Ch. 7: Plate Tectonics

The crust and upper mantle make up Earth's

The result of plate movement can be seen at

Continental-continental plate collisions produce

The youngest rocks on the ocean floor are located

A vast, underwater mountain chain is called

Continental drift states that continents have moved ___ to the current location.

Scientists have observes that the continents move apart or come together at speeds of a few centimeters per

What evidence suggests that continents were once joined?

Matching ___ on different continents are evidence for continental drift

In order to complete a convection current, the rising material must eventually ____ Earth.

The youngest part of the ocean floor is found

The presence of the same ____ on several continents supports the hypothesis of continental drift.

Which scientist is credited with the continental drift hypothesis?

The ____ is an example of a transform boundary

The Himalayan mountain range of India was formed at

The hypothesis that continents have slowly moved to their current locations is called

A ____ can also form when two oceanic plate collide

_____ are formed when two continental plates collide

The youngest rocks on the ocean floor are located

What is Pangaea?

The boundary between two plates moving together is called a

_____ currents inside Earth might drive plate motion

Plates slide past one another at

Plates of the lithosphere float on the

Seafloor spreading occurs because

A ___ is a sensitive device used to detect magnetic fields on the seafloor.

Active volcanoes are most likely to form at a

Why was Wegener's continental drift hypothesis rejected when it was proposed?

Plates move apart at ____ boundaries

A fossil plant that helps support the theory of continental drift is