MODULE 9 -How Layers of Rocks (Stratified Rocks) Are Formed Flashcards

1
Q

three types of rocks

A

Igneous, sedimentary, metamorphic

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2
Q

In what type of rock do most fossils appear?

A

Sedimentary rock

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3
Q

What type of rock is formed when bits of rocks are layered and cemented
together?

A

Sedimentary rock

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4
Q

What type of rock is formed when bits of rocks are layered and cemented
together?

A

Sedimentary rock

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5
Q

Which of the following refers to a series of processes on Earth’s surface and in
the crust and mantle that slowly changes rocks from one kind to another?

A

Rock Cycle

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6
Q

What step in the rock cycle would be required to change an igneous rock into
a sedimentary rock?

A

Weathering, erosion, deposition, compaction and cementation

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7
Q

During what process does layer upon layer of sediment build up, exerting
pressure on the layers below?

A

compaction

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8
Q

What is the moving of sediments from their original position called?

A

erosion

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9
Q

What is the settling out of the sediment called?

A

deposition

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10
Q

What is the process where sediment is glued together when minerals dissolve?

A

cementation

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11
Q

older layers are generally deeper than more recent layers. what law is being described?

A

law of superposition

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12
Q

What is a process that leads to the formation or deposition
of rock layers?

A

metamorphism

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13
Q

What principles states that all rock layers are continuous
until they encounter other solid bodies that block their deposition?

A

Law of Lateral Continuity

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14
Q

Layered rock formed by compaction.

A

sedimentary rock

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15
Q

Limestone is formed from layers of sand, shells and animal remains that have
been compacted together. What type of rock is a limestone?

A

Sedimentary rock

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16
Q

Sedimentary rock

A

Bits of sand and gravel from layers that turn into rock from pressure

17
Q

What type of rock usually contains fossils?

A

Sedimentary rocks.

18
Q

Where do sediments come from?

A

rock weathering produces sediment

19
Q

A sedimentary rock layer in its original position is older than the layer above it and younger than the layers below it. What law is being described?

A

Law of Superposition

20
Q

In a cliff, where are the oldest layers of rocks made of sedimentary rocks are
usually found?

A

At the bottom

21
Q

What are the processes of compaction and cementation
commonly associated with?

A

lithification

22
Q

What causes the formation of rock layers

A

Erosion and weathering

23
Q

An undeformed sedimentary layer is ______than the layer above and _____than
the layer below.

A

older, younger

24
Q

.in most cases sedimentary beds are deposited as horizontal units

A