Which of these statements describes a key characteristic of index fossils?

They existed for a short span of time.

They existed in a unique location.

They are present in very small numbers.

They are similar to other fossils.

How was the fossil of this insect formed?

by being trapped in hardened tree sap (amber)

by being buried in sediment that slowly decays

Rocks that form from the bonding of rock fragments such as sand, silt, or clay; from organic materials; and from chemicals dissolved in water.

Rocks that form when other rocks are changed by heat and pressure.

Rocks that form from cooling magma or lava

What is the purpose of the geologic time scale?

to organize the major Era's of Earth's history

to compare very short & very long periods of time

to compare with other non-geologic time scales

to help people understand that planet is really old

What does the picture indicate?

an explosion of different organisms

Mass Extinction / Extinción masiva

Times when MANY species on Earth died or became extinct within a short period of time. / Tiempos en los que MUCHAS especies en la Tierra murieron o se extinguieron en un corto período de tiempo.

The remains or traces of ancient living things. / Los restos o rastros de antiguos seres vivos.

If one geologic feature cuts across another feature, the feature that it cuts across is older. / Si una característica geológica atraviesa otra característica, la característica que atraviesa es más antigua.

If one rock contains pieces of another rock, the rock containing the pieces is younger than the pieces. / Si una roca contiene pedazos de otra roca, la roca que contiene los pedazos es más joven que los pedazos.

Isabella's part in a group project on the history of Earth was researching and presenting on the Precambrian time. Which TWO Phrases best characterize the Precambrian time?

a time that covers 88 percent of Earth's history

a time of great evolutionary change

a time with multiple periods in it

This picture shows 4 rock layers and an intrusion of Basalt (a type of molten rock). When molten rock pushes its way into rock layers already formed, it creates an intrusion. This rock strata indicates that the basaltic intrusion must have happened...

After the limestone was deposited

Before the granite was deposited

Before all 4 layers were formed

This illustration shows rock layers from 3 different locations and fossils the rock layers contain. Which conclusion can be drawn from the information in the illustration?

The Fossil F2 appeared most recently of those shown here

The fossil F3 appeared most recently of those shown here.

The fossil F1 appeared before all the others.

The fossil F4 is the oldest of all the fossils.

What do fossils tell us about the history of the Earth?

All of these statements are true

They can tell us about organisms that have gone extinct

They can tell us about climates and environments of the past

They can show us how species have evolved over time

History of Earth

Authored by Aimee Sanford

Science

6th Grade

NGSS covered

Used 14+ times

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

Age of rock compared to ages of other rocks.

Relative Age

Absolute Age

Radioactive Dating

Radioactive Decay

Tags

NGSS.HS-ESS1-5

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The number of years that have passed since the rock formed.

Relative Age

Absolute Age

Radioactive Dating

Radioactive Decay

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A gap in the geologic record that shows where rock layers have been lost due to erosion

Unconformity

Fossil

Radioactive Dating

Radioactive Decay

Tags

NGSS.MS-ESS1-4

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The preserved remains or traces of an organism that lived in the past.

Unconformity

Fossil

Radioactive Dating

The Law of Superposition

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In undisturbed horizontal sedimentary rock, the oldest is at the bottom and the newest the top.

Unconformity

The Law of Superposition

Radioactive Dating

Radioactive Decay

Tags

NGSS.MS-ESS1-4

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A record of the geologic events and the evolution of life forms as shown in the rock and fossil record.

Geologic Time Scale

Era

Period

Index Fossil

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Geologists divide the time between the Precambrian and the present into 3 long units of time called..

Geologic Time Scale

Eras

Period

Index Fossil

Tags

NGSS.MS-ESS1-4

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History of Earth

Age of rock compared to ages of other rocks.

The number of years that have passed since the rock formed.

A gap in the geologic record that shows where rock layers have been lost due to erosion

The preserved remains or traces of an organism that lived in the past.

In undisturbed horizontal sedimentary rock, the oldest is at the bottom and the newest the top.

A record of the geologic events and the evolution of life forms as shown in the rock and fossil record.

Geologists divide the time between the Precambrian and the present into 3 long units of time called..

Eras are subdivided into units of geologic time called...

fossil that is useful for dating and correlating the rock layer in which it was found.

A vertebrate whose body temperature is determined by the temperature of its environment, and that lives it's early life in water and it's adult life on land

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