Abeka Science Quarter Exam Grade 8

General term for any piece of solid volcanic ejecta

• pyroclast

• aa

• lapilli

• volcanic bomb

The narrow zone of active volcanoes that nearly encircles of pacific basin

• Ring of fire

• tectonic plate

• pyroclast

• volcanic ash

The hardness scale of a minerals rated from softest the hardest on a scale of 1 to 10

• Richter scale

• moment magnitude

• Mohs

The group in an experiment in which the test is performed

• control

• experimental

• variable

The fastest type of earthquake wave

• P wave

• S wave

• Surface wave

Deposit of sand, mineral fragments, organic materials usually left by wind or water

• Mohos

• sediments

• silicas

The solid layer of rock beneath the soil

• subsoil

• limestone

• shale

• bedrock

Smaller earthquakes that follow a major earthquake.

• faults

• hypoquakes

• aftershocks

• tectons

Mining which involves miners removing pillars in a specific order to allow the least stress on the walls and ceiling of the mine

• retreat mining

• longwall mining

• continuous mining

• underground mining

Rock formed from cooled magma or lava solidifies

• sedimantary

• igneous

• limestone

• metamorphic