1. Weathering Test make-up Friday 7am
Tuesday, April 23, 2019
Objective:
YWBAT recognize and describe the layers of the Earth.
Drill:
How do scientists know about the interior of the Earth?
Homework
Comic due Friday
Weathering Test make-up Friday 7am

2. Answer
Scientists measure the different speeds at which seismic waves travel through different parts of the Earth. This indicates the density and thickness of each layer the waves pass through.

3. Did you know…?
Litho- means rock. The lithoshpere is the Earth’s solid, rocky crust.

4. Today’s Activities Drill Read Chapter 7, Section 1
DRW – Plate tectonics: Section 1
Comic
Conclusion

5. True or False: The crust is the Earth’s only solid layer.
Closure
True or False: The crust is the Earth’s only solid layer.

6. Closure Answer
False