MORE ABOUT ROCKS AND THE TYPES OF ROCKS.pptx

Science materials

1. Marshall Cavendish Cambridge Primary Science (2nd Edition) Stage 6 CHAPTER 9 MORE ABOUT ROCKS

2. LESSON 1: TYPES OF ROCKS LEARNING AIM Learn that rocks can be classified into different types and describe the features of each type of rock. Lesson 1: Types Of Rocks

3. CHAPTER TRIGGER How will you describe the rock in this picture ? large, red, have distinct layers, etc. Are all rocks the same? No. Lesson 1: Types Of Rocks

4. CHAPTER TRIGGER How do you think rocks are formed? Depends with the type of the rocks. Lesson 1: Types Of Rocks

5. PRE-EVALUATION Lesson 1: Types Of Rocks

6. MAIN CONCEPT What difference do you notice between the two rocks? The basalt has pores, while the granite has crystals . Do you think the two rocks are formed in the same way? basalt granite Lesson 1: Types Of Rocks

7. MAIN CONCEPT Rocks can be classified based on how they are formed. Igneous rocks can be formed when magma cools and solidifies underground. These rocks have large crystals. Igneous rocks can also be formed on the Earth’s surface from lava. These rocks have pores. basalt granite Lesson 1: Types Of Rocks

8. MAIN CONCEPT What is a feature of the rock that we can easily observe in this picture? It has layers . How do you think the layers of the rock were formed? Layers of sediment build up and are compressed on top of the other over time. Lesson 1: Types Of Rocks

9. MAIN CONCEPT Sedimentary rocks are formed when layers of sediment build up and are compressed on top of the other over time. Sedimentary rocks have layers, are soft and break easily. Lesson 1: Types Of Rocks

10. MAIN CONCEPT What are the features of these rocks? The gneiss has distinct layers, while the quartzite has crystals . gneiss quartzite Lesson 1: Types Of Rocks

11. MAIN CONCEPT Metamorphic rocks are formed when igneous or sedimentary rocks undergo changes caused by compression or high temperature. Some metamorphic rocks have clear ribbonlike or coloured layers. Some metamorphic rocks have shiny crystals. gneiss quartzite Lesson 1: Types Of Rocks

12. CRITICAL THINKING Which type of rock is usually found near volcanoes? Why ? Igneous rock. Lava emerges from volcanoes and flows slowly, so it cools down and solidifies near the volcanoes. Lesson 1: Types Of Rocks

13. Identify the type of rock that matches each description. ACTIVITY igneous rock sedimentary rock metamorphic rock I have small, shiny crystals. I have pores as I was formed from lava that cools quickly. I have layers made of small particles of other rocks. Lesson 1: Types Of Rocks

14. I have small, shiny crystals. I have pores as I was formed from lava that cools quickly. I have layers made of small particles of other rocks. Identify the type of rock that matches each description. ACTIVITY igneous rock sedimentary rock metamorphic rock Lesson 1: Types Of Rocks

15. True False There are three types of rocks based on how they are formed. All rocks are directly formed from magma. Tick the correct box beside each sentence. ✓ ✓ WRAP-UP Lesson 1: Types Of Rocks

16. True False There are three types of rocks based on how they are formed. All rocks are directly formed from magma. Tick the correct box beside each sentence. ✓ ✓ WRAP-UP Lesson 1: Types Of Rocks

17. HOMEWORK Complete Homework Worksheet 1 (Types of Rocks). Lesson 1: Types Of Rocks

18. Slides 1, 3: rock at Coyote Buttes – ID 26201700 © Sumikophoto | Dreamstime.com