Free Powerpoint Presentations

Pollution
Page
1

DOWNLOAD

PREVIEW

WATCH ALL SLIDES

Slide 1

How do we pollute our environment?

How do we pollute our environment?

List 5 ways

Slide 2

Air pollution

Air pollution

can you think of any examples?

Slide 3

Water pollution

Water pollution

can you think of any examples?

Slide 4

Land pollution

Land pollution

can you think of any examples?

Slide 5

Impact on the Carbon Cycle

Impact on the Carbon Cycle

List as many ways that human activity may disrupt the Carbon Cycle

Use your cycle diagram to help you

Discuss

Slide 6

What are fossil fuels?

What are fossil fuels?

Fossil fuels are hydrocarbons, primarily coal, petroleum, fuel oil and gas.

They formed from the fossilised remains of dead plants and animals by exposure to heat and pressure in the Earth's crust over hundreds of millions of years

Slide 7

Whats the problem?

Whats the problem?

The burning of fossil fuels by humans is the largest source of emissions of carbon dioxide, which is one of the greenhouse gases that contributes to global warming.

This means that the surface temperature of the Earth will rise in response.

Slide 8

Fossil Fuels

Fossil Fuels

Slide 9

What can we do?

What can we do?

List at least 5

Slide 10

Indicator species:

Indicator species:

Looking at Lichens Lichens are the crusty organisms that grow in places such as on rocks and bricks.

You can also find them on gravestones and the side of trees.

They range in colour from grey-green to orange and red.

Slide 11

Lichens

Lichens

Sulphur dioxide gas is produced when fuels like coal and oil are burned.

Some lichens are very sensitive to air pollution

In areas of low air pollution:

-a large variety of different lichen species

-lichens tend to be big and fluffy

In areas of high air pollution:

-very limited variety of lichen species

-lichens tend to be small and crusty

We can use lichens as an indicator species.

Explain what you think an indicator species is!

Contents

Last added presentations

2010-2018 powerpoint presentations