Homework Wednesday, April 24, 2019 B-Day Rock cycle raps due tomorrow Objective: YWBAT explain how the cooling rate of magma affects the properties of igneous rock. Drill: Do you think rocks that cooled and solidified from lava on Earth’s surface would look different from those that cooled and solidified from magma inside the Earth? Explain your answer. Homework Rock cycle raps due tomorrow Open notes WOW quiz tomorrow

Answer Extrusive – Lava that cools and solidifies on the Earth’s surface forms an Igneous Rock with a fine grained texture Instrusive – Magma that cools and solidifies inside the Earth’s surface forms Igneous Rock with a course grained texture

Did you know…? Pumice is an unusual, lightweight rock formed when molten rock is rapidly blown out of a volcano, forming bubbles as it quickly loses pressure and cools at the same time.

Today’s Activities Drill Rock Cycle Raps Conclusion

Closure Question How does the cooling rate of lava or magma affect the texture of an igneous rock?

Conclusion Answer Slow cooling magma = course-grained. Quick cooling magma = fine- grained.