Unit 4--Geologic Time Review

In what type of rocks are fossils found?

• sedimentary rocks

• metamorphic rocks

• volcanic rocks

• igneous rocks

Which of the following best explains the principle of uniformitarianism?

• the present is the key to the past

• older layers are found below younger layers

• sediment deposits horizontally

• the times, they are changing

According to the principle of cross-cutting relationships, an intrusive rock body is

• always made of the same materials as rock around it.

• younger than the rocks into which it intrudes.

• deposited as sedimentary layers.

• older than the rocks into which it intrudes.

Tags

NGSS.MS-ESS1-4

The principle that explains that sediment is generally laid down in flat, horizontal layers is called...

• Principle of original horizontality

• Principle of fossil succession

• Principle of cross-cutting relationships

• Law of Superposition

What type of dating process would be used to determine which rock layer is older or younger than another?

• numerical dating

• radiometric dating

• absolute dating

• relative dating

Tags

NGSS.MS-ESS1-4

In general, the law of superposition states that in an undeformed sequence of sedimentary rocks, each layer is

• older than the one above it

• younger than the one above it

• older than the one below it

• basically the same age

Tags

NGSS.MS-ESS1-4

Which principle states that when small pieces of rock are embedded in another type of rock, the small pieces of rock indicate the older rock layer?

• Principle of inclusions

• Principle of original horizontality

• Principle of fossil succession

• Principle of cross-cutting relationships

Look at the diagram. Which of the following choices is the youngest feature?

• fault M

• igneous intrusion L

• rock layer A

• rock layer J

Tags

NGSS.MS-ESS1-4

What type of unconformity consists of tilted sedimentary rocks that are overlain by younger, more flat-lying sedimentary rocks?

• disconformity

• nonconformity

• angular unconformity

• conformity

Tags

NGSS.MS-ESS1-4

A gap in the rock record where only weathering and erosion occurred is known as...

• an unconformity

• an adaptation

• an intrusion

• an inclusion

Tags

NGSS.MS-ESS1-4