coal and petroleum
Texto del Guión Gráfico
- hi my name is Arya today in my school mam is going to teach about an interesting lesson about coal and petroleum
- good morning mam can i tell what u are going to teach mam
- mam coal and petroleum
- hi childrens good morning anybody knows what lesson i am going to teach
- good arya
- yes arya
- about coal ,petrol and natural gas mam
- what is that mam
- what is fossil fuel mam
- fossil fuel
- arya tell what topic we are going to learn
- with are fromed from the dead reamains of living organisms is called fossil fuel and the
- ok but u left one
- about 300 million years ago the earth had dense foresy in low lying wetland areas.due to natural processes,like flooding these forest got buried under the soil .as more soil deposited over them ,they were compressed.the temperature also rose as they sank deeper and deeper.under high pressure and high temperature , dead plant dot slowly coverted into coal this process called carbonisation . it contains more carbon
- yes mam
- anybody know about story of coal
- ok tell arya
- good arya
- coke and coal tar mam
- ok what are the products of coal arya tell
- good arya
- coke-it is a tough,porous and black substance.it is an almost pure form of carbon coke is used to manufacture of steel .coal tar - it is a black , thick liquid with an unpleasant smell.it is a mixture of about 200 substances . produvts obtained from coal tar are used as starting materials for manufacturing various substances used in everyday life and industry
- what is coke and coal tar arya
- good arya ok childrens in next class we will learn about petrol and natural gas ,bye
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