Mass Extinctions: Annihilation from Above!

Question 1

Evidence from rock layers shows that this extinction event happened at what point in time?

Accepted Answer

66 million

Question 2

NEXT STEPS: Where can you find more information about extinction events?

Accepted Answer

Infiniscope, National Aeronautics & Space Administration, Arizona State University-School of Earth & Space Exploration, American Museum of Natural History

Question 3

Which of the following is NOT true about the asteroid that killed the dinosaurs?

Accepted Answer

Its velocity was 400 m/s

Question 4

Which of these groups did NOT go extinct at the KPg boundary?

Accepted Answer

Crocodilia

Question 5

Near which area is the impact crater located that led to the extinction of the dinosaurs?

Accepted Answer

Chicxulub, Mexico

Question 6

Which element found in rock layers suggests there was an impact from space?

Accepted Answer

Iridium

Question 7

In what type of rock are we most likely to find fossils of extinct organisms like dinosaurs?

Accepted Answer

sedimentary

Question 8

How many major extinctions have happened on Earth over the past 500 million years?

Accepted Answer

5 mass extinctions

Question 9

True or False: An asteroid impact contributed to the extinction of the dinosaurs.

Accepted Answer

True

Question 10

Some asteroids are known as Near Earth Objects. Which has the closest approach to Earth?

Accepted Answer

Apophis (38,000 km in 2029)

Mass Extinctions: Annihilation from Above!

Questions 10

Mass Extinctions: Annihilation from Above!

Questions 10