Dinosaurs and Asteroid Impact Effects

Dinosaurs ruled Earth for 160 million years until a massive asteroid impact led to their extinction. The Cretaceous period saw diverse dinosaur species and significant geographical changes. The asteroid impact caused catastrophic events, leading to the extinction of 75% of life. In the aftermath, mammals rose to dominance, eventually leading to the emergence of humans.

How long did dinosaurs dominate the Earth before their extinction?

• 250 million years

• 200 million years

• 160 million years

• 100 million years

Which continents had the same shape as today by the end of the Cretaceous period?

• Antarctica and Asia

• North and South America

• Europe and Asia

• Africa, Australia, and Greenland

What type of plants emerged during the Cretaceous period?

• Conifers

• Ferns

• Flowering plants

• Mosses

Which dinosaur is considered the largest among the predatory dinosaurs of the Cretaceous period?

• Carnotaurus

• Velociraptor

• Tarbosaurus

• Tyrannosaurus Rex

What was the primary diet of the Ankylosaurus?

• Carnivorous

• Omnivorous

• Herbivorous

• Insectivorous

What was the estimated speed of the asteroid as it approached Earth?

• 15 kilometers per second

• 10 kilometers per second

• 25 kilometers per second

• 20 kilometers per second

What percentage of living creatures were killed by the asteroid impact?

• 50%

• 90%

• 60%

• 75%

What natural disaster followed the asteroid impact, causing further destruction?

• Earthquakes

• Volcanic eruptions

• Hurricanes

• Tsunamis

Which era began after the extinction of the dinosaurs?

• Paleozoic Era

• Mesozoic Era

• Cenozoic Era

• Proterozoic Era

What group of animals thrived after the extinction of the dinosaurs?

• Birds

• Mammals

• Amphibians

• Reptiles