1. Thursday, January 17, 2019 B-Day
Objective:
YWBAT explain the processes that change one type of rock to another.
Drill:
How does the cooling rate of lava or magma affect the texture of an igneous rock?
Homework
Practice rock cycle raps
Open notes WOW quiz on Wednesday

2. Answer
When magma cools slowly, crystals have a long time to grow, so the igneous rock that forms is coarse- grained. When magma cools quickly, crystals have a short time to grow, so the igneous rock that forms is fine- grained.

3. Did you know…?
The oldest known rock lies in Canada. The Acasta gneiss, a metamorphic rock, is billion years old.

4. Today’s Activities
Drill
Rock Cycle Rap
Conclusion

5. Does the rock cycle only go in one direction? Explain
Closure Question
Does the rock cycle only go in one direction? Explain

6. Conclusion Answer
No – the rock cycle goes in many different directions. Rocks are constantly changing.