Learning objective: by the end of the session, you should be able to;
a)define the terms minerals and rocks.
b)state the characteristics of minerals.
Minerals and Rocks
Welcome to our lesson on minerals and rocks. In this session we shall define minerals and rocks, state their characteristics, and classify rocks.These are some of the materials made from minerals and rocks;
Minerals and rocks can be found in our surroundings.
Definition of Minerals and Rocks
Minerals can be defined as organic or inorganic substances which occur naturally on or beneath the earths surface. Minerals have a definite chemical composition and physical properties. They contain common elements such as oxygen, silicon, aluminum, iron, calcium, magnesium, sodium, potassium, titanium and carbon A rock is a substance that is a mixture of mineral particles forming part of the earth crust.
Activity Fill in the missing letters to complete the cross word.
A mineral common in many igneous rocks
Rocks with vesicular texture usually have a surface.
rocks with low silica content are described as
sedimentary rocks are usually arranged
rocks with high silica content are described to as
it can be used t distinguish different types of rocks
remains of living organisms embedded in sedimentary rocks help in the formation of this
metamorphic rocks are rocks that have undergone -____________________
rocks with this texture are formed as fragments of individual rocks
structural features in rocks which may result from folding
rocks formed when magma or lava cools slowly are usually
the overall appearance of a rock in terms of the size and arrangements of its crystals.
rocks with fine grains are usually in weight.
the process by which rock mineral crystals are changed
materials compacted together to form layers of rock.
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