I have marked your books... Write the title in your books clearly. Keep them neat...my year 7’s are much neater. Ensure when I set you questions in class you complete them in full sentences. So you can revise from them When you get home learning, put your name on it and stick it in straight away.

C/W 3 rd November 2011 Ozone Keywords: ozone Objectives: Must – Understand that ozone protects living organisms Should – Know whether to accept different risks

Starter  What is the main problem that hole in the ozone layer can course?

Very important  The problem of the hole in the ozone layer is that there is more chance of skin cancer for human beings....The increase in sea level rise is less significant. The increase in ‘global warming’ isn't significant!

C/W 8 th November 2011 The greenhouse effect Keywords: atmosphere greenhouse effect principal frequency methane Objectives: Must – Understand what the greenhouse effect is and how it is caused. Should – Understand that scientists need good evidence to be sure that a factor causes an outcome.

Given our distance from the sun, the earth is about 30 o C hotter than you would expect. Why might this be?

Not the same as the hole in the ozone layer!!!!

Complete activity 1

Activity 1 answers a)reflects; b) transmits; c) absorbs; d) reflects; e) absorbs; f) transmits

The temperature of the moon varies between 123 and -223 o C depending on if the sun is shining on it or not. The earth has ranged between 70 °C (in Iran) and the lowest is −89 °C (in Antarctica). Why is there this difference despite the two being similar distances from the sun? Complete activity 2

Activity 2 answers a)Clues 1, 6; b) 2, 4; c) 3, 4; d) 3, 7, 8

There is a big debate about whether humans use of fossil fuels are affecting the greenhouse effect This is because: There are lots of factors involved Climate changes any way the effect is small and happens slowly over time

H/W for Thursday 10 th November activity 3.

Plenary Tell your partner one thing you have learnt today, then swap, then tell somebody else. I will ask you what they have learnt!

Plenary  Make a spider diagram: define greenhouse effect; explain its causes; explain its effects (3 mins)

C/W 8 th November 2011 The greenhouse effect Keywords: atmosphere greenhouse effect principal frequency methane Objectives: Must – Understand What the greenhouse effect is and how it is caused Should – Understand that scientists need good evidence to be sure that a factor causes an outcome.