Tuesday, April 28, 2009

What happened to the dinosaurs?

Scientists have developed many hypotheses about what killed the dinosaurs. One idea whose thread follows several of these hypotheses is that dinosaurs were unable to adapt fast enough to the changes in their environment and became extinct. Go to the Web site "What Killed the Dinosaurs?" to explore these ideas. Identify the two hypotheses that you feel are most believable. Explain how these events change the dinosaurs' ecosystem.

44 comments:

IFREDDY UMASS :D said...

I think that dinosaurs died by the meter showers and volcanic exploitation and when it happened there my have cause new types of gas in the air that the dinosaurs could not take. Also it could have been the ice age that killed the dinosaurs with the hurricane or weather. I think its much a mystery and i belive theres still lie a water dinosaur because they discovery a beast or creater called lockness monster which if it was alive i would think its a dinosaur.

Geneisha Sanders from umass said said...

The hypotheses that i find believable from the scientist is that asteroid damage the dinosaurs life's. When the scientist made this prediction i did believe it because things that come out of the sky would hit the earth and causes damages. The damages are the smoke and the chemicals. The chemicals inside of the asteroid would spread if it hits the ground hard. It would get into the air and it spaces out. When it does that, it gets into the dinosaurs food(plants) and in themselves.

doris UmASs said...

The plant in the atmosphere die because of the sunlight and heat. They said some seeds and roots of the plants had a big chance of surviving from the lightless period. That's how the plants stop growing and died. The plant esters died but the meat eaters didnt die becuase they had meat to eat it was just the plants that didnt survied when they had a big chance to survie them.

Lucas Harvard said...

The plant in the atmosphere die because of the sunlight and heat.The damages are the smoke and the chemicals.When the scientist made this prediction i did believe it because things that come out of the sky would hit the earth and causes damages. That's how the plants stop growing and died.The plant esters died but the meat eaters didnt die becuase they had meat to eat it was just the plants that didnt survied when they had a big chance to survie them.

Chris Harvard said...

i think Dinosaurs still are alive .I just think that there are on a island that was never discovered and they are still here because we still have turtles and lizards.what are turtles and lizards? well turtles and lizards are related to Dinosaurs.

Isaiah Wilkerson Harvard said...

Two hypotheses that I feel that are most believable about what killed dinosaurs is volcanism and ateroid impact. Volcanism is believable because many dinosaurs lived near volcanoes, and volcanoes could of had an affect on dinosaurs. Ancient lava has been found from millions of years ago so it could be a good possibility that volcanism was one of the factors. Asteroid impact is believable because many asteroids have hit the earth and has done many damage. It wouldn't be a surprise if an asteroid impact caused dinosaurs to die. It is very possible.

Alex Harvard said...

65 Million Years Ago: Dinosaurs were carnivorous animals who used to walk the earth as the supreme dominant rulers of this world. Before humans were born. Then later a meteoroid came and hit around the Gulf of Mexico. That was what wiped out all the dinosaurs. There were no buildings or cars or streets neither anything we have today. All their was is a land of grass and other dinosaurs, such as the t-rex. The damages were the smoke and chemicals once the dinosaurs eat the food that the asteroid smoke got into, it will cost the dinosaurs to die out. Now dinosaurs are known as extinct animals.

Alan Maldonado-BC- said...

Two hypotheses that I feel is most believable is Asteroid Impact, and Volcanism. Its is real possible that a Asteroid can impact the earth and the smoke and ash cloud the skies. It can block off the sun. It is possible for Volcanism to kill the dinosaurs because the volcanoes can erupt and the magma that was inside will turn into lava and can can spread all over the area and kill the dinosaurs.

Divine Gonzalez Boston College said...

My hypotheses to what happen to the dinosaurs is that a asteroid impact. I say this for a few reasons.One reason is because of the impact crater was 150 miles faster than a jet airplane.Another reason is because of the lava flows which lasted 500,000 years leading up to the dinosaurs extinction. Plus another reason is because of the fossil record which say different things. Then the sea level also seems to have dropped drastically which put the Cretaceous period.These are reasons to explain why I have chosen that the asteroid impact put the Dinosaurs to extinction.

JEAN JOSEPH BC said...

It is not fair if you are battling mother nature.The hypotheses that I find and believe from the scientist is that asteroid damage the dinosaurs life's is continental drift. The continental drift is when all of the continents start moving away from together.The effect of continental drift is the climate become cooler and dry.When the continental drift happen some of the dinosaurs die from not having lot of food source.Another hypotheses I will believe is a asteroid hit the earth.The effect of the asteroid that hit the earth is when the asteroid hit it lift up gas and dust up to the atmosphere.So for several months there was no sun light so anything is not growing.That is what I think what happen.

R O C H E L ii S [ b c ) said...

One hypotheses I believe did damage to the dinosaur ecosystem would be volcanism. I say volcanism because volcano could have exploded and all that lava could have affect the dinosaur habitat like the grass and tress. The lava could have damage the dinosaur because the lava could have chemicals in which can hurt the dinosaurs skin. Another hypotheses that could have damage the dinosaurs ecosystem would be the asteroid. The asteroid pass though the coast of Yucatan. The asteroid could have hit and the smoke and pieces of the asteroid could have got into the dinosaurs plants and food which could affect the dinosaur.

Dominique Miller *BC* said... said...

The two hypotheses that killed the dinosaurs is the asteroid. One reason why is because the earth got damaged by a lot of things in the past and now.Another things that happen was that the dinosaurs lost their home and they didn't have no place to sleep and eat. This made the dinosaurs have a bad life and they couldn't live in a peaceful way because they will being chased by plainly eruptions that had appeared.The second thing that happened was that the dinosaur gotten a bad place to dwell in because the things that were damaging the abiotic, and the biotic objects.For many reasons why i think a volcano and a asteroid changes the way that the dinosaurs lived in the past.

JANAE said...

I think that when the giant asteroid struck the earth it caused the continents to break apart. After they started breaking the volcanoes probably started to erupt.Which must have caused the dinosaurs to run into the water because they didn't know that the continents had broke apart.

melissamit said...

The hypotheses that I find believable is the fossil record. The reason why I find this believable is because I wounder how many fossil were found with in a year. The second hypotheses that I found believable is asteroid damage the dinosaurs life's. The reason why I find this interesting is because it causes damages to the dinosaurs. The reason why it damages the dinosaurs is because there is a dangerous type of chemical. The chemical can get inside the dinosaurs food which is plants. And the dinosaurs will die.

TYRIQ(MIT) said...

Two hypotheses that I feel that are most believable about what killed dinosaurs is volcanism and ateroid impact. Volcanism is believable because many dinosaurs lived near volcanoes, and volcanoes could of had an affect on dinosaurs. Ancient lava has been found from millions of years ago so it could be a good possibility that volcanism was one of the factors. Asteroid impact is believable because many asteroids have hit the earth and has done many damage. It wouldn't be a surprise if an asteroid impact caused dinosaurs to die. It is very possible

melissamit said...

The hypotheses that I find believable is the fossil record. The reason why I find this believable is because I wonder how many fossil were found with in a year. The second hypotheses that I found believable is asteroid damage the dinosaurs life's. The reason why I find this interesting is because it causes damages to the dinosaurs. The reason why it damages the dinosaurs is because there is a dangerous type of chemical. The chemical can get inside the dinosaurs food which is plants. And the dinosaurs will die.

cLARitA>m>i.T! said...

the two stories that i find the most believable is the one when all of the dinosaurs was wiped out by a volcano eruption.The other story that i find the most believable is that the dinosaurs were unable to adapt fast enough to the changes of their environment and became extinct.and that is totally sad...i think...but if dinosaurs were still around how would we be able to survive around very loud and some dangerous creatures?.

Lajuan Allen Umass said...

I strongest agree about the asteroid impact. When i watched the little story and when Mr.B explained it then i saw when everything happened. A big dust cloud went a block the sun and killed all the dinosaurs. Now the Volcanic eruption is possible. The volcano could have erupted and killed all the dinosaurs by the heat.

JacoriUmass said...

I believe a meteor crashed on earth. Scientist believe said after the meteor hit a dust cloud flew up a blocked the sun. I believe this because if the sun was blocked out the plants would die. If the plants died the herbivores and would have no food source and they would die too. There is a food chain and plants are at the bottom of it. When herbivores died the predators that ate they died too. As each bottom parts of the chain died the predators died with them. The next part of the chain to go was the omnivores. When the lower species of dinosaurs died the food source was limited. Since the food was limited pretty soon they were all gone, even the Tyrannosaurus Rex died as well.

katrina umass said...

So it all started with meteor and Earth's atmosphere. So in space there was a meteor shower forming and then most of them fell on earth and then others floated around the atmosphere.Then A huge meteor came and then killed Some of the dinosaurs and the plants burned. The other dinosaurs that were herbivores died out because there was no plants to eat.Then the carnivores had nothing to eat after the herbivores died. Also they couldn't eat each other because They all starved to death.

JARI UMASS said...

The hypotheses that i find believable from the scientist is the ice age. I believe this because over the years the temp. has gone very high and very low. So, i believe this more than the others. When it gotten very cold, the animals didn't get used to it, and they died. Another reason why they died was because they didn't have any food to eat. Since it was cold for them , their food died also.

Vanessa, UMASS said...

I think that the dinosaurs could've got extinct by a volcanic explosion because volanoes do explode and when they do, they destroy a lot of things. I guess if one eruption is big enough it could wipe out the whole earth. Also maybe a meteor could hit the earth and be strong enough to spread across the whole earth and be as strong as a whole bunch of bombs that it leaves the whole earth in darkness.Those are the two theiories that I believe in.

Ruben UMASS said...

I think the reason why dinosaur die is because the asteroid. The asteroid hit the coast. The a dust flew up in the sky. Then because hard for dinosaurs to survives especially herbivores. Also i think that volcanic theory is why they got killed. This theory says all dinosaurs died because a lot volcanoes erupting.

Juan Umass said...

I believe the most plausible explanation is the meteor/comet theory. The meteor theory is that a meteor(asteroid) flew to Earth at 30kmh with A force of 300 million atomic blast. Earth's atmosphere filled with dust and gas from the impact of the blast and forset fires. Life, starved of sunlight for months. the majority of life on Earth perished. Because of the blast, greenhouse gases were created.
Another hypotheses I believe is the volcano theory. The Volcano theory or Volcanism is very plausible because Not only would Dinosaurs die out, most life would also die out. The Earth would gain more land because Lava+Water=Land. The water is the rain whether or not it's acid.
These two theories could be plausible and the most plausible in my opinion.

DeAndra Humphries Umass said...

The hypotheses that i found that is believable from the scientist is that volcanism was a reason for the dinosaurs extinction.I say this because the dinosaurs lived near volcanoes the lava darkens the sky and the organisms from the sky and lava start killing the dinosaurs.Thats why i say that the hypothesis is most believable.

Atyana MIT said...

The hypothesis I think is the reason why dinosaurs isn't here is the meteor.It really is a possibility as to why the dinosaurs have gone extincted.The lava acting up can cause the dinosaurs to not handle the world changing which means the lava can come out the volcano and the dinosaurs wouldn't take the heat.Another hypothesis is the fossils according to some scientists fossil evidence is the reason why dinosaurs aren't here.I think fossils can be the reason as to why the dinosaurs ain't here because the fossils probably have something in them that the dinosaurs species couldn't handle.It was probably ashes or some type of dirt.

Chavelyn MIT said...

Thier are a lot of hypotheses that scientist belived that answered what happened to the dinosaurs. The hypothese i believe most strongly about is the asteriod impact & the continetal Drift. This is the hypotheses i feel most strong about because,i think its more logical in my opinion. I was watching the discovery channel and they found evidance of on astriod that hit the planet. Another thing they said was that scientist say the same impact is going to happen. If so that needs to be a belief. The drift is another belief i feel strong about. I think this is another possiblilty of what happened to the dinosaurs because, the contentents changed it changed the dinosaurs ecosystem. This caused alot of dinosaurs to die. Both of my belief's changed the dinosaurs ecosytem. The Astriod changed it because it ended it! It wiped them out. The drift changed the ecosystem as well. This is so because all 7 contentents were togethor, but then they departed from each other. That changed everything because in the dessert for example it used to have lots of water and now it dosent. All living things need water to survive. So because the dinosaurs didnt have the water, the dinosaurs died. That changed everything and they died. These are the two hypothese i feel strongly about the Astriod Impact and Continetal drift.!

Anjanique-Harvard said...

There are many different hypotheses they have one of the greatest creatures.DINOSAURS!!!and why they are extinct.But what can be the real reason?What really happen?I believe that it was an Asteroid Impact.The Asteroid Impact is when scientist believe dinosaurs extinct because of an comet coming in.This I believe happens to be one of the best hypotheses.Scientist also question did the comet change the earth forever?Knowing some history on dinosaurs I believe if that comet never came and supposedly killed the dinosaurs humans would be one of the two.Never alive or cave women and men.There are many different hypotheses on what killed the dinosaurs.But what could it be,what ever happen?This is what we need to know and what we are determined to know off of these hypotheses.

Wilson J. Felipe(Harvard) said...

Some point in life our time of death comes for you.Dinosaurs means a fossil reptile of the Mesozoic era, often reaching an enormous size,by what the dictionary says.On my opinion what killed the dinosaurs were either a meteor or a volcano eruption.For example,if it was the meteor the force of the meteor crashing in to earth made a big wave of fire that caused a huge destruction.Another example,if it was the volcano it went like this the magma chamber it breaks the fault and the magma gets so much air that it goes out the vents.After
,it creates clouds of volcanic ash and it lastly creates a land slide,
which it ends up being new land.Are time of death will some day come and hunt us down.

AJohnson said...

There is a good possibility that we will never know what REALLY wiped out the dinosaurs from the face of the Earth. If I had to take a wild guess though, on the top two hypothesis' that killed the dinosaurs, I'd have to say an asteroid/ commit or the eruption of volcanoes. During the time period that the dinosaurs ruled the Earth, it was known as a cretaceous time period. Therefore it would be an educated guess to say that an asteroid did indeed wipe out the dinosaurs. The other possibility is that the eruption of volcanoes caused the dinosaurs to all die. During that time more volcanoes erupted and they were mostly likely more dangerous and most likely had a fatal effect than volcanoes do now. In essence, what REALLY killed the dinosaur may stay a mystery for millions of more years to come.

Ramon Reyes said...

In the past there were dinosaurs all over the world.Then something happened to them that caused them to become extinct. What i think happened was that there was a asteroid that came and hit the world. Then the dinosaurs all died except a couple things like lizards and crocodiles.So the dinosaurs didn't make it when the asteroid hit the earth.

Kayla MIT said...

Their are two hypothesis that I thought would have mainly killed the dinosaurs. One hypothesis is the lava flows. I think that lava flows killed the dinosaurs because if the when the valcanoes erupted they killed about 70% of all species, and I bet most of them were dinosaurs. The second hypothesis that I found interesting and might be a huge involvement in the dinosaurs dying is sea level. the water dried up causing the dinosaurs to thirst and maybe die from thirst.

Kayla MIT said...
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angel M.I.T said...

The thing that killed dinosaurs was an asteroid. His is what killed the dinosaurs in the past.The other thing that killed the dinosaurs is a volcano. That volcano erupted and some of the dinosaurs died and the other ones died.

NiiAh M. MiT said...

The first thing that i think is believeable to what hapen to the dinosaurs in that there was a lot of damage from volcanos. Also an asteroid hit the their habitat and it wiped them out. Dinosaurs lived near many volvanos and things that could damage the population. And an asroid came flying through and hit the place they were living.

TiffanyRosario Harvard said...

The hypotheses that i believe the most will have to be, that the dinosaurs died because of the volcanic explosion. The ash made a big cloud that covered the sun and the dinosaurs don't have light. I believe that the ash and the smoke killed the dinosaurs because they couldn't breath. So i think that the volcanic explosion was what caused the dinosaurs to die.

Albert***BC*** said...

The answer I went with is meteor and volcanic explosion.The meteor can hit earth and destroy the dinosaurs land which is their habitat.When their habitat is vanish they would be no homes for them because the mammals had already take over the land.The volcanic explosion could had a explosion which is lava.When the lava had spread it will burn the dinosaurs and killed them.That is my experience for what happen.

Chris *UMASS* said...

The two hypotheses that I feel are most believable is the Asteroid Impact and Volcanism. I belive that a asteroid hit the planet. Causing a giant dust cloud to rise and block the sun and make all the vegetation on the planet die. Thus ending a lot of dinosaurs food supplies. If not that I think maybe a chain of volcano's erupted at the same time. Causing lava to flow and kill many dinosaur's and alot of plants. And because its extreamy hot its not possible that they can live.

SHANEI C. said...

I think the dinosaurs died because of the dinosaurs killed each other. They killed each other by eating each other. Maybe there was no more food so they had to eat each other. They also could have died because of the the continental drift when allof the continents split up. The dinosaurs could have ended up in the water and drowned.

Danaya,MIT said...

The reason why dinosaurs are extinct is because a huge rock hit the earth and most of the dinosaurs died.An asteroid that the an cimical reaction in the rock hit the earth and most of the dinosaurs died. Another reason is because an volcano's could have eruped. I chose both of those hypotheses because it could be possible.

Arelletty V. Umass said...

The two hypotheses that I feel are most believable to the dinosaur extinction is that by a Impact Crater and Asteroid Impact.I think that the dinosaurs extinct because of the impact of the crater on the land.The Asteroid Impact effected the dinosaurs because it killed everything on earth 65 million years ago.The date is at the time as when the dinosaurs became extinct.

Edwin(BC) said...

I have to hypotheses for my answer of how the dinosaurs died. One of my hypothese is that the meteor showers made them go extinc. My second hypothese is they couldn't adapt to the changes in they're enviroment. I choose the enviroment hypothese because i don't think the dinosaurs could adapt to the weather changes. The other hypothese I choose was the meteor shower and I choose that one because Meteors hit the earth alot back in those times and it would cause big impacts pending on how big the meteors were and would change the enviroment and cause the weather chang. That's why I choose these two hypotheses.

shanei mit said...

I think that the dinosaur died because og volcanic explosians. There could have been gas that distroyed there lives. Also because of the continental drift. Maybe they drowned in the oceans.

Jeniiah M Mit said...

The first thing that i think is believeable to what hapen to the dinosaurs in that there was a lot of damage from volcanos. Also an asteroid hit the their habitat and it wiped them out. Dinosaurs lived near many volvanos and things that could damage the population. And an asroid came flying through and hit the place they were living.