Earths Atmosphere Flashcards
What is the carbon cycle ?
When carbon dioxide is burned into the atmosphere and then regulated by photosynthesis
What is the carbon cycle regulated by ?
Photosynthesis
What is the word equation for photosynthesis?
Carbon dioxide + water -> oxygen + glucose
What was the early earth considered to be similar to ?
Mars
True or false : since 4 billion years ago carbon dioxide has decreased and oxygen has increased
True
How are fossil fuels produced ?
Decomposition of plants , animals and electricity
Natural gases , coal , combustion , petroleum, crude oil etc .
What is decomposition ?
the process by which the dead and decaying organisms are broken down into smaller matter by decomposers like worms, fungi and bacteria.
What is combustion ?
The scientific word for burning
Carbon dioxide in word and symbol :
Carbon dioxide , CO2.
Word equations for combustion
Petrol + oxygen —> carbon dioxide + water
Methane + oxygen —> carbon dioxide + water
(Fuel , oxygen and heat )
What’s displacement ?
When a metal and metal compound are mixed together , a displacement reaction can take place .
What is the number 1 source in combustion
Oxygen
What will be the product of the following reactants:
Lead +oxide+iron
Iron oxide + lead
What will be the products of the following reactants:
Zinc+oxide+magnesium
Magnesium +Zinc oxide
