t2 w3 causes of climate change

climate change intro + causes

what is happening to our climate?

where’s the ice?

where’s the ice?

where’s the ice?

WHY is this

happening?

• Define “climate change”

• Explain natural causes of climate change

• Explain human causes of climate change

by the end of the lesson

quiz!1\

qns 1Climate Change is the same as Global Warming

5:20

True? False?

qns 1Climate Change is the same as Global Warming

5:20

True? False?

Climate change = climate patterns changing. It’s not just warming. Includes cooling.

Global warming = increase in temperature ONLY.

qns 2Climate Change is caused by humans only.

True? False?

qns 2Climate Change is caused by humans only.

True? False?

There are natural causes to climate change.

qns 3Climate Change is a recent phenomenon

True? False?

qns 3Climate Change is a recent phenomenon

True? False?

Earth Climate has been changing as a cycle naturally for millions of years.

Temperature of the world has been changing throughout history naturally.

There were times where Earth was cooler than today = ice age

qns 4Since there has been climate change throughout history, there is nothing to worry.

True? False?

qns 4Since there has been climate change throughout history, there is nothing to worry.

True? False?

The recent changes since 1881 is more significant than what happened in history.

Climate Change has been within a small temperature range

Climate Change has been within a small temperature range

But since 1881, the increase is higher than what happened in history

key concepts

2

climate change= changes / variations in global climate patterns in the long term

climate change= changes / variations in global climate patterns in the long term

= not just changes in average temperature. Eg: Changes in when the seasons occur is also climate change!

climate change= changes / variations in global climate patterns in the long term

climate change= changes / variations in global climate patterns in the long term

one

way

it h

appe

ns…

global warmingINCREASE in global temp. after a long period of time

climate change= changes / variations in global climate patterns in the long term

one

way

it h

appe

ns…

global warmingINCREASE in global temp. after a long period of time

global coolingDECREASE in global temp. after a long period of time

one way it happens…

greenhouse effectNATURAL effect of greenhouse gases trapping energy from the sun to warm the Earth.

greenhouse effect

But if we…..

greenhouse effect

But if we…..

+ Greenhouse Gases

greenhouse effect

But if we…..

+ Greenhouse Gases

+ Greenhouse Gases

greenhouse effect

But if we…..

+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases

greenhouse effect

But if we…..

+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases

greenhouse effect

But if we…..

+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases+ Greenhouse Gases

greenhouse effect

But if we…..

+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases+ Greenhouse Gases

+ Greenhouse Gases

greenhouse effect

But if we…..

+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases

greenhouse effect

But if we…..

+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases+ Greenhouse Gases

greenhouse effect

But if we…..

+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases+ Greenhouse Gases+ Greenhouse Gases

greenhouse effect

But if we…..

+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases+ Greenhouse Gases+ Greenhouse Gases

+ Greenhouse Gases

greenhouse effect

But if we…..

+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases+ Greenhouse Gases+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases

greenhouse effect

But if we…..

+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases+ Greenhouse Gases+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases+ Greenhouse Gases

greenhouse effect

But if we…..

+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases+ Greenhouse Gases+ Greenhouse Gases

+ Greenhouse Gases

+ Greenhouse Gases+ Greenhouse Gases

= ENHANCED greenhouse effect

enhanced greenhouse effect

≠ (is not the same as)

global warming

enhanced greenhouse effect

≠ (is not the same as)

global warming

= more greenhouse gas = more greenhouse effect

= more heat trapped

= increase in temperature

enhanced greenhouse effect

global warming

= more greenhouse gas = more greenhouse effect

= more heat trapped

= increase in temperature

enhanced greenhouse effect

global warming

= more greenhouse gas = more greenhouse effect

= more heat trapped

= increase in temperature

one of the causes of

once we understand the concepts…

how do we explain that something caused climate change?

Let’s work backwards…

climate change

climate change

global warming

Indicates

climate change

global warming

Indicates

global cooling

Indicates

climate change

various factors

climate change

global warming

Indicates

various factors

climate change

global warming

Indicates

global cooling

Indicates

various factors

climate change

global warming

Indicates

global cooling

Indicates

increase in global temp.

various factors

climate change

global warming

Indicates

global cooling

Indicates

increase in global temp.

decrease in global temp.

various factors

once we understand the concepts…

causes of climate change

3

refer to your textbook pg 98-108fill up the story in the handout

determine what are the possible reactions and outcomes

try mission on coursemology