earth and environmental science 7.1 study guide
DESCRIPTION
Age of the earth, Precambrian, Mesozoic, Triassic, Jurassic, origin of life, extinction primordialTRANSCRIPT
Earth and Environmental ScienceModule Seven
STUDY GUIDE
PICTURES ADDED BY
KELLA RANDOLPH, M.ED.
BING ONLINE IMAGES
How old is the Earth?
How old is the Earth?
4.55 billion years
Describe the conditions of the Earth in the beginning.
Describe the conditions of the Earth in the beginning.
Hot molten surface with no atmosphere.
How did the moon form?
How did the moon form?
An asteroid the size of Mars hit the Earth and gauged out a chunk that became our moon.
Name the 4 geological eras.
Name the 4 geological eras.
Precambrian, Paleozoic, Mesozoic and Cenozoic
Which era lasted the longest?
Which era lasted the longest?
Precambrian
In which era did life appear?
In which era did life appear?
Precambrian
What was the name of the first life form?
What was the name of the first life form?
Cyanobacteria
What special characteristic did this life form have that improved the atmosphere?
What special characteristic did this life form have that improved the atmosphere?
They could photosynthesize
Which era is known as “the age of ancient life”?
Which era is known as “the age of ancient life”?
Paleozoic
How long ago did plants evolve?
How long ago did plants evolve?
400 million years ago
Where did our fossil fuels come from?
Where did our fossil fuels come from?
The remains of ancient plants and animals
In what era were mountains formed?
In what era were mountains formed?
Paleozoic
When Pangaea formed, what type of extinction occurred?
When Pangaea formed, what type of extinction occurred?
90% of all marine animals became extinct.
In what period did dinosaurs and mammals appear?
In what period did dinosaurs and mammals appear?
Triassic
In what period did the Rocky Mountains form?
In what period did the Rocky Mountains form?
Jurassic
How long ago did the Cenozoic period arise?
How long ago did the Cenozoic period arise?
65 million years ago
How did the Great Lakes form?
How did the Great Lakes form?
Melting ice from glaciers.
How long has there been a recorded human history?
How long has there been a recorded human history?
5000 years.
Name 2 pieces of evidence that adds to the geological time scale.
Name 2 pieces of evidence that adds to the geological time scale.
Fossils and radiometric dating.
How long ago was Grandfather Mountain formed?
How long ago was Grandfather Mountain formed?
750-550 million years ago
Explain what Dr. Riggs discovered through his research of the outer banks.
Explain what Dr. Riggs discovered through his research of the outer banks.
He found that they were formed about 12,000 years ago and have experienced many disappearances and reformations.
What is the current human population?
What is the current human population?
7 billion
Explain how the human population rise is impacting the Earth.
Explain how the human population rise is impacting the Earth.
It is putting stress on Earth’s resources. Earth has a finite amount of resources such as clean water. More people equal less resources.