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Biogeochemical Cycles Questions - All Grades

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Grade 10 Biogeochemical Cycles
Nutrients move through an ecosystem in
  1. energy pyramids.
  2. ecological pyramids.
  3. biogeochemical cycles.
  4. the water cycle.
Grade 10 Biogeochemical Cycles
How do living things contribute to the water cycle?
  1. evaporation
  2. condensation
  3. precipitation
  4. transpiration
Grade 7 Biogeochemical Cycles
Lightning and soil bacteria are both involved in the production of                  .
  1. nitrates
  2. potassium
  3. phosphates
  4. none of the above
Grade 9 Biogeochemical Cycles
Organisms that eat the bodies of dead organisms are called                .
  1. carnivores
  2. detritivores
  3. heterotrophs
  4. omnivores
Grade 9 Biogeochemical Cycles
Where are all the elements found?
  1. in ecology
  2. in the biosphere
  3. in biochemical pathways
  4. in the biogeochemical cycles
Grade 9 Biogeochemical Cycles
In the water cycle, how does water leave the atmosphere and return to Earth's surface?
  1. condensation
  2. evaporation
  3. precipitation
  4. transpiration
Grade 11 Biogeochemical Cycles
What is the best definition of global warming?
  1. Earth warming on all sides
  2. an increase in the average temperature worldwide caused by the greenhouse effect
  3. people around the world feeling warm all over
  4. Earth warming because of the many fires in the jungle
Grade 5 Biogeochemical Cycles
Greenhouse gases
  1. are produced by plants in a greenhouse.
  2. trap heat in the atmosphere.
  3. cool Earth's temperature.
  4. are used to cook food.
Grade 10 Biogeochemical Cycles
Choose the correct order of events in the nitrogen cycle.
  1. Nitrogen is in air, bacteria fix nitrogen, animals get nitrogen from plants, animals die and decompose.
  2. Animals die and decompose, animals get nitrogen from plants, nitrogen is in air, bacteria fix nitrogen.
  3. Bacteria fix nitrogen, nitrogen is in air, animals get nitrogen, animals die and decompose.
  4. Nitrogen is in air, animals get nitrogen from plants, bacteria fix nitrogen, animals die and decompose.
Grade 9 Biogeochemical Cycles
In which cycle does carbon dioxide play a large role?
  1. carbon
  2. nitrogen
  3. phosphorus
  4. water
Grade 9 Biogeochemical Cycles
The two main processes of the oxygen-carbon cycle are
  1. photosynthesis and carbonation.
  2. transpiration and photosynthesis.
  3. cellular respiration and transpiration.
  4. cellular respiration and photosynthesis.
Grade 9 Biogeochemical Cycles
Which biogeochemical cycle is illustrated?
Carbon Cycle With Text Labels
  1. carbon
  2. nitrogen
  3. phosphorus
  4. water
Grade 9 Biogeochemical Cycles
Which is not one of the four biogeochemical cycles?
  1. carbon
  2. nitrogen
  3. oxygen
  4. phosphorus
Grade 9 Biogeochemical Cycles
What are two ways in which nitrogen fixation happens?
  1. bacteria and water
  2. water and lightning
  3. bacteria and lightning
  4. bacteria and producers
Grade 5 Biogeochemical Cycles
For what is nitrogen an essential substance?
  1. photosynthesis
  2. food webs
  3. rainfall
  4. life
Grade 10 Biogeochemical Cycles
Which biogeochemical cycle does NOT include a major path in which the substance cycles through the atmosphere?
  1. nitrogen cycle
  2. phosphorus cycle
  3. water cycle
  4. carbon cycle
Grade 9 Biogeochemical Cycles
The biogeochemical cycles do NOT include
  1. cycles caused by human activity.
  2. geological processes.
  3. the destruction of nutrients.
  4. chemical and physical processes.
Grade 10 Biogeochemical Cycles
Choose the correct order of events in the carbon cycle.
  1. Respiration by living things releases carbon dioxide into the air, animals get carbon from plants, plants get carbon dioxide from the air.
  2. Plants get carbon dioxide from the air, respiration by living things releases carbon dioxide into the air, animals get carbon from plants.
  3. Plants get carbon dioxide from air, animals get carbon from plants, respiration by living things releases carbon dioxide into the air.
  4. Animals get carbon from plants, plants get carbon dioxide from the air, respiration by living things releases carbon dioxide into the air.
Grade 10 Biogeochemical Cycles
An increase in the greenhouse effect causes an increase in
  1. temperature.
  2. oxygen and carbon dioxide.
  3. water cycle.
  4. carbon dioxide.
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