Metamorphic Rocks Test

What are the three principal agents of metamorphism?

• Heat, differential pressure, and time

• Heat, magma, and sediments

• Heat, differential pressure, and deep-sea smokers

• Heat, pressure, and chemically reactive fluids

What is the role of heat in metamorphism?

• It increases atomic vibrations

• It strips away valence electrons

• It adds catalysts to promote reactions

• It causes minerals to partially melt

Tags

NGSS.HS-ESS2-3

Chemically reactive fluids in metamorphism react with:

• Magmatic water

• Minerals in the protolith

• Groundwater

• Ocean water

Tags

NGSS.HS-ESS2-5

During metamorphism, differential stress on rocks can:

• Cause rocks to partially melt

• Cause mineral crystals to align parallel to each other

• Cause rocks to partially erode

• Cause new minerals to grow randomly in the protolith

Which metamorphic texture describes minerals oriented flat and parallel to each other?

• Nonfoliated

• Lamellar

• Foliated

• Lineated

Which metamorphic rock is characterized by distinct banding of light and dark minerals?

• Gneisses

• Marbles

• Phyllites

• Schists

The protolith of slate is:

• Shale

• Granite

• Limestone

• Sandstone

How can quartzite be distinguished from its protolith sandstone?

• Quartzite fizzes when in contact with acid

• Quartzite breaks across the sand grains instead of between them

• Quartzite has a darker color

• Quartzite is always softer

Which of these generally contains the largest mica grains?

• Shale

• Phyllite

• Slate

• Schist

What does metamorphic grade refer to?

• Different colors of rocks

• The degree/extent of metamorphism

• A measure of the rock composition

• The coarseness or fineness of the grains