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Review of Earth History

Review of Earth History

Assessment

Presentation

Science

9th Grade

Practice Problem

Medium

NGSS
HS-PS1-8, MS-LS4-1, HS-ESS1-5

+4

Standards-aligned

Created by

Zarraz LEE

Used 37+ times

FREE Resource

8 Slides • 8 Questions

1

Review of Earth History


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2

Multiple Choice

Based on current scientific evidence, how old is the Earth?

1

6,000 years old

2

460 million years old

3

4.6 billion years old

4

46 billion years old

3

Evidence

How does scientists know the age of Earth?

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4

Multiple Choice

When an unstable element like uranium turns into a more stable element like thorium, it is called:

1

plate drifting.

2

transformation.

3

a chemical reaction.

4

radioactive decay.

5

Multiple Choice

The amount of time it takes for 50% of a sample of a radioactive element to decay is called its:

1

decay rate.

2

half-life.

3

half-blood.

4

lifespan.

6

Multiple Choice

The geological time scale is divided into units of time scale. Which is the correct order in descending duration?

1

period, era, epoch, eon

2

eon, era, period, epoch

3

eon, epoch, era, period

4

epoch, period, era, eon

7

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First life on Earth

8

Stromatolites

layered rocks, lithified remnants of microbial communities with or without active microbes

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9

Multiple Choice

Question image

What type of fossil is this?

1

Mold

2

Cast

3

Trace

4

Preserved

10

Multiple Choice

Question image

What type of fossil is this?

1

Mold

2

Cast

3

Trace

4

Preserved

11

Multiple Choice

Where would paleontologists more likely to find fossils?

1

Igneous rocks

2

Sedimentary rocks

3

Metamorphic rocks

12

Used along with

  • radioisotope dating

  • stratigraphy

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13

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Oxygenic Earth

14

Poll

"Appearance of oxygen in the atmosphere". Is this an evidence?

Yes

No

15

Evidence of oxygen in the atmosphere

  • Iron ore (FexOy) in

  • Sulfate (SO42-) in ocean sediments

  • Cyanobacteria

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16

EVIDENCE

a sign or indication (object, date) to prove that something (an event) is or is not true

Review of Earth History


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