Global warming

Global warming

Open Ended

What is global warming and how long has it been going on?

Multiple Choice

1.Where does most of the energy that warms the Earth’s surface come from?

• Sun

• Electricity

• Warmth generated from animals

Open Ended

1.What is meant by the greenhouse effect?

Open Ended

1.Explain how carbon dioxide in the air helps to cause the greenhouse effect?

Multiple Choice

What does the 0 mean on the graph?

• Its freezing at 0 degrees Celsius

• 0 change.

• No data

Open Ended

Suggest a reason for this change

Open Ended

Can you describe the trend in the data on this graph