Forces Shaping Earth: 8th Grade Science

Underwater volcanoes form over ____________.

This is an example of Folded mountains.

Occurs at mid-ocean ridges; plates slide down due to gravity.

This is an example of  Fault-block mountains.

This is an example of Upwarped mountains.

Solid core of iron and nickel.

Earth's lithosphere floats on a plastic-like upper part of the mantle called the asthenosphere.

A ridge under the ocean where plate boundaries meet & crust forms.

Plates pull away & become cooler & sink below other ones when they collide.

Cool layer of rigid rock including cooler, outermost layer of the mantle and crust.

Putty-like layer with a high temperature, and lower pressure than inner mantle.

Warmer matter rises and cooler matter sinks.

The 4 forces that occur at boundaries.

Large fractures in rocks along which movement occurs.

If a mountain loses mass, does the elevation increase or decrease?

This occurs when one plate sinks underneath another.

These mountains are formed from subduction and cooled magma and/or lava.

Liquid layer composed of iron and nickel.