8.3

A method of determining the absolute age of an object by comparing the amount of parent isotope vs. daughter isotope and using half-life.

• Absolute Dating

• Radiometric Dating

• Relative Dating

• Prehistoric Dating

Tags

NGSS.HS-PS1-8

Fossils that are used to estimate the absolute age of the rock layers in which they are found. These organisms must have lived during a short time span, have unique features, and be common over large areas.

• Fossil Record

• Index Fossil

• Geologic Column

• Absolute Dating

A principle that geologic processes that occurred in the past can be explained by current geologic processes.

• Uniformitarianism

• Catastrophism

• Law of Crosscutting

• Law of Superposition

List the steps of the scientific method

d

e

f

c

b

a

Communicate results

Analyze results

Draw conclusions

Ask a question

Conduct experiment

Form a hypothesis

Tags

NGSS.MS-PS2-2

Faults or intrusions are younger than any layer of rock they cut through.

• Uniformitarianism

• Catastrophism

• Law of Crosscutting

• Law of Superposition

The trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock.

• Climate

• Ice Core

• Fossil Record

• Fossil

Tags

NGSS.MS-LS4-1

A long cylinder of ice obtained from drilling through ice caps or ice sheets; used to study past climates.

• Ice Core

• Sea Floor Sediments

• Tree Rings

• Climate

Tags

NGSS.HS-ESS1-6

NGSS.HS-ESS3-5

An ordered arrangement of rock layers that is based on the relative ages of the rocks (older rocks are at the bottom).

• Geologic Column

• Fossil Record

• Law of Superposition

• Relative Dating

Tags

NGSS.MS-ESS1-4

The time required for half of a sample of a radioactive isotope to break down by radioactive decay to form a daughter isotope.

• Geology

• Geologic Time Scale

• Half-Life

• Radiometric Dating

Tags

NGSS.HS-PS1-8

When two objects of different temperatures come into contact, heat is always transferred; select all the correct directions of transfer listed. Select ALL that apply.

• fire heat transfers to metal rod

• hat transfers heat to the snowman

• glass of warm water transfers heat to the ice cube

• ice transfers heat to the pop cans in a bucket

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4