Precambrian Test

1.

1 point

When did life begin to exist?

5 billion years ago

19 million years ago

100 million years ago

3.5 billion years ago

2.

1 point

Who created a Primordial Soup simulation to prove that certain gases with electricity could have started life on Earth?

Thomas Eddison

Sir Issac Newton

Charles Darwin

Miller & Urey

3.

1 point

How are rocks useful?

They are essential in the creation of earth's organisms

They helped heat the Earth

They helped create water on Earth

To find evidence of life on Earth and other planets

4.

1 point

North America the Precambrian shield is called?

Canadian Shield

Northern Shield

Continental Shield

US Shield

5.

1 point

What are the two gases that dominated the Earth but Earth's gravity was not strong enough to keep theses gases?

Hydorgen & Helium

Ammonia & Methane

Nitrogen & Carbon dioxide

Argon & Cyanide

6.

1 point

What Occured during the time of Rodinia?

Earth’s oceans and atmosphere were formed

Pangea was made

Dinosours roamed the Earth

Earth began to spin on its axis

7.

1 point

Since orogens have long ago eroded what did the continents later form?

Microcontinents

Laurentia

Precambrian shield

Pangea

8.

1 point

What gases were present in the atmosphere that could have triggered the beginning of life?

Methan & Ammonia

Cyanide & Sulfur

Argon & Carbon Dioxide

Hydrogen & Helium

9.

1 point

What are Microcontinents responsible for?

they are the 7 continents we have today

Creating the Precambrian shield

They are responsibe for the islands we have today

They helped break the Precambrian shield

10.

1 point

When the primordial soup simulation was conduction what was their evidence to prove that this could have started life on Earth?

There was a substance containing amino acids

the soup made atoms

Cells were created in the substance

The soup created cyanobacteria

11.

1 point

Whare are places where they collided and fused together?

islands

Orogens

Microcontinents

Zircon

12.

1 point

There are rocks that are about 3.5 billion years old that have chlorophyll containing bacteria called?

Archaea

Amoeba

Cyanobacteria

Eubacteria

13.

1 point

The process by which a planet becomes internally zoned when heavy materials sink toward its center and lighter materials accumulate near its surface

Divination

Circumduction

Differentiation

Assimilation

14.

1 point

What are Amino Acids?

parts that make up DNA

parts of RNA

building blocks of proteins

they are the waste produce of Cyanobacteria

15.

3 points

What were the 3 sources of Earth's heat?

Sun

Magma

Collision of meteorites

Radioactive isotopes

Gravitational contraction

16.

1 point

What are Ediacra Fauna?

Are organisms that feed on Cyanobacteria

Soft bodied organims that looked like jellyfish, sea pens, and segmented worms that lived before glaciation occured

Are the distan relative of Cyanobacteria

Are organisms that lived during the Precambrian Era that also live today

17.

1 point

What was responsible for oxygen being present during the Precambrian Era?

The oxygen produced from plants

Cyanobacteria

The Oxygen that is in water evaporated and made air

Volcanism

18.

1 point

What is Zircon?

rock responsible for our first continent

is a very stable mineral that commonly occurs in small amounts in granite

a mineral that made metamorphic rock

the first igneuos rock

19.

1 point

Volcanism released gasses which formed the Earth's Atmosphere by a process called?

Stratification

Outgassing

Gasstration

Volcanation

20.

1 point

What are Eukaryotes?

Cells that have a nucleus

Molecule that makes DNA

cels that do not have a nucleus

Molecule that makes RNA

21.

1 point

Large amounts of cyanobacteria are called?

Oxidative prokaryotes

Cyanoculture

Stromatolites

Parasites

22.

1 point

What is the Role of RNA

it is need for Cyanobacteria to do photosynthesis

it is the genetic information that makes DNA

It is the main molecule created in the primordial soup

Is has the code to use amino acids to make proteins

23.

1 point

When Laurentia collided with other microcontinents what did it eventually become?

New Laurentia

Teckla

North America

Rondinia

24.

1 point

How old is Earth?

2.5 billion years old

4.6 billion years old

3.8 billion years old

5 million years old

25.

1 point

How much of Laurentia is left in North America today?

75%

none it was all recycled

50%

All of it that why we have land today

26.

1 point

What are prokaryotes?

molecules used to make DNA

Cell that has no nucleus

Molecules to make RNA

Cell that has a nucleus

27.

1 point

How did Earth form its layers?

The sun and moon pulled on other elements in the magma causing it to layer

Due to the different densiteis of the magma

By orographic collisions

When rocks collided they became the inner most layers and the outer layers came later when more rocks collided.

28.

1 point

The first 4 billion years most life forms were...

Aquatic creatures

Single-celled organisms

Dinosours

amphibians

29.

1 point

How long ago was it when earth first had land?

10 million years ago

2.5 billion years ago

5 million years ago

3 billion years ago

30.

1 point

Due to volcanism during the Archean Era the atmosphere was rich in what?

Oxygen

Hydrogen

Water Vapor

Helium

31.

1 point

What else did Cyanobacteria contribute to due to photosynthesis?

Ozone

Amino Acids

Proteins

Plant life

32.

1 point

How do scientist know that there was no oxygen present during the Archean Era?

iron oxides turn red in the presence of oxygen and the rocks found in this era were not red.

The organisms were whiped out due to comets and asteroid hitting Earth that life ceased to exist during the Archean Era.

They actually did find oxygen during this time frame but the Earth was too hot to have life at that time.

They found fossils of organisms that made energy without the use of oxygen.

33.

1 point

What is the Precambrian shield made of?

Archean and Proterozoic rock

Zirconic rock

Igneous like sediments

Fossilitic rock