B7b/C9 Fit
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La durée de la leçon est: 50 minÉléments de cette leçon
Slide 1 - Diapositive
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What is the equation for photosynthesis?
Glucose
Oxygen
Carbon dioxide
water
Slide 2 - Question de remorquage
Slide 3 - Vidéo
What was the source of oxygen in the Earth's early atmosphere?
A
Volcanic activity
B
Photosynthetic bacteria
C
Meteor impacts
D
Photosynthetic organisms
Slide 4 - Quiz
Which gas was most abundant in the Earth's early atmosphere?
A
Water vapor
B
Carbon dioxide
C
Oxygen
D
Nitrogen
Slide 5 - Quiz
What gases were present in the Earth's early atmosphere?
A
Nitrogen
B
Water vapor
C
Oxygen
D
Carbon dioxide
Slide 6 - Quiz
What role did volcanoes play in the early atmosphere?
A
They released gases that contributed to the formation of the early atmosphere
B
They formed the Earth's oceans
C
They created the first plants and animals
D
They caused the extinction of dinosaurs
Slide 7 - Quiz
Slide 8 - Diapositive
Define global warming?
Slide 9 - Question ouverte
Slide 10 - Diapositive
Slide 11 - Diapositive
Slide 12 - Vidéo
Put the stages of global warming in order
Step 1
Step 2
Step 3
Step 4
Radiation from the sun enters the earths atmosphere
the earth absorbs short wave radiation and warms up. The earth radiates infra red radiation
Some of the infrared radiation is absorbed by greenhouse gases in the atmosphere and reflected back
The atmosphere warms up
