How did dinosaurs become extinct

I was hanging out with my friends, and we were discussing how the world would end in 2012. While we were pondering our own demiss, we wondered how the dinosaurs became extinct. So that is my question, how did the dinosaurs become extinct?

They ran out of food supplies and died of hunger.

The Earth got hit by a huge Meteorite millions of years ago. and you know the result.

[font=Courier New]Climate Change combined with food shortage. [/font]

An extremely large meteorite crashed into the earth and raised a crazy amount of dust and other such things into the atmosphere, which blocked out sunlight causing Earth to go into an Ice Age.

The meteor was about 10 km in size, making it about 6 miles in diameter. Sucker hit the earth with the force of an angry god (i.e. about 100 million megatons).

If I remember another fairly accepted theory besides the meteorite is a massive eruption from  a (or a group of) super volcanoes which essentially had the same effects as the meteorite theory. 

That is true. Many scientists believe that a super volcano, like the one in Yellowstone, may have had a role in whiping out the dinos. However, I'm more inclined to believe the meteor theory after I read about the crater found in Mexico a couple of years ago.

http://www.universetoday.com/36697/the-asteroid-that-killed-the-dinosaurs/

As the bible would teach you:

I still prefer Scientific Theory...

Basically when the dinosaurs were chilling and eating other smaller animals a giant rock (meteor) crashed down on the Earth causing a massive shockwave which killed a ton of them. At this point the remaining survivors were slowly dissipated by the food shortage.. Then the Ice age came and screwed them more.

And that is exactly how it went down.

/facepalm.

Do you really think that one meteor would enough to kill a ton of dinosaurs? If that was true, we would've found a mark that big. Also, the dinosaurs have already died out by the time of the "Ice Age", or the Plesitocene epoch. Dinosaurs went extinct at the end of the Cretaceous period, which is roughly 65 million years ago. The ice age started around 2.5 million years ago. The Ice Age is commonly misunderstood as a time when the Earth cooled down. While this is true, it's most defining factor is global glaciation.

Next time, I ask that you do a little bit of research before posting.

I killed them![color=white]┌∩┐(◣_◢)┌∩┐[/color]

but seriously,


i heard some where that the gulf of mexico is a crater. is that big enough for you?

also: 10-greatest-major-impact-craters-on-earth

I'm sorry, is a 100 million megaton explosion not good enough for you? Okay, how about we toss in Turok, some Daleks, Predators, and the all mighty power of Cthulhu? Would that rake in a high enough dinosaur kill count for ya?

Edit: Forgot the rampaging horde of killbots.

How about meteors AND God?

As was said earlier in this thread, we HAVE found a mark that big, in Mexico. The fact that the dinosaurs extinction happen very quick makes the scientists believe that the massive meteor caused an heatwave that killed lots of dinosaurs, but also threw up loads of dust in the air (with the help of volcanoes erupting from the shock wave of the meteor) leading to a long and world wide cooling of the earth (which is not the same as an Ice Age with glaciers covering the entire world), something that the cold-blooded dinosaurs could not adapt to.

What was it now you said about research...

Besides the fact that there ARE craters that big on earth, ie gulf of mexico being the most probable, the impact would not just cause a large earthquake and such. It would have throw up dust and such into the sky. It would have greatly increased the temperature. It would have caused abnormal activity such as increased volcanic eruptions and such due to plate instability.

So yeah, it would be enough to wipe out the majority of dinosaurs. Maybe not all of them, but pretty much all of the larger ones and many of the smaller ones would have lost out to mammals and the like.

edit: Well shit, Ethil beat me.

There we go haha although there are a lot of theories surrounding this big event (such as the creation of the universe) scientists believe that a single meteor (one so big that we haven't encountered as of now) was able to kill most of them because if you look at Mexico there is a big crater and a lot of dinosaur bones have been excavated there haha although I do admit that I made a mistake with the Ice Age bit...

Yeah, I even posted the link to an article that gives out a lot of info about said meteor and crater.

http://www.universetoday.com/36697/the-asteroid-that-killed-the-dinosaurs/