When ice caps melt...

Thermohaline circulation slows, slowing transfer of heat

Which extinction had impact events?

Impact events could've contributed to all the extinctions

Why are extinction events important?

They enable separate animal kingdoms to prosper through time

Extinction events occur, on average about…... the last one occurred…...

~ every 60 million yrs, last one = 62 million years

How have recent ice core samples differed from ice cores samples of the past?

Samples show 3X higher levels of C02 than ever recorded

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Duplicate of Endangered Animals and Extinctions

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Questions 23

Answers

1
What can determine the amount of C02 in the atmosphere?
Ice cores
Fossils
Water
Eruptions
2
The most recent extinction which paved the way for mammals to evolve...?
Cretaceous Tertiary
Permian
Triassic Jurassic
Ordovician
3
When ice caps melt...
Thermohaline circulation accelerates, unstable weather
Thermohaline circulation speeds up, increasing global temp.
Thermohaline circulation is not affected by ice caps
Thermohaline circulation slows, slowing transfer of heat
4
The convection of warm, less dense fresher water and colder, denser salty water
Thermohaline Circulation
Global Conveyer Belt
Oceanic Currents
Global Circulation
5
Which extinction had impact events?
Triassic
Permian
Impact events could've contributed to all the extinctions
Late Denovian
6
Global warming can cause an ice age….
False
True
7
The "great dying"
Cretaceous Tertiary
Devonian
Permian
Ordovician
8
The extinction where coral reefs and shallow sea ecosystems were affected the most...
Ordovician
Late Denovian
Cretaceous Tertiary
Permian
9
The geological period during the melting of the last ice age around 10000 years ago up to today
Triassic Jurassic
Late Denovian
Cretaceous Tertiary
Holocene
10
All of the following are results of global climate destabilization except...
Uniformly warmer temperatures
Loss of fresh water in ice caps
Rising Sea Levels
Ice Age
11
Why does CO2 increase temperature?
C02 blocks the sun out
C02 magnifies UV radiation
C02 has very high internal temperatures
Fossil fuels trap heat in
12
The first extinction of the Dinnosaurs, many Dinnosaurs survived and evolved
Permian
Cretaceous Tertiary
Triassic-Jurassic
Ordovician
13
An average ice core sample dates back
Around half a million
1 million years
500 billion years
Since the earth has had ice caps
14
Why are extinction events important?
Extinction events cannot be beneficial
Extinction events ensure the best genetic diversity
Extinctions maintain the population of the planet
They enable separate animal kingdoms to prosper through time
15
Which of the following is NOT an indicator or extinction events?
Asteriods approaching earth
Famine
Rising Sea Levels and Climate Change
Increased CO2
16
The extinction where 96% of all species on earth died off....
Permian
Ordovician
Triassic-Jurassic
Cretaceous Tertiary
17
The last of the 5 major extinctions...
Permian
Cretaceous Tertiary
Triassic-Jurassic
Ordovician
18
Why is C02 a greenhouse gas?
C02 heats air particles
C02 traps sunlight
C02 blocks sunlight
C02 comes from greenhouses
19
Why did the dinosaurs die?
Climate Change
Volcanic Eruptions
All the above
Impact Events
20
Extinction events occur, on average about…... the last one occurred…...
~ every 60 million yrs, last one = 62 million years
~every 100 million, last one = 62 million years ago
~ every 500,000 years, last one = 500,000 years ago
~ every 10,000 years, the last one = 5,000 years ago
21
How have recent ice core samples differed from ice cores samples of the past?
Ice cores show more pollution in the atmosphere than ever
The ice cores reveal lower levels of C02 than previously
Samples show 3X higher levels of C02 than ever recorded
There has been little deviation in samples over the years
22
Which describes our current climate change?
Temperatures have remained constant
Cooling, heading towards ice age
Warming from last ice age
23
The extinction where the majority of animals who expired were sea creatures...
Late Denovian
Cretaceous Tertiary
Triassic Jurassic
Ordivician

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