Daily Warm-Up Exercises1 Day 12 How can sand being carried by a river eventually become sandstone? When the river slows, the sand settles and forms a layer

Daily Warm-Up Exercises 1

Day 12

How can sand being carried by a river eventually become sandstone?

When the river slows, the sand settles and forms a layer. Over time, new layers of sand continue to form, pressing down on older layers beneath them. The pressure squeezes the grains of sand tightly together, and a cementing agent helps hold the grains together.

Compare Rock Formation, Part 2 2

Compare Rock Formation, Part 2

Contrasting Case Activity 3Earth History, Investigation 4


Igneous Rock Formation

How do igneous rocks form?Igneous rocks form when molten rock cools and hardens.

How can you show the formation of igneous rock on the Rock Cycle diagram?

Igneous Rock Metamorphic Rock

molten rock sediments

Sedimentary Rock


The Rock Cycle

cools & hardens


Molten Rock FormationWhat is molten rock?

Molten rock is melted rock.

How can rock melt?Rock melts when it is exposed to the extreme heat found deep underground.

What type(s) of rock can melt?All three types.

How can you show this on the diagram?


The Rock Cycle

melts due to extreme heat

cools & hardens



Sedimentary Rock


Metamorphic Rock Formation

How does a metamorphic rock form?A metamorphic rock forms when an existing rock changes due to heat and/or pressure.

What type(s) of rock can change to form a metamorphic rock?

All three types.



The Rock CycleThe Rock Cycle


cools & hardens

changes due to heat &/or

pressureIgneous Rock Metamorphic Rock


Sedimentary Rock


Grain FormationWhere does the sand in sandstone come from?

Existing rocks break apart into small particles to form sand, silt, and other sediments.

What natural processes could break rocks into small particles?

Physical weathering, like ice wedging, abrasion, plant growth, and thermal breakage. Also chemical weathering, like when water & acids dissolve minerals


Sediment FormationOnce the sediments are formed, how do they pile up?

Through erosion, transport, and deposition.

What type(s) of rock can weather, erode, move and settle?

All three types.



The Rock Cycle



Sedimentary Rock

weathers, erodes, moves

& settles


cools & hardens


pressure


Sedimentary Rock Formation

Once the layers of sediment build up, two processes change the sediments into a rock. What is the first process?

New layers press down on old layers, compacting the particles together.

What is the second process?A cementing agent helps hold the particles together.



The Rock Cycle

get compacted &

cemented together


& settles


cools & hardens


pressureIgneous Rock Metamorphic Rock


Sedimentary Rock

get compacted &

cemented together


cools & hardens


pressure


The Rock Cycle



Sedimentary Rock


& settles

How are rocks broken down?• Weathering

– Physical and chemical processes– Rocks are broken down

• Erosion– Rock pieces are picked up by wind or water

• Transportation– Rock pieces are moved

• Deposition– Sediments are stop moving and settle in one place


Rock Cycle Definition

• A series of processes that cause rocks to change from one type to another.

• Processes like weathering, erosion, transportation, deposition, compaction, cementation, melting, cooling, heat and pressure


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Daily Warm-Up Exercises1 Day 12 How can sand being carried by a river eventually become sandstone? When the river slows, the sand settles and forms a layer