Paleozoic era
How long ago was the paleozoic era?
541 million years ago
Dinosaurs existed during the Mesozoic era.True or false?
True
What animals were seen more during the cenozoic era?
Mammals
Most rocks on earth are younger than earth itself.True or False?
True due to process of volcanism,plate tectonics and erosion.
When did the big bang occur?
13.8 billion years ago.
The largest mass extinction was during the paleozoic era.True or false?
false
How long did the Mesozoic era last?
roughly 186 million years ago
How long ago did the Cenozoic era begin?
65.5 million years ago and continuing until
What is radiometric dating?
a method of dating age material things
What does the big bang represent?
The beginning of time,space and also of matter and energy.
How long did the palezoic era last?
252 million years ago
Mesozoic has the largest known extinction.True or false?
True it wiped out 96% of all marines life
The cenozoic era is also referred as ?
The age of the Mammals
Do rocks and natural materials contain elements?
Yes some of which contain unstable atomic nuclei
Earths atmosphere never lacked on oxygen.True or false?
False it did,it was anoxic
In how many periods was this era divided in?
six periods
How many periods does the mesozoic era have?
three periods
What is the second period of the Cenozoic era?
Neogene Period
What is plate tectonics?
Its a scientific theory that shows how major landforms are created as a result of Earths subterranean movements.
Where are oldest rocks known located?
Canadas Hudson bay
Plants and animals began moving from sea to land.True or false?
True
Was the Jurassic period part of the Mesozoic era?
Yes it was it lasted 208 to 146 million years ago
The Cenozoic era was the first major division?
False it was last major division.
The age of earth is inferred by dating solar solar system objects.True or false?
True they use objects like asteroids,meteorites and lunar rocks.
What was the earliest fossil life evidence?
Stromatolites