Tectonic Plates

3. Wegener’s 3 pieces of evidence to support continental drift – _________, Fossils, and climate
4. an organism preserved in rock
7. a large, broken section of Earth’s lithosphere
9. <— —>
10. most scientists __________ his theory because he was unable to prove the driving force causing the movement of the continents
13. convection currents act as giant “________” and drive the movement of Earth’s plates
14. the continuous heating and cooling of magma in the mantle creates _________ currents
16. _______ and South America look as though they could fit together like puzzle pieces
18. scientists believe convection ________ within the Earth’s mantle are slowly causing the plates to move
19. scientists estimate that most of Earth’s plates move at a rate of 2.5 _________ per year
20. a theory that states that the continents are slowly moving or “drifting” to new locations

1. there are _____ main types of crust that cover Earth’s surface
2. an extinct fern-like plant whose fossil remains have been found on several continents separated by large distances
5. German scientist and meteorologist
6. plate _________ is a location where 2 tectonic plates meet
8. plate _________ is a theory that the Earth’s lithosphere is broken into plates that move slowly over time
11. ________ boundaries is a location where 2 tectonic plates slide past each other
12. Wegener’s 3 pieces of evidence to support continental drift – Landforms, _______, and climate
15. all of Earth’s continents joined together as one giant landmass
17. —> <—