Study Guide - TCI Planet Earth

What is the law that states the oldest rock layer is at the bottom and the youngest is at the top.

• Law of Cross Cutting

• Law of Superposition

• Law of Orginial Horizontal

Tags

NGSS.MS-ESS1-4

According to the principle of original horizontality, sediment that forms rock layers is deposited in horizontal layers due to gravity. Tectonic forces can cause the horizontal rock layers to fold and tilt. When rock layers are folded, the order of the layers may not always go from bottom to top. Which is oldest A, B, C, or D?

• A

• B

• C

• D

Tags

NGSS.MS-ESS1-4

How does the principle of lateral continuity explain the formation of the two peaks in the image below?

• The oldest is at the bottom, the youngest is at the top!

• The principal states that a rock feature that cuts across another rock feature is the younger of the two features.

• The two peaks are formed by rock of the same age, therefore they must have been formed from the same rock layer. After the rock layer was formed it was eroded away, leaving the two separate peaks.

Tags

NGSS.MS-ESS1-4

What is it called when magma pushes into cracks in rock formations and causes them to widen?

• Faults

• Instrusions

• Strata

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NGSS.MS-ESS2-2

How does the law of cross-cutting relationships explain that the fault in this image is younger than the rock strata through which it passes? Check all that apply!

• The law of cross-cutting relationships states that a rock feature that cuts across another rock feature is the younger of the two features. In the image a fault cuts across several rock strata. The rock strata are the same on either side of the fault, so they were deposited first in horizontal layers. Then the fault separated the layers.

• The fault would be the same age, therefore they must have been formed from the same rock layer. After the rock layer was formed it was eroded away, leaving the two separate peaks.

• Because the fault cuts across the existing rock strata, according to the law of cross cutting relationships, the fault is older than the rock it cuts across.

Tags

NGSS.MS-ESS1-4

Why is an ammonite an index fossil?

• They are widely distributed (found around the world)

• They are found in the ocean

• They existed for a relatively short amount of geologic time.

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

What do we call the extinction of a large number of species over a relatively short period of time? This happened to the dinsosaurs 65-66MA. Scientists believe this was due to an asteroid blocking out the sun and killing off the dinosaurs food source.

• Geologic TIme

• Mass Extinction

• Interglacial Period

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NGSS.MS-LS4-1

We studied the geologic time scale and learned that how our Earth has changed over time. Check below if the event has happened in our Earth's past!

• Ice Age

• Mass Extinction

• Age of Dinosaurs and then Mammals

• Pangea formed and split apart

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

NGSS.MS-ESS2-2

How old is the earth?

TCI Help: Organizing Geologic Time Scientists organize Earth’s 4.6-billion-year history on a geologic time scale. Rock strata reveal major events in Earth’s history.

• Thousands of years old

• Millions of years old

• Billions of years old

Tags

NGSS.MS-ESS1-4

A natural hazard, an event that occurs naturally and can have a negative impact on people. Check all the natural hazards below:

• Earthquakes

• Volcanoes

• Floods

• Tsunami

Tags

NGSS.MS-ESS3-2