Eras of Earth's History

What 2 pieces of evidence is most helpful in understanding events that occurred in Earth’s past?

• Layers of Rock

• Fossils

• The Geologic Time Scale

• Scientific Tools

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

What most limits the study of the previous eons?

• Scientists can't time travel.

• Due to mass extinctions, some species that we could've studied had gone extinct.

• No evidence of previous eons are written down.

• The rock cycle destroys evidence of the previous eons limiting our study of previous eons.

Tags

NGSS.MS-LS4-1

The Earth’s temperature became more even and cooled down. Water vapor formed oceans and the Earth was cool enough to form the first continent, Vaalbara. Oxygen was released into the atmosphere (Great Oxygenation Event) and the first life formed. What eon is this?

• Archean

• Hadean

• Proterozoic

• Phanerozoic

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

What is precambrian time and during which eons did it occur?

• Precambrian time is the earliest parts of Earth's history which preceded the cambrian times. This time period occurred in the first three eons, the Hadean, Archean, and Proterozoic. Precambrian time represents about 80% of Earth’s geologic record.

• Precambrian time is the latest parts of Earth's history which preceded the cambrian times. This time period occurred in the first three eons, the Phanerozoic, Archean, and Proterozoic. Precambrian time represents about 80% of Earth’s geologic record.

• Precambrian time is the earliest parts of Earth's history which preceded the cambrian times. This time period occurred in the first three eons, the Phanerozoic, Archean, and Proterozoic. Precambrian time represents about 80% of Earth’s geologic record.

• Precambrian time is the latest parts of Earth's history which preceded the cambrian times. This time period occurred in the first three eons, the Phanerozoic, Meaterozoic, Winsterozoic. Precambrian time represents about 80% of Earth’s geologic record.

Tags

NGSS.MS-ESS1-4

What was the effect of snowball earth?

• It started the evolution of the first complex animals. The first complex organisms, weird tube- and frond-shaped things called the Ediacarans, appeared soon after.

• It allowed snow angels to be made by complex organisms.

• Hot Chocolate was created because of snowball Earth because it was called and organisms wanted a treat.

• There was no effect.

Tags

NGSS.MS-ESS2-2

NGSS.MS-LS4-1

There was a time period that occurred approximately 716 million years ago and covered the earth completely in ice and created very cold temperatures on earth. What is the scientific name of this event?

• Snowball Earth

• Cold Earth

• Snowball Planet

• Frozen Earth

Tags

NGSS.HS-ESS2-2

NGSS.HS-ESS3-5

What caused Snowball Earth?

• An invasion of snowmen from an outside planet covered the Earth in Snow that took millions of years to melt.

• No Organisms Heaters were working, so everything was cold.

• Earth’s Atmosphere failed to keep the planet warm, causing cold space temperatures to leak into Earth’s surface.

• Snowball Earth was caused by the rapid weathering of Earth’s continents. This sucked carbon dioxide out of the atmosphere leading to major drops of temperature.

Tags

NGSS.MS-ESS2-1

When was the Earth Formed?

• 100 Years Ago

• 4.6 Billion Years Ago

• 2019 Years Ago

• 16.7 Million Years Ago

Tags

NGSS.MS-ESS1-4

What are the 4 Eons in order?

• Hadean, Proterozoic, Archean, Phanerozoic

• Hadean, Archean, Proterozoic, Phanerozoic

• Archean, Hadean, Proterozoic, Present

• Hadean, Archean, Proterozoic, Mealrozoic

Tags

NGSS.MS-ESS1-4

Which era is known as the 'Age of Reptiles'?

• Paleozoic

• Mesozoic

• Cenozoic

• Proterozoic