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1 2 3 Write down three observations and an inference Write down two observations Example : There are three candles

1 2 3 Write down three observations and an inference Write down two observations Example : There are three candles

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Page 1: 1 2 3 Write down three observations and an inference Write down two observations Example : There are three candles

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Write down three observationsand an inferenceWrite down two observationsExample : There are three candles

Page 2: 1 2 3 Write down three observations and an inference Write down two observations Example : There are three candles

Why did the candles blow out?

Let’s investigate a similar situation…

Page 4: 1 2 3 Write down three observations and an inference Write down two observations Example : There are three candles

Where is Cameroon?• Cameroon is located under

a region of volcanic activity

Page 5: 1 2 3 Write down three observations and an inference Write down two observations Example : There are three candles

Where is Cameroon?

• The volcanic activity created a chain of islands• The volcanic

activitycreatesvolcanoeson land

Page 6: 1 2 3 Write down three observations and an inference Write down two observations Example : There are three candles

What is a volcano?

• Magma rises up, cutting a cylinder in the Earth

• When it reaches the surface, it may cut a hole in the surface and erupt lava and rock

Page 7: 1 2 3 Write down three observations and an inference Write down two observations Example : There are three candles

How did Lake Nyos form?

• Magma may hit wet rock and explode, causing craters

• These cratersmay fill up with water

Page 8: 1 2 3 Write down three observations and an inference Write down two observations Example : There are three candles
Page 9: 1 2 3 Write down three observations and an inference Write down two observations Example : There are three candles

Carbon DioxideCarbon Dioxide Carbon Dioxide

Page 10: 1 2 3 Write down three observations and an inference Write down two observations Example : There are three candles

Carbon Dioxide

CO2CO2

CO2

CO2

CO2

Carbon Dioxide is denser than Oxygen…

O2 O2O2

O2 O2

CO2 = Carbon DioxideO2 = Oxygen

Page 11: 1 2 3 Write down three observations and an inference Write down two observations Example : There are three candles

CO2

CO2

CO2CO2

O2

O2O2

O2

O2

Page 12: 1 2 3 Write down three observations and an inference Write down two observations Example : There are three candles
Page 13: 1 2 3 Write down three observations and an inference Write down two observations Example : There are three candles
Page 14: 1 2 3 Write down three observations and an inference Write down two observations Example : There are three candles
Page 15: 1 2 3 Write down three observations and an inference Write down two observations Example : There are three candles
Page 16: 1 2 3 Write down three observations and an inference Write down two observations Example : There are three candles
Page 17: 1 2 3 Write down three observations and an inference Write down two observations Example : There are three candles
Page 18: 1 2 3 Write down three observations and an inference Write down two observations Example : There are three candles

EXTRA SLIDES

Page 19: 1 2 3 Write down three observations and an inference Write down two observations Example : There are three candles

Carbon dioxide demonstration with balloon and water bottle

Page 20: 1 2 3 Write down three observations and an inference Write down two observations Example : There are three candles