Geography Quiz questions and answers – Flashcards

1) they disagree about how long ago the big bang occurred: some claim 8-10 billion years ago and others claim 10-15 billion years ago.

They disagree about how much space all the matter in the universe took up prior to the explosion, Some claim a pinhead others claim an atom (remember all matter is made up of an atom all atoms are made up of energy)

At one time all of todays continents were fused together in one super continent called Pangea. Over a hundred million years ago it began splitting along the mid atlantic ridge, one of the cracks that divide the earths crust into the puzzle pieces that float upon the underlaying layer of lava. the middle atlantic ridge sits in the middle of the atlantic ocean, still pushing the americas and Africa apart. Some believe that the giant asteroid that hit near Mexico and caused the extinction of the dinosaurs sent a shock wave that sent the island of india crashing into china, creating the himalayas

1) Dinosaurs: Giant asteroid that triggered massive volcanic activity on opposite sides of the earth, blocking the sun. 2) various species: dramatic climate changes and resulting ice ages 3) Neanderthals: They couldn't compete with homo sapiens, whose language skills enabled them to hog all of the natural resources.

Climate: Humans couldn't leave the warmth of Africa until they learned how to make fire. The last ice age made the bering strait crossable by glacier/land; scarce food encouraged human movement over the land bridge into America.