The Fundamentals of Porosity and Permeability

What measures the amount of empty space in a material?

• Viscosity

• Density

• Porosity

• Permeability

Which material is mentioned as having large grains that leave a lot of space between them?

• Gravel

• Clay

• Sand

• Silt

What property measures how easily fluids can flow through a material?

• Viscosity

• Permeability

• Porosity

• Density

Which type of grains have more pore space available?

• Small grains

• Poorly sorted grains

• Well sorted grains

• Large grains

Why does high porosity not always indicate high permeability?

• Because the spaces are too large

• Because the spaces are small and isolated

• Because the material is too dense

• Because the material is too soft

What is an aquifer?

• A reservoir saturated with water and has permeability to allow water flow

• A type of rock with high density

• A reservoir saturated with oil

• A type of rock with low permeability

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

Which materials make good aquifers?

• Clay and silt

• Sand, gravel, and sandstone

• Shale and hydrate

• Salt and clay

Tags

NGSS.MS-ESS3-1

What is a cap rock?

• A rock with high permeability

• A rock with very low permeability to prevent fluid movement

• A rock with high porosity

• A rock used to store water

What are common cap rocks?

• Shale, hydrate, and salt

• Sandstone and limestone

• Gravel and sand

• Silt and clay

What is necessary for an underground storage reservoir?

• High porosity and low permeability

• Enough space to store the fluid and enough connectedness for the fluid to move

• High density and low porosity

• Low permeability and high viscosity

Tags

NGSS.MS-ESS3-1