PLEASE HELP GIVING A TON OF POINTS You are going to design a clock to represent the different geologic eons throughout Earth's history.

- Research how long each eon lasted.

-Knowing that each hour of the clock is about 375 million years, determine how many hours each eon takes up on our 12-hour clock.

For example, if an eon took 750 million years, that would take up two hours of the clock.

-Within each eon, identify major events and the types of life that dominated the earth during that time. How you design your clock is up to you.

You can use a computer program to design your Clock of Eons or you can go old school and use poster board and markers.

I'm not sure on how to help with most of those, however I can try my best with a few parts.

The Hadean Eon

The first Eon of Time is the Hadean Eon. The Hadean Eon is the oldest interval of Time and is dated from 4,600 Million Years Ago to 3,900 Million Years Ago. No rock record dating from the Hadean Eon is known on Earth with the exception of the 3.96 Billion Year old rocks found in Canada's Northwest Territories. Although, rocks on other planets in the Solar System were possibly deposited during the Hadean Eon. Earth's earliest known life forms are found in rocks dating from the Archean Eon.

Lasted around about 700 million years

The Archean Eon

The oldest rocks known on Earth were deposited during the  Archean Eon which is dated from 3,900 Million Years Ago to 2,500 Million Years Ago. The Archean Eon is also referred to as the Archaeozoic Eon. Sedimentary rock deposited in the oceans during the Archean Eon contains microscopic life-forms that have bacterial characteristics. These organisms were  among the only living things on Earth for over one billion years. Stromatolites, formed by colonies of photosynthesizing bacteria known as cyanobacteria (blue-green algae) lived in shallow waters. In the Archean Eon, Earth's atmosphere was composed of methane, ammonia, hydrogen, and carbon monoxide, which would be unbreathable by living organisms today. The extensive colonies of photosynthesizing cyanobacteria released oxygen into the atmosphere, beginning a process that eventually resulted in a breathable atmosphere and impacted living things in future Eons.  The climate and weather in the Archean Eon were very hot and wet. The oceans were also very warm. Extensive worldwide volcanic eruptions ejected volcanic ash and dust into the atmosphere causing violent lightning storms and continual rain.

Lasted around 1.5 billion years (I'm unsure about this one)

The Proterozoic Eon

Rocks deposited during the Proterozoic Eon include evidence of multicelled organisms. The Proterozoic Eon was from 2,500 Million Years Ago to 540 Million Years Ago. The stromatolites remained common in the shallow waters of the Proterozoic Eon oceans, however, many other living things were present such as archaea that lived in extreme habitats where the water was very hot and extremely salty.  By the end of the Proterozoic Eon, eukaryotes, cells that have a nucleus, appeared and were the ancestors of all modern living things. One of the first extinctions occurred in the Proterozoic Eon when oxygen accumulated in the atmosphere and caused those bacteria that required the atmospheric conditions of the Archean Eon to die. The Proterozoic Eon also experienced two ice ages, when polar ice became at least a kilometer deep and covered an area extending to the equator.

Lasted around 1.9 billion years

The Phanerozoic Eon

The Phanerozoic Eon began 540 Million Years Ago and continues into the Present. The Rocks deposited during the Phanerozoic Eon contain evidence of fossilized hard body parts of modern living things.

Still ongoing

its b

explanation:

there is no change

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