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Rocks – Are They All the Same?. No! Color Size Texture Grain CHEMICAL MAKEUP.

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Presentation on theme: "Rocks – Are They All the Same?. No! Color Size Texture Grain CHEMICAL MAKEUP."— Presentation transcript:

1 Rocks – Are They All the Same?

2 No! Color Size Texture Grain CHEMICAL MAKEUP

3 The Rock Cycle is like an endless life cycle for rocks.

4 Examples of how some rocks are used.

5 DAY 1 – Igneous Rocks Form when hot, liquid rock cools and hardens in or around a volcano. Extrusive = – Volcanic Intrusive = – Plutonic

6 DAY 1 – Igneous Rocks Form when hot, liquid rock cools and hardens in or around a volcano. Extrusive = – Volcanic Intrusive = – Plutonic

7 DAY 1 – Igneous Rocks Form when hot, liquid rock cools and hardens in or around a volcano. Extrusive = Volcanic Exit = outside

8 DAY 1 – Igneous Rocks Form when hot, liquid rock cools and hardens in or around a volcano. IN-trusive = INside. Plutonic = underground.

9 DAY 1 – Igneous Rocks Form when hot, liquid rock cools and hardens in or around a volcano.

10 DAY 1 – Igneous Rocks Form when hot, liquid rock cools and hardens in or around a volcano. Extrusive = – Volcanic Intrusive = – Plutonic

11 TASKS – Day 1 Observe your igneous rock forming Categorize the real rocks. Can you classify which are intrusive and which are extrusive? Be able to explain. ____________________________________ Duties: Everyone observes and contributes. All colors must be equally shown on your paper.

12 SEDIMENTARY ROCKS Form when SAND, SHELLS, ROCKS, or other materials are eroded to other locations

13 Coal / Geologic Time Scale

14 Coal /Carboniferous Period Atmospheric oxygen levels peaked around 35 percent, compared with 21 percent today Some centipedes six feet Dragonflies that grew to the size of seagulls (wingspan of 2.5 feet)

15 Coal / Sedimentary Carboniferous period in geologic time = abundance of plant life. Lots of plants = Lots of coal aka CARBONiferous period

16 Coal/Carboniferous

17 SEDIMENTARY ROCKS Form when SAND, SHELLS, ROCKS, or other materials are eroded to other locations Do heavier sediments travel the farthest?

18 SEDIMENTARY ROCKS Compaction and Cementation

19 SEDIMENTARY ROCKS Can have layers

20 TASKS – Day 2 Can you think of other foods that could be “sedimentary” (hint: think layers) Label each rock as: – “clastic” (formed from other rocks) – “organic” (formed from life) Create your own sedimentary rock. ____________________________________ Duties: Everyone contributes. All colors must be equally shown on your paper.

21 Day 3 – Metamorphic Rocks Form pre-existing rock Changes by Heat and Pressure

22 Day 3 – Metamorphic Rocks How are they Formed? Pressures deep inside the Earth – tectonic processes such as continental collisions – heated up by an intrusion of hot molten rock

23 Two Types of Metamorphic Rocks Foliated = layers/bands (folds) ex: Gneiss Non-foliated = no layers/bands ex: Marble

24 Tasks – Day 3 Label each rock as foliated and non-foliated Create a “family tree” of metamorphic rocks from their original rocks. (If applicable, place down actual rocks next to each other.) Continue Sedimentary Rock creation Next class we will talk about the rock cycle.


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