biologi-c9.2 Endangered Ecosystem Greenhouse Effect

Endangered EcosystemGreenhouse effect

GREENHOUSE EFFECT The phenomenon of over warming of the Earth due to the increasing amount of greenhouse gases

GREENHOUSE GASESCarbon DioxideChlorofluorocarbonsMethaneNitrous OxideOzone

GLOBAL WARMING The increase in the global temperature cause by the greenhouse effect

GREENHOUSE

Energy from the Sun reaches the Earth through radiation.Radiation is absorbed by the Earth to warm the surface of sea and land.

INFRARED RAYS

When the earth warm, it radiates its own rays heat called infrared raysInfrared rays is emitted back to the spaceGreenhouse gases prevent radiation from escaping to the space and allow the earth to be the right temperature of life

GAMES

CAUSES AND EFFECTS OF GREENHOUSE EFFECT

DEFORESTATION

One effect people have on greenhouse gases is cutting down trees

When forest are cut and burned a carbon in trees is transformed into a gas called carbon dioxide

EFFECTS OF GLOBAL WARMINGMelting of ice in the North pole and souh poleFloods Change in climates zonesLand becomes dry and no Fertile

EMISSIONS

Increase carbon dioxide in the air by burning fuels called fossil fuels

Whenever fossil fuels are burned, carbon dioxide is released from the fuel into the air

ACTIVITYDivide into two group. Discuss the causes and effects of global warming with your groups. Present it in your creativity ways.

CONCLUSION

Cutting down forest and burning fossil fuels create more CO2 in the air More greenhouse gases, more heat is radiated towards the Earths surface. So, produce global warming.

HOMEWORK1. Find out an article about greenhouse effect and global warming. Summarize it in your own word.2. Read thinning of the ozone layer for our lesson next week.