1. Volcanoes and Earth Movements
3rd grade

2. Why do things like this happen?
mt st helens eruption 1980

3. Tectonic plates Earth’s crust is not all connected
It is made up up large pieces called “tectonic plates”
these pieces float on the mantle

4. The plates are smashing into, pulling apart, and sliding past each other all the time

5. Plates sliding past each other send shock waves through the crust that we call earthquakes buildings swaying in earthquake :45-1:45

6. Volcanoes
Sometimes, magma (molten rock) from deep in the earth shoots up through the earth’s crust When it reaches the earth’s surface, we call it lava Lava piles up and forms volcanoes

7. Can you model plate tectonics with cookies?
1) plates moving apart
2) plates moving together
3) plates sliding past each other

8. Correct models:
understand this

9. Homework
Read Science Studies Weekly!!!!

10. Works cited https://www.pinterest.com/pin/263460646924715282/
Science studies weekly
tectonics