Grade 8 Science Quarter 2 Reviewer

Front

What are Earth's plates?

Back

Earth's crust is divided into large, rigid plates that move over the mantle, causing geological activity like earthquakes and volcanic eruptions.

Front

What is a fault?

Back

A fault is a break in Earth's crust where rock blocks move relative to each other.

Front

What is a normal fault?

Back

A normal fault is formed by crustal extension (stretching), where the hanging wall moves down relative to the footwall.

Front

What is a reverse fault?

Back

A reverse fault is formed by compression (squeezing of the crust), where the hanging wall moves up relative to the footwall.

Front

What is a strike-slip fault?

Back

A strike-slip fault is where rocks slide past each other horizontally, caused by lateral tectonic forces.

Front

What are P-waves?

Back

P-waves (Primary Waves) are the fastest seismic waves that compress and expand the ground, traveling through solids, liquids, and gases.

Front

What are S-waves?

Back

S-waves (Secondary Waves) are slower than P-waves and cause shearing or shaking perpendicular to wave direction, traveling only through solids.

Front

What are surface waves?

Back

Surface waves travel along Earth's surface, causing intense ground shaking and often more damage than P- and S-waves.

Front

What are Love Waves?

Back

Love Waves move side-to-side horizontally.

Front

What are Rayleigh Waves?

Back

Rayleigh Waves cause rolling motion, both up-and-down and side-to-side.