7th Grade Unit 3 Review

Relative dating is

• the process of using current rock layers to determine what happened long long ago

• the process of determining the approximate age of a rock, fossil, or event

• the process of determining the order in which events in Earth’s history occurred

Tags

NGSS.MS-ESS1-4

Absolute dating is

• the process of coming to a conclusion using guesses and inconclusive data

• the process of determining the approximate age of a rock, fossil, or event

• the process of determining the order in which events in Earth’s history occurred

Tags

NGSS.MS-ESS1-4

An index fossil is

• states that in undisturbed rock layers, the oldest rock is at the bottom and the youngest rock is at the top

• A type of rock formation that you use to determine the age of the surrounding rock strata

• a fossil of an organism that lived over a widespread area for a short period of geologic time and so can be used to date the rock layers in which it occurs

The geologic timescale is

• a model of Earth’s history divided into eons, eras, periods, and epochs

• during an ice age, a time of even cooler temperatures, when large ice sheets advance from the poles toward the equator

• states that the sequence of changes in organisms as recorded by fossils is the same everywhere the fossils are found on Earth

Tags

NGSS.MS-ESS1-4

The interglacial period is

• a short-term fluctuation in temperature lasting only a few years
• during an ice age, a time of even cooler temperatures, when large ice sheets advance from the poles toward the equator

• a geological interval of warmer global average temperature lasting thousands of years

Tags

NGSS.HS-ESS2-1

NGSS.HS-ESS2-2

NGSS.HS-ESS3-5

The glacial period is

• a period of time when the Earth experiences colder temperatures and extensive ice sheets cover large portions of the planet
• a period of time when the Earth experiences no change in temperatures and no ice sheets cover large portions of the planet
• a period of time when the Earth experiences warmer temperatures and extensive ice sheets cover large portions of the planet

Tags

NGSS.MS-ESS2-2

What is an intrusion?

• igneous rock that forms by crystallization of magma slowly cooling below the surface of the Earth

• a fossil of an organism that lived over a widespread area for a short period of geologic time and so can be used to date the rock layers in which it occurs

• Sending a formal request for access

Tags

NGSS.MS-ESS2-1

What is a fault?

• the scientific law stating that matter cannot be created or destroyed

• a break in Earth’s crust where the rocks on either side have moved

• states that in undisturbed rock layers, the oldest rock is at the bottom and the youngest rock is at the top

Tags

NGSS.MS-ESS3-2

What three ways can sediment be eroded and transported?

• Gravity, magnetism, and electricity
• Fire, air, and earth
• Water, wind, and ice

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-4

Organize these options into the right categories

Groups:

(a) Graptolite Fossil

,

(b) Ammonite Fossil

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(c) Foraminifera Fossil

,

(d) Dinosaur fossil

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Tags

NGSS.MS-ESS2-3

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