Here are the answers to the worksheet questions based on the word banks provided.
Oxygen Cycle
1. Plants release 430-470 billion tons of oxygen during process of
Photosynthesis.
2. Atmospheric oxygen in the form of
Ozone provides protection from harmful ultraviolet rays.
3. Oxygen is found everywhere on Earth, from Earth’s
Crust (rocks) to the
Oceans where it is dissolved.
4. Oxygen is vital for
Respiration by animals, a process which produces CO₂ and water.
5. Oxygen is also necessary for the decomposition of
Waste into other elements necessary for life.
6.
Equation for respiration:
Glucose + Oxygen $\rightarrow$ Carbon Dioxide + Water + Energy
*(Chemical formula: $C_6H_{12}O_6 + 6O_2 \rightarrow 6CO_2 + 6H_2O + Energy$)*
7.
Diagram Description:
Since I cannot draw on the page, here is how you should arrange the words to show the cycle:
* Draw an arrow from
Photosynthesis to
Respiration (label this arrow "Oxygen").
* Draw an arrow from
Respiration back to
Photosynthesis (label this arrow "Carbon Dioxide").
* Draw arrows connecting
Oceans and
Crust to show that oxygen dissolves in water and is trapped in rocks.
* Show
Waste decomposing (using oxygen) and returning nutrients to the soil/plants.
***
Sulfur Cycle
1. Sulfur in a pure elemental state is most often found near active
Volcanoes.
2. Sulfur is found in all of Earth’s environments, including the air, the hydrosphere (
Water), the biosphere (living part), and the lithosphere (
Ground or rocks or
Minerals).
*(Note: For question 2, "Water" fits best for hydrosphere. For lithosphere, both "Ground or rocks" and "Minerals" fit, but "Ground or rocks" is a direct description of the lithosphere layer).*
Final Answer:
Oxygen Cycle Answers:
1. Photosynthesis
2. Ozone
3. Crust; Oceans
4. Respiration
5. Waste
6. Glucose + Oxygen → Carbon Dioxide + Water + Energy
Sulfur Cycle Answers:
1. Volcanoes
2. Water; Ground or rocks (or Minerals)
Parent Tip: Review the logic above to help your child master the concept of integrated science cycles worksheet.
