Minerals & Rock Cycle

Metamorphic rock is changed into igneous rock by

• weathering and erosion.

• sedimentation and lithification.

• heat, pressure, and chemical activity.

• melting followed by cooling and solidification.

Tags

NGSS.MS-ESS2-1

Which of these BEST describes the concept of the rock cycle?

• sedimentary rocks may be remelted several times

• rocks move in circles on the earth as the earth rotates

• rocks can be moved from place to place on the earth without changing

• rocks are continually changing, and any type of rock may be

  transformed into another type by appropriate processes

Tags

NGSS.MS-ESS2-1

Jennifer was investigating granite, a type of rock that forms when magma deep below the Earth's crust cools off and hardens. What type of rock is granite?

• bedrock

• igneous rock

• sedimentary rock

• metamorphic rock

Which mineral in this table is the hardest?

• Calcite

• Feldspar

• Fluorite

• Talc

Which types of rocks are LEAST likely to break?

• Rocks found underground

• Rocks that contain fossils

• Rocks that have many colors in them

• Rocks that are difficult to scratch

Based on these three properties, the mineral is MOST LIKELY

• calcite.

• feldspar.

• gypsum.

• quartz.

Describe how a metamorphic rock might become a sedimentary rock over time.

• Metamorphic rock melts, cools, and undergoes recrystallization.

• Metamorphic rock is intruded by igneous rock and it melts, cools, and becomes solid again.

• Metamorphic rock undergoes weathering, erosion; the particles are deposited and undergo lithification.

• Metamorphic rock is buried deep in the Earth. It undergoes recrystallization and is then uplifted to the surface.

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

Which best describes the formation of metamorphic rock?

• They are formed through the cooling and hardening of magma or lava, both below Earth's surface or on Earth's surface as volcanic rocks.

• They are formed by deposited sediment, usually at the bottom of lakes and oceans, that is compressed over time into solid layers of rock.

• They are formed as extreme weather elements, like tornadoes and floods, break down mountains and other rock landforms into smaller pieces.

• They can be formed from any of the three rock types, withstanding high temperatures and pressures, and forming new minerals without melting.

Rocks, as they are compressed, begin forming mountains above the Earth's surface when two continental plates converge. The continental crust increases in depth as the mountains grow above. The Himalayan Mountains formed at a convergent plate boundary in this manner. The rocks are smashed together causing them to __________ due to the intense heat and pressure from the colliding plates and eventually forming _____________ rock.

• melt; igneous

• layer; sedimentary

• recrystallize; metamorphic

• melt into the Earth's interior; metamorphic

Tags

NGSS.MS-ESS2-2

This is a characteristic of minerals. It describes the mineral's resistance to fractures or scratches.

• Streak

• Fracture

• Luster

• Hardness