Ch. 14 Plate Tectonics (8th Grade Science)

The youngest part of the ocean floor is found ____.

A(n) ________ is an underwater mountain chain.

Crust is neither destroyed nor formed along which of the following boundaries?

Plates of the lithosphere float on the ____.

Matching ____ on different continents are evidence for continental drift.

At an oceanic-oceanic convergent plate boundary, ____.

Plates move apart at ____ boundaries.

If two continental plates converge, a subduction zone forms. _______________

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

The boundary between two plates moving together is called a ____.

Seafloor spreading occurs because ____.

The Himalayan mountain range of India was formed at a ____.

The existence of coal beds in Antarctica indicates that the continent once had ____.

While studying the ocean floor, scientists found ____ bands of magnetism.

Continental-continental plate collisions produce ____.

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

Active volcanoes are most likely to form at ____.

The crust and upper mantle make up Earth's ____.

The result of plate movement can be seen at ____.

Some early mapmakers thought that the coastline of S. America matched the coastline of Asia

A vast, underwater mountain chain is called a(n) _________.

One plate is forced under another in a(n)

The driving forces of tectonic plates are related to convection currents in Earth’s ____.

The circulation of material caused by differences in density is called convection.

Many early mapmakers thought Earth’s continents had moved based on ____.

Features found at divergent plate boundaries include ____.

Plates slide past one another at ____.

Plates collide together at a(n)

Scientists have observed that the continents move at speeds of a few centimeters per

Earth's plastic like layer is the ____

As new seafloor moves away from an ocean ridge, the seafloor cools and becomes less dense