
The Day the Mesozoic Died Video Flashcard
Flashcard
•
Science
•
7th - 12th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the Mesozoic Era?
Back
The Mesozoic Era is known as the Age of Dinosaurs, lasting from about 252 to 66 million years ago.
2.
FLASHCARD QUESTION
Front
What significant event marks the end of the Mesozoic Era?
Back
The mass extinction event caused by an asteroid strike, leading to the extinction of many species, including dinosaurs.
3.
FLASHCARD QUESTION
Front
What is the KT boundary?
Back
The KT boundary is a geological marker that signifies the transition between the Cretaceous and Tertiary periods, associated with the mass extinction event.
4.
FLASHCARD QUESTION
Front
What is iridium and why is it significant in the KT boundary?
Back
Iridium is a rare element found in higher concentrations in asteroids; its presence in the KT boundary supports the asteroid impact hypothesis.
5.
FLASHCARD QUESTION
Front
What is the asteroid strike hypothesis?
Back
The hypothesis that a large asteroid impact caused drastic environmental changes, leading to mass extinction.
6.
FLASHCARD QUESTION
Front
What evidence supports the asteroid strike hypothesis?
Back
The presence of iridium in the KT boundary and the discovery of the Chixulub crater.
7.
FLASHCARD QUESTION
Front
Where is the Chixulub crater located?
Back
The Chixulub crater is located on the Yucatan Peninsula in Mexico.
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