Cycles worksheet, Lecture notes of Fossil Fuels

Please answer the following using the words in the text box. Carbon Cycle. 1. Plants use CO2 in the process of. to make ______ and oxygen. 2. Animals use ...

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2021/2022

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Integrated Science Name ____________________________
Cycles worksheet
Please answer the following using the words in the text box.
Carbon Cycle
1. Plants use CO2 in the process of ___________________ to make ___________ and
oxygen.
2. Animals use oxygen in the process of _______________ and make more CO2.
3. The ____________ is the main regulator of CO2 in the atmosphere because CO2 dissolves
easily in it.
4. In the past, huge deposits of carbon were stored as dead plants and animals __________.
5. Today these deposits are burned as fossil fuels, which include _____________,
_______________, and ______________.
6. More CO2 is released in the atmosphere today than in the past because of _________
___________________ .
7. Another natural source for CO2 is __________________.
8. Too much CO2 in the atmosphere may be responsible for the _______________ effect.
9. Write the equation for photosynthesis.
10. Draw a simple diagram of the Carbon Cycle using the words in the text box above.
Coal Oil Natural Gas burning of fossil fuels volcanoes
Photosynthesis Respiration ocean sugar Greenhouse decayed
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Integrated Science Name ____________________________

Cycles worksheet

Please answer the following using the words in the text box. Carbon Cycle

  1. Plants use CO 2 in the process of ___________________ to make ___________ and oxygen.
  2. Animals use oxygen in the process of _______________ and make more CO 2.
  3. The ____________ is the main regulator of CO 2 in the atmosphere because CO 2 dissolves easily in it.
  4. In the past, huge deposits of carbon were stored as dead plants and animals __________.
  5. Today these deposits are burned as fossil fuels, which include _____________, _______________, and ______________.
  6. More CO 2 is released in the atmosphere today than in the past because of _________ ___________________.
  7. Another natural source for CO 2 is __________________.
  8. Too much CO 2 in the atmosphere may be responsible for the _______________ effect.
  9. Write the equation for photosynthesis.
  10. Draw a simple diagram of the Carbon Cycle using the words in the text box above. Coal Oil Natural Gas burning of fossil fuels volcanoes Photosynthesis Respiration ocean sugar Greenhouse decayed

Oxygen Cycle

  1. Plants release 430-470 billion tons of oxygen during process of _________________.
  2. Atmospheric oxygen in the form of ___________ provides protection from harmful ultraviolet rays.
  3. Oxygen is found everywhere on Earth, from Earth’s _____________ (rocks) to the ______________ where it is dissolved.
  4. Oxygen is vital for ________________ by animals, a process which produces CO 2 .and water.
  5. Oxygen is also necessary for the decomposition of ______________ into other elements necessary for life.
  6. Write the equation for respiration.
  7. Draw a diagram of the Oxygen Cycle using the words in the text box. Sulfur Cycle
  8. Sulfur in a pure elemental state is most often found near active ________________.
  9. Sulfur is found in all of Earth’s environments, including the air, the hydrosphere (________), the biosphere (living part), and the lithosphere (____________or ________). Photosynthesis Ozone Waste Crust Oceans Respiration Water Minerals Volcanoes minerals Industry Ground or rocks Rain pollution matches H 2 S insecticide sulfuric acid

Nitrogen Cycle

  1. Our atmosphere is ______ nitrogen gas.
  2. Animals and plants cannot directly use all the nitrogen found in our ________________.
  3. Only special bacteria can directly use nitrogen in our atmosphere and “fix” it so other organisms can benefit. These bacteria are called ____________-_________ bacteria.
  4. Higher organisms use nitrogen to make their _____________.
  5. Animal waste decay by the action of bacteria which create _____________and __________ products rich in nitrogen, and useful for plants to use again.
  6. ______________ bacteria in the soil can break down the ammonia into the gaseous form of nitrogen, which is not available for use by plants or animals.
  7. In another part of the cycle, animals eat ____________ containing nitrogen, which is again returned to the soil by animal _____________ or decaying ____________ and ___________.
  8. Draw a diagram of the Nitrogen cycle using the words in the text box. Atmosphere 78% ammonia proteins denitrificating Nitrate nitrogen-fixing plants animals waste plants