres of the earth is the lithosphere. The lithosphere is the land area or solid part of the earth which is generally inorganic in nature composed of minerals.
The hydrosphere is another sphere of earth consisting of all the water bodies present on earth in any form such as glaciers, rivers, seas, oceans, ponds, etc.
The atmosphere is the third sphere of the earth which can be defined as the layer or blanket of different gases on the earth’s surface that protects the earth from harmful solar radiations.
Biosphere:
The biosphere is another sphere of earth and can be defined as any type of life present on earth.
Minerals are the chemical/inorganic substances that have specific geometry i.e specific shape or structure and specific chemical composition.
Types of Minerals:
There are two types of minerals namely primary minerals as well as secondary minerals. Primary minerals include quartz, feldspar, and mica i.e these are the examples of primary minerals while secondary minerals include calcite, gypsum, and dolomite.
All minerals in the world are solid except:
- Water
- Mercury
Water and mercury are the only two minerals that are liquid while the rest of the minerals in the world are solid.
Rocks are solid materials that are formed by the aggregation of several similar or different kinds of minerals.
Types of Rocks:
There are three different types of rocks namely igneous rocks, sedimentary rocks, and metamorphic rocks.
Igneous means fire. Igneous rocks are also considered primary rocks and they originated from fire. When molten material solidifies igneous rocks are formed. Sedimentary rocks are formed from igneous rocks such as limestone. Meta means change and morph means shape/form. Metamorphic rocks are found deep into the earth’s crust and when pre-existing rocks such as igneous rocks or sedimentary rocks are bring into extremely high temperature and pressure they change their shape/form and form metamorphic rocks. Metamorphic rocks can be formed from igneous rocks as well as from sedimentary rocks while sedimentary rocks can only be formed from igneous rocks.
0 Comments
Please do not enter any spam link in the comment box.