Earth science

1. DR BC ROY
ACADAMEY OF
PROFESSIONAL COLLEGE
PRESENTATION
ON
ROCKS AND MINERALS
Presented By
BBA – Sec-B Harsh kumar singh

2. POWER POINT PRESENTATION
ON
ROCKS AND MINERALS
 NAME: HARSH KUMAR SINGH
 COLLEGE ROLL No. 2306082
 UNIVERSITY ROLL NO:32341923055
 PAPER NAME : EARTH SCIENCE
 PAPER CODE : GE1B-03

3. CONTENT
 MINERALS
 MOST COMMON ELEMENTS IN MINERALS
 EXAMPLES OF MINERALS
 PROPERTIES OF MINERALS
 THREETESTERS
 ROCKS
 CONCLUSION

4. ROCKS AND MINERALS

5. MINERALS
 Minerals are always solid with particles in
repeating patterns crystals.
 They are only found in nature.
 They are formed in the Earth’s mantle (from
heat and pressure)- near the surface when
oxygen, calcium and carbon combine in the
ocean, and when hot, mineral-rich water
moves slowly through the cracks in the
Earth’s crust

6. MOST COMMON ELEMENTS IN
MINERALS:
 Oxygen
 Silicon
 Aluminium
 Iron
 Calcium
 Sodium
 Potassium
 Magnesium

7. EXAMPLES OF MINERALS
Quartz Iron Calcite

8. PROPERTIES OF MINERALS
 Streak: colour of the powder
left behind when you rub a mineral
against a white tile called a streak
plate.
 Luster: the way the surface of a
mineral reflects light, either metallic
(shiny) or nonmetallic (dull).
 Hardness: a mineral’s ability to
resist being scratched as measured
by Mohs’s hardness scale.

9. What are three testers that
can be used to determine a
mineral’s hardness?

10. ROCKS
 Rocks are made up of two or more minerals.
 They are not crystals
 Some rocks form near the surface while others
deep in the crust.
 There areTHREE major categories of Rocks:
1. IGENOUS
2.SEDIMENTARY
3.METAMORPHIC

11. IGNEOUS ROCKS
Form when melted rocks harden
Fine-grained rocks (smooth) are from lava
Coarse –grained rocks (rough) are from magma

12. SEDIMENTARY ROCKS
 Formed from layers of sediment, created
by weathering, and erosion, that are
dropped from moving water, and are
squeezed and stuck together.
 Fossils are usually found in sedimentary
rocks.
 Conglomerate rocks have large pieces
and rom in shallow in water.
 Siltstone is made up of smaller pices
 Limestone is made up of fine grained rock
 Sandstone is made up of grains the size of
sand.

13. METAMORPHIC ROCKS
 These are formed from other rocks that are
transformed by the high pressure and
temperature in deep zones of the Earth’s crust.
The process is called metamorphism.
 Existing rocks are changed through high heat
and pressure to form different rocks
 Morph = change

14. ROCK CYCLE
 Like most cycles, the materials are used over .
 Process include
weathering, erosion, deposition, melting,
compaction, and cementation.

16. CONCLUSION
 Rocks and minerals are found everywhere on
earth.
 Rocks are made from minerals and can contain
several different kinds.
 Rocks can be divided into 3 different groups
based on their properties.
 People use rocks in many different ways!