How did the Grand Canyon form 6 million years ago?

uplift of North America and erosion by the Colorado River

What are stromatolites?

mounds of cyanobacteria and limestone

The Matterhorn is a great evidence of plate tectonics because the Matterhorn is...

a piece of Africa on top of Europe

Why did the Cambrian ocean animals develop bones, shells, eyes and teeth, 500 mya?

Oxygen chemically weathered granite rock releasing Ca into the water.

What is the evidence that dinosaurs went extinct due to a meteor impact 66 mya?

an iridium clay layer all over the world

a process that makes a ball shape

What is the evidence the first continents were granite?

The oldest rocks on Earth are granite

Evidence that the Earth was made from rocks and metal orbiting the Sun

Meteor Crater Arizona, Meteorites are made of iron.

What caused the Snowball Earth mass extinction 700 mya?

Sunlight reflected off of polar ice., Rodinia blocked the warm ocean from mixing with cold ocean.

How do we know the Earth was a water world 3.5 b.y.a.?

All rocks that are 3.5 b.y. old are pillow basalt.

What melted the meteors from which the Earth was made?

radioactive decay of U, Th, and K

studbud

How The Earth Was Made

14 termsStudBud Administration

This is based on the Film How The Earth Was Made by the History Channel

Flashcards14 cardsFPractice quizPHost liveL

Questions 14

Answers

1
How did the Grand Canyon form 6 million years ago?
From a catastrophic volcanic explosion
Glaciers carved the canyon during the ice ages.
A huge asteroid impacted Arizona.
uplift of North America and erosion by the Colorado River
2
Where did the Earth, the water world, get all its water 3.5 billion years ago?
volcanoes
photosynthesis
meteors
comets
3
What are stromatolites?
mounds of cyanobacteria and limestone
a simple plant that grows on rocks
a type of coral
an ancient tree
4
The Matterhorn is a great evidence of plate tectonics because the Matterhorn is...
A piece of India on top of Asia
a piece of Africa on top of Europe
made of super thick lava
made of ancient granite
5
Why did the Cambrian ocean animals develop bones, shells, eyes and teeth, 500 mya?
the Earth was struck by a huge meteor
Oxygen chemically weathered granite rock releasing Ca into the water.
radioactive decay of U, Th and K
Rodinia blocked the warm ocean from mixing with cold ocean .
6
Strangely enough, too much global warming today may cause…
the next ice age.
another mantle plume eruption.
plate tectonics to stop.
all the forests on Earth to burn at once.
7
What is the evidence that dinosaurs went extinct due to a meteor impact 66 mya?
the banded iron formation in Austrailia
giant coal deposits in Wyoming, England, and in China
an iridium clay layer all over the world
all rocks that are 3.5 b.y. old are pillow lavas
8
What is accretion?
a process that makes a ball shape
When 4H combine making He and energy
when green plants make oxygen and sugar
when O2 reacts with sunlight
9
What is the evidence the first continents were granite?
The ocean floors are made of granite.
The oldest rocks on Earth are basalt.
Granite rocks contain ancient fossils.
The oldest rocks on Earth are granite
10
Evidence that the Earth was made from rocks and metal orbiting the Sun
Meteor Crater Arizona
Huge lava flows
Meteorites are made of iron.
Stromatolites
11
Where did the Earth get the oxygen we breathe 3.0 billion years ago?
ancient trees and land plants
volcanoes on Earth
meteors and comets from space
stromatolites
12
What caused the Snowball Earth mass extinction 700 mya?
Oxygen made granite rock crumbly releasing Ca.
The Earth moved away from the Sun.
Sunlight reflected off of polar ice.
Rodinia blocked the warm ocean from mixing with cold ocean.
13
How do we know the Earth was a water world 3.5 b.y.a.?
All rocks 3.5 b.y. old have fossils in them.
All rocks that are 3.5 b.y. old are pillow basalt.
Ancient carvings told stories of green oceans.
From rust that settled on the ocean floors
14
What melted the meteors from which the Earth was made?
radioactive decay of U, Th, and K
O2 reacting with sunlight
the Sun's strong energy
4H come together making He and energy

How The Earth Was Made Flashcards | StudBud