Outline/questions for 13.2: Ozone Shield

The following are questions about the ozone shield that should be answered in a good outline of 13.2

What is the ozone layer made of?

What layer of the sky is it in?

How high up is this?

What does it protect us from?

Chemicals that cause ozone depletion

What chemicals damage the ozone layer?

How long does it take them to reach the ozone layer from the surface of the earth?

One CFC can destroy _______ ozone molecules.

The Ozone Hole

When did scientists first notice a thinning of the ozone layer?

Where is it the most thin?

How does the Ozone hole form?

What is the polar vortex?

Where does it occur?

How cold are these winds?

What are polar stratospheric clouds?

Where do they form?

When do they form?

What are they made of?

On the surface of these clouds ________ is converted to molecular ___________.

When these molecular chlorine are hit by _____ light in the spring they split into chlorine atoms which then destroy ________.

Affects of Ozone thinning of Humans

How does the thinning of the ozone layer affect humans?

Affects on Ozone thinning on Animals and plants

How does it affect other living things on earth?

What are phytoplankton?

How might they be affected by a thinning Ozone layer?

How does it affect plants?

How does it affect amphibians (like frogs)?

Protecting the Ozone layer

What have people done to protect the ozone layer?

What was the Montreal Protocol?

When was it passed?

Was it successful?