1. Identifying Major Groups of Rocks and the Processes of their Formation
4th Grade Science
By: Jessica Whitlock

2. What are Rocks? What do you already know about rocks? Shape? Size?
Different Kinds?
Location?
Made out of?
What are Rocks?

3. What are Rocks?
Rocks are made up of a mixture of minerals and other materials.
*Over 2500 Minerals that we know of*
Rocks come in all shapes, sizes, and colors because there are formed from one of more minerals
Rocks are formed in one of these three groups

4. Igneous Rocks Igneous is a latin word that means fire
These rocks are formed when temperatures in earth’s crust begin to rise and magma begins to melt
After the magma (Lava) cools and begins to harden igneous rocks are formed.

5. Igneous Magma Examples: -Pumice -Rhyolite Cooling and Hardening
Melting
Igneous
Examples:
-Pumice
-Rhyolite

6. Sedimentary Rocks
Igneous rocks turn into sediments due to weathering and erosion.
When these sediments are compacted together sedimentary rocks are formed.
Fossils form in sedimentary rocks
Example: -Sandstone

7. Fossils
Fossils are the remains of organisms that lived millions years ago. They are found in sedimentary rocks.
Fossils help provide scientists with important evidence to help determine what happened in Earth’s history and when it happened.

8. Igneous Sedimentary Magma Sediments Cooling and Hardening Melting
Weathering
& Erosion
Sedimentary
Sediments
Compacting

9. Metamorphic Rocks
Sedimentary rocks become pushed down into the ground and heat and pressure changes them into metamorphic rocks.
Some examples:
-Slate
- Marble

10. Guess the Rock??? Metamorphic (Slate) Igneous (Pumice) Sedimentary
(Lime stone)

11. -This is the ever changing process that rocks go through.
The Rock Cycle
-This is the ever changing process that rocks go through.
Cooling and
Hardening
Igneous
Rocks
Magma
Melting
Weathering
& Erosion
Metamorphic
Sediments
Sedimentary
Compacting
Heat and Pressure

12. Match the statement on the left with the answer on the right
Quick Quiz
Match the statement on the left with the answer on the right
1. Help determine
what happened in earth’s history
A. Metamorphic
Rocks
B. Rock Cycle
2. Slate is an
example of...
C. Igneous
Rocks
3. Ever changing process rocks go through
D. Fossils
4. Are formed from
magma after it cools.
E. Sedimentary
Rocks
5. These consists
of Sediments