Types of rocks 🎯 Lesson objectives: For the student to distinguish between the three types of rocks: igneous, sedimentary, and metamorphic....Translate this text using Google Translate.
Types of rocks 🎯 Lesson objectives: For the student to distinguish between the three types of rocks: igneous, sedimentary, and metamorphic. For the student to link the type of rock to its source.Translate this text using Google Translate.
Who among you has visited a mountain or seen rocks of different colors and shapes? Why do you think the rocks are different? Let's find out together!
1. Igneous rocks:
They are formed by volcanoes after magma (lava) cools.
An example from the Saudi environment: the Harrat Rahat rocks south of Medina.
Appearance: dark, hard, and perforated.
2. Sedimentary rocks:
It is formed by the accumulation of layers of sand and clay over time.
Local example: Rocks in the Great Nafud Desert.
Its shape: clear layers, easy to crumble.
3. Metamorphic rocks:
It is formed by the alteration of other rocks due to pressure and heat.
Example: Metamorphic granite rocks in the Hejaz Mountains.
Its shape: its colors are intertwined and strong.
