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dinosaurs and fossils!

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

1. What are fossils?

a)

dinosaurs that were once thought to steal eggs out of nests

b)

feathers that the Citipati dinosaur may have had on its arms

c)

remains of ancient life that are usually buried in rock

d)

s-shaped necks and other similarities between birds and dinosaurs

2.
What is called the thin layer of dark clay?
a)
Walter Alvarez Layer
b)
Italian layer
c)
K-T boundary
d)
Foraminifera's boundary
3.
The K-T boundary can be found in:
a)
Italy
b)
Italy and Spain
c)
Europe 
d)
Almost all around the world
4.
The K-T boundary separates which two periods in Earth's history?
a)
Cretaceous and Tertiary
b)
Cretaceous and Jurassic
c)
Jurassic and Permian
d)
Carboniferous and Jurassic
5.
Which event is related to the K-T boundary?
a)
The Mammoth extinction
b)
 The Dinosaurs extinction
c)
The Foraminifera extinction
d)
All of above
6.
How old is the K-T boundary?
a)
65 MYA
b)
4.5 BYA
c)
2 MYA
d)
A long time ago
7.
What is unique about the K-T boundary?
a)
The color it has
b)
It's enormous width
c)
The position in the sediments
d)
Its high concentration of Iridium
8.
What is Iridium?
a)
A common metal in the Earth
b)
A rare metal in the Earth
c)
A rare metal in the Moon
d)
A particular type of fossil 
9.
Where did the Iridium in K-T boundary come from ?
a)
The explosion of a Supernova
b)
An asteroid that crashed into the Earth
c)
The Sun
d)
The vulcanism that occurred during Carboniferous
10.
why was it important to find a huge crater for Alvarez's investigation?
a)
To find the Iridium
b)
To prove the impact of a huge asteroid
c)
To prove the extinction of dinosaurs
d)
To find the fossil of the oldest dinosaur
11.
Where was the crater found?
a)
In the Yucatan Peninsula
b)
In Mexico DC
c)
In Texas 
d)
In North Dakota
12.
Why can the K-T boundary be considered  like a "last frontier" for Dinosaurs?
a)
They loved this layer of clay
b)
No dinosaur fossils have been found above this layer
c)
No dinosaur fossils have been found below this layer
d)
They lived in this layer of clay
13.
What was the reason why the dinosaurs disappeared after the asteroid impact?
a)
Because of the lack of sunlight
b)
Due to the enormous energy released after the impact
c)
As a result of the collapse of the food chain
d)
All the above were responsible
14.
What kind of plants resisted the catastrophic impact the best?
a)
Oaks
b)
Grass
c)
Ferns
d)
All of above
15.

Why was shocked quartz a key piece of evidence?

a)

because quartz is only found on land so the crater had to be on land

b)

because quartz is only found on the sea floor so the crater had to be in the water

c)

because quartz is a rare metal from outer space

d)

because shocked quartz was not found above the K/T boundary

16.
What is the name the transition marked by the clay?
a)
ZA boundary
b)
AZ boundary
c)
Extinction event
d)
KT boundary
17.
Why did Louis Alvarex get the idea that the boundary clay at the KT boundary was the result of an asteroid impact?
a)
Because it contains daimonds
b)
Because it contains large stones
c)
Because it contains a high amount of Iridium
d)
Because it contains shocked quartz
18.

Where was the asteroid crater found that is thought to have wiped out the dinosaurs?

a)

Sudbury, Ontario

b)

Chicxulub, Mexico

c)

Vredefort, South Africa

d)

Beaverhead, Idaho and Montana border

19.
Which layer is oldest?
a)
A
b)
W
c)
G
d)
Z
20.

What type of rock are fossils normally found in?

a)

Igneous

b)

metamorphic

c)

sedimentary

d)

all of the above

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