PMA 2 Review

Front

What is a delta?

Back

A triangular shaped plain at the mouth of a river formed when sediment is deposited by flowing water.

Front

What evidence do trilobite fossils provide about Earth's natural processes?

Back

Trilobite fossils are found in both rocky and marine areas, proving that Earth has changed by natural processes.

Front

How does heat from the Earth's core affect tectonic plate movement?

Back

Heated material in the mantle expands and rises towards the crust where it then cools, forming a convection current, which causes plate motion.

Front

What type of plate movement results in a volcano forming at a subduction zone?

Back

When an oceanic and a continental plate collide.

Front

What is conduction in the context of heat transfer?

Back

Conduction is the process of heat transfer through direct contact between materials.

Front

What is a tributary?

Back

A stream or river that flows into a larger river or lake.

Front

What is the significance of sediment deposition in river systems?

Back

Sediment deposition shapes landforms like deltas and floodplains, and affects ecosystems.

Front

What is the role of convection currents in the mantle?

Back

Convection currents in the mantle drive the movement of tectonic plates by transferring heat.

Front

What happens at a subduction zone?

Back

At a subduction zone, one tectonic plate moves under another, often leading to volcanic activity.

Front

What is the difference between oceanic and continental plates?

Back

Oceanic plates are denser and thinner than continental plates, which are thicker and less dense.