ACA Earth Science A unit 2 quiz rocks

What evidence can we use to determine a newer rock layer?

• It is horizontally-oriented.

• it will be the bottom layer

• it will not be flat

• it will cut through the other layers

check the 3 options that are methods of relative dating of rocks.

• faunal succession

• horizontal relationships

• original angularity

• superposition

• cross-cutting relationships

Choose two items that the Earth's layers are defined by.

• by their physical properties

• by their proximities to the core

• by their amounts of land area

• by their chemical compositions

• by their asthenospheres

Which Earth Layer and Atmospheric layer have the same chemical composition.

• inner core

• mesosphere?

• outer core

• asthenosphere

• lithosphere

Which two things are required for metamorphic rock formation?

• pressure

• compaction

• erosion

• heat

• melting

What two items are required for igneous rock formation?

• pressure

• melting

• erosion

• cooling ( solidification )

• weathering

what two items are required for sedimentary rock formations?

• cementation

• heating

• compaction

• cooling ( solidification )

• pressure

Which letters represent the oldest and the youngest

• G and I

• J and A

• G and H

• H and I

Choose whether this rock demonstrates fracture or cleavage

• Fracture

• Cleavage

What is the difference between fracture and cleavage?

• fracture is rough and irregular, cleavage is a pattern of breaks

• cleavage is rough and irregular, fracture is a pattern of breaks

• cleavage is the chipping of a mineral

• fracture is where a new crystal face is formed