3.2: Sedimentary Rocks

Rock made of layers of compressed sediments are called __________.

• metamorphic rock
• igneous rock
• sedimentary rock
• school house rock

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

Sediment moving through rivers and depositing in the ocean can form layers over time. These layers can also be called ______________.

• igneous rocks

• metamorphic rocks

• sedimentary rocks

• sand dunes

Tags

NGSS.MS-ESS2-3

Sedimentary rocks form in

• crystal shapes.

• a large mixture of different sediments.

• layers of sediments stacked on top of each other.

Organise the steps of formation of sedimentary rocks from start to finish.

• Weathering

• Erosion

• Deposition

• Compaction

• Cementation

Tags

NGSS.MS-ESS2-4

What kind of fossil is this?

• trace fossil

• true form fossil

• cast fossil

• mould fossil

Which picture shows an example of weathering?

• 
• 
• 
• 

Answer explanation

Weathering is the breaking down of rocks

Tags

NGSS.MS-ESS2-2

Which picture shows an example of compaction when making sedimentary rocks?

• 
• 
• 
• 

Answer explanation

Heat and pressure press down and compact the rocks together so that there is less empty space.

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

Which layer is the youngest?

Tags

NGSS.MS-ESS1-4

Which picture shows an example of cementation when making sedimentary rocks?

• 
• 
• 
• 

Answer explanation

Small minerals fill the spaces and cement it together after compaction.

Which picture shows an example of deposition?

• 
• 
• 
• 

Answer explanation

Sediment is deposited at the end of rivers to create deltas. This sediment that is deposited creates underwater layers in the ocean over time.

Tags

NGSS.MS-ESS2-2