geography Flashcards
how did the universe begin
The big bang
what is the big bang
the big bang says that at the start there was nothing and then there was a big bang which created many tiny particles.
when was the big bang
13.8 billion years ago
what was there before the big bang
Nothing
WAS the big bang quick or slow
Quick
Was the big bang loud or quiet
Quiet
Is the big bang a theory or a fact
Theory
After the big bang and the particles and oceans came, what happened?
A meteorite landed in the oceans making the first living cells.
What is evolution?
The process of change slowly over time to improve survival.
What is extinction
When a species dies out because it couldn’t adapt and change.
What is mass extinction?
When many spieces die out at the same time.
Name one animal that has adapted and evolved
Sabre toothed tiger- tiger
Giant elk-elk/moose
Wooly rhino-rhino
Woolly mammoths-elephants
Cave bear-grizzly bear
What is the geological timescale?
The geological timescale is a scale from the start of time to now, divided into eons, eras and periods.
