Download Plate Tectonics U2L4 Cloze Name: ______ 1. The supercontinent

Plate Tectonics U2L4 Cloze
Name: ___________
1. The supercontinent called ________ formed 300 million
years ago and began to break up 200 million years ago.
2. The process by which new oceanic lithosphere sea floor
forms when magma rises to Earth’s surface, called ________ _________, occurs at mid-ocean ridges and solidifies, as
older existing sea floor moves away from the ridge.
3. The theory Wegner referred to as ________ ________
explains how large pieces of the lithosphere, called plates,
move and change shape.
4. Blocks of lithosphere called _______ ________ consist of
the crust and the rigid, outermost part of the mantle.
5. A ________ boundary is where tectonic plates are
colliding.
6. A ________ boundary is where tectonic plates are
separating.
7. A ________ boundary is where tectonic plates are sliding
past each other.
8. The movement of matter called ________ is due to
differences in density that are caused by temperature
variations.