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Has earth ever had a meteor strike?
Yes Halley's comet struck Arizona over 63 million years ago and is believed to have caused the extinction of dinosaurs.
Was the extinction of dinosaurs caused by a metoerite crashing to earth?
Most dinosaurs died off about 65 million years ago. Most life on Earth ended 65 million years ago during what is called the Cretaceous-Paleogene extinction event. There is substantial scientific evidence of an asteroid or comet impact on Earth that caused or was the primary contributor to the extinction. A few scientists still hold other views, including a massive eruption of volcanoes. See related links.
Some scientists think the what became extinct when one of these comets came crashing into the Earth?
Some scientists believe that dinosaurs became extinct when a comet crashed into Earth. This catastrophic event led to widespread environmental changes, including extreme climate conditions that likely contributed to the mass extinction of dinosaurs and many other species.
The mass extinction at the end of the Mesozoic Era was caused by .?
a comet impacting the earth
What is the name of the comet that wiped out dinosaurs?
Scientists usually refer to this as an asteroid, not a comet. It's the asteroid that caused the Chicxulub crater.
Has earth ever had a meteor strike?
Yes Halley's comet struck Arizona over 63 million years ago and is believed to have caused the extinction of dinosaurs.
Was the extinction of dinosaurs caused by a metoerite crashing to earth?
Most dinosaurs died off about 65 million years ago. Most life on Earth ended 65 million years ago during what is called the Cretaceous-Paleogene extinction event. There is substantial scientific evidence of an asteroid or comet impact on Earth that caused or was the primary contributor to the extinction. A few scientists still hold other views, including a massive eruption of volcanoes. See related links.
Walter and luis alvarez think that a large rocky object is what?
Walter and Luis Alvarez proposed the theory that a large rocky object, such as an asteroid or comet, colliding with Earth caused the mass extinction of the dinosaurs. This theory is known as the Alvarez Hypothesis.
Some scientists think the what became extinct when one of these comets came crashing into the Earth?
Some scientists believe that dinosaurs became extinct when a comet crashed into Earth. This catastrophic event led to widespread environmental changes, including extreme climate conditions that likely contributed to the mass extinction of dinosaurs and many other species.
The mass extinction at the end of the Mesozoic Era was caused by .?
a comet impacting the earth
What is the name of the comet that wiped out dinosaurs?
Scientists usually refer to this as an asteroid, not a comet. It's the asteroid that caused the Chicxulub crater.
Why was the comet impact a chance happening that benefited the evolution of humans?
Because that comet, which sent many dinosaurs into extinction, caused the mammals to go through a large adaptive radiation event that allowed the vast variation in mammals we see today, especially the variations called apes.
When was the last time a comet hit earth and caused an extinction?
The Cretaceous Paleogene extinction event about 65 million years ago.
How might a collision with a meteor or comet have caused the extinction of the dinosaurs?
The asteroid impact would have thrown an enormous amount of dust and ash into the atmosphere. This would have blocked out sunlight for months or years, killing plants. With no plants to eat, the herbivorous dinosaurs would have starved. The carnivorous dinosaurs would have then starved, since they would have had no prey.
Did Luis Walter Alvarez have a brother?
Yes, Luis Walter Alvarez had a brother named Walter Alvarez who was also a renowned scientist. Walter Alvarez is best known for his work on the hypothesis that a comet impact caused the mass extinction of dinosaurs.
Did early mammals cause the extinction of dinosaurs?
No. By the time the dinosaurs went extinct mammals still played a relatively minor role ecologically. It is generally accepted that an asteroid or comet struck the earth, causing ecosystems to collapse worldwide and resulting the extinction of many groups of animals including the dinosaurs.
Why is it important to understand the cause of the dinosaurs extinction?
Understanding the causes of an extinction can help us prepare for and hopefully prevent a similar situation in the future. The fact that as much as 90% of dinosaur species died out from climate change near the end of the Mesozoic warns us not to allow global warming to get out of hand. Because we know that the death blow to the dinosaurs was the asteroid impact, astronomers keep track of Near Earth Objects, and are formulating plans for deflecting a large asteroid or comet in the event that one heads toward Earth.
