How
4.5 Billion Years Old is the age of this...
What is earth?
Underwater volcanoes created this type of rock.
What is granite?
This is the name of the first supercontinent.
What is Rodinia?
Because the ocenas are covered in ice, this begins to happen...
What is a massive extinction of ocean life?
Earth was made from these things colliding together.
What are meteors?
These organisms may be responsible for the production of oxygen.
What are stromatolites?
Snowball Earth is triggered by....
What is the massive continent blocking heat from the poles. This caused the ocean to start to freeze. The snow began to reflect the sun light causing more of the ocean to freeze.
• The land begins to freeze which reflects the sun’s light away from the planet
o It is called SNOWBALL EARTH because, eventually, the entire Earth was
covered with a sheet of ice and resembled a snowball.
Snowball earth ends when this happens...
What is volcanoes create a greenhouse effect?
After the collisions, the earth first forms as a....
molten lava planet.
Plate tectonics is the study of?
What is the movement of Earth's plates and the continents?
What are trilobites?
What is the Cambrian Explosion?
This substance, which makes life possible, began to form on the surface around 4.4 billion years ago.
What is water?
The ocean begins to look blue because of an increase of this element?
What is oxygen?
Our ancestors spread out across the globe, starting in which continent?
What is Africa?
We know how the dinosaurs went extinct because of this....
What is the tombstone layer?
Because surface rocks began emitting CO2, the skies appeared like this...
What is blue?
This rock material is what makes up the continental plates. It floats on this type of rock which makes up the ocean floor. (Both types.)
What is granite which floats on basalt?
This began about 2 million years ago.
What is the Ice Age?
These creatures began to flourish once the dinosaurs were extinct.
What are mammals?