Dinosaur Extinction

How old is the K-T boundary?

• 65 MYA

• 4.5 BYA

• 2 MYA

• A long time ago

Tags

NGSS.MS-ESS1-4

What is unique about the K-T boundary?

• The color it has

• It's enormous width

• The position in the sediments

• Its high concentration of Iridium

Tags

NGSS.HS-LS4-5

Where did the Iridium in K-T boundary come from ?

• The explosion of a Supernova

• An asteroid that crashed into the Earth

• The Sun

• The vulcanism that occurred during Carboniferous

Where was the crater found?

• In the Yucatan Peninsula

• In Mexico DC

• In Texas 

• In North Dakota

Why can the K-T boundary be considered  like a "last frontier" for Dinosaurs?

• They loved this layer of clay

• No dinosaur fossils have been found above this layer

• No dinosaur fossils have been found below this layer

• They lived in this layer of clay

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

What is the name the transition marked by the clay?

• ZA boundary

• AZ boundary

• Extinction event

• KT boundary

Tags

NGSS.MS-ESS2-3

Why did Louis Alvarex get the idea that the boundary clay at the KT boundary was the result of an asteroid impact?

• Because it contains daimonds

• Because it contains large stones

• Because it contains a high amount of Iridium

• Because it contains shocked quartz

What kind of plants resisted the catastrophic impact the best?

• Oaks

• Grass

• Ferns

• All of above

Tags

NGSS.MS-LS2-4

Many scientist believe ________________ from space played a role in dinosaur extinction.

• stars

• planets

• supernovas

• meteorites

Tags

NGSS.MS-ESS3-2

NGSS.MS-LS4-1

What blocked the sunlight and contributed to dinosaur extinction?

• huge plant leaves

• dust from a meteorite crashing into Earth

• tall mountains

• 100 days of rain clouds

Tags

NGSS.MS-LS4-1