Rocks can be igneous, sedimentary, or metamorphic. Igneous rocks such as granite form from cooling magma. Sedimentary rocks like sandstone form from compressed sediments and may contain fossils. Metamorphic rocks like marble and quartzite were once igneous or sedimentary rocks but were changed by heat, pressure, or fluids into another type of rock.

1. ROCKS AND
WEATHERING
Made By :- Maria and Maida
VIII-H

2. What are rocks?

3. Igneous Rocks

4. Igneous rocks
• They are volcanic and
form from molten
material.
• There are rocks like
granite, which are
formed by magma
• Granite rocks can be
very old.

5. SEDIMENTARY ROCKS

6. Sedimentary rocks
• Sedimentary rocks are
formed from eroded
fragments of other
rocks or even from the
remains of plants or
animals.
• Fossils are most
frequently found in
sedimentary
rock, which comes in
layers, called strata.

7. Metamorphic rocks

8. METAPHORIC ROCKS
• Metamorphic rocks are
sedimentary or igneous
rocks that have been
transformed by
pressure, heat, or the
intrusion of fluid
• Marble is metamorphosed
limestone, quartzite is
metamorphosed
sandstone, and
gneiss, another common
metamorphic
rock, sometimes begins as
granite.