UNIT TEST: CLIMATE (GRADE 8)

Front

What is plate tectonics?

Back

The theory that explains the structure and movement of Earth's lithosphere, which is divided into tectonic plates that float on the semi-fluid asthenosphere.

Front

What evidence supports the theory of plate tectonics?

Back

Similar types of fossils found on different continents, matching rock formations, and the fit of continental coastlines.

Front

What is a convergent boundary?

Back

A tectonic plate boundary where two plates move toward each other, often resulting in mountain formation or volcanic activity.

Front

What is subduction?

Back

The process where one tectonic plate moves under another and sinks into the mantle, recycling Earth's crust.

Front

What are convection currents?

Back

The movement of fluid caused by differences in temperature and density, driving the movement of tectonic plates.

Front

What is the primary cause of tectonic plate movement?

Back

Convection currents in the mantle.

Front

What is the significance of the Rocky Mountains and Scandinavian Mountains having similar rock formations?

Back

It suggests that these mountain ranges were once part of the same landmass, providing evidence for plate tectonics.

Front

What is a divergent boundary?

Back

A tectonic plate boundary where two plates move away from each other, often resulting in sea-floor spreading.

Front

What is sea-floor spreading?

Back

The process by which new oceanic crust is formed at mid-ocean ridges as tectonic plates pull apart.

Front

What are tectonic plates?

Back

Large sections of Earth's lithosphere that move and interact at their boundaries, causing geological activity.