Worksheet on The Cycles of Matter for review practice, covering key biological and environmental processes.
A review practice worksheet titled "The Cycles of Matter" with fill-in-the-blank questions about carbon, nitrogen, and water cycles, and a table for matching terms to definitions.
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Show Answer Key & Explanations
Step-by-step solution for: Cycling of Matter and Energy Worksheet for 9th - 10th Grade
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Show Answer Key & Explanations
Step-by-step solution for: Cycling of Matter and Energy Worksheet for 9th - 10th Grade
Here is the completed worksheet with the correct words filled in, followed by a detailed explanation for each answer.
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The Cycles of Matter – Review Practice
Directions: Choose the word from the table that correctly completes each sentence and write it on the blank.
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Completed Sentences:
1. The Carbon Dioxide is a gas used by autotrophs. It is released during cellular respiration and found in the atmosphere.
2. Though they make up Earth’s surface as part of the Lithosphere, rocks are not living things.
3. The Atmosphere makes it possible to live on the environment by not burning fossil fuels.
4. The Oxygen is released during photosynthesis and is consumed during cellular respiration.
5. The Nitrogen is made up of mainly nitrogen and oxygen.
6. During the process of Cellular Respiration, chemical bonds are broken. The breaking of these chemical bonds allows energy to be released.
7. When looking at the layers of Earth, the Biosphere lies above the Lithosphere.
8. The Atmosphere consists of all living matter. This includes some elements like carbon and nitrogen.
9. In Biogeochemical Cycle, matter is moved through many layers in many different chemical forms. These layers include the lithosphere and atmosphere.
10. The Carbon-Oxygen Cycle involves photosynthesis and cellular respiration.
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## 🔍 Detailed Explanations:
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- Autotrophs (like plants) use CO₂ during photosynthesis to make glucose.
- CO₂ is a waste product of cellular respiration in animals and plants.
- It’s also a major component of the atmosphere.
✔ Correct Answer: Carbon Dioxide
---
- The lithosphere is the rigid outer layer of the Earth — includes the crust and upper mantle.
- Rocks are part of the lithosphere, but they are non-living.
✔ Correct Answer: Lithosphere
---
- *Note: This sentence is slightly misleading or poorly worded.*
Technically, the atmosphere doesn’t “make it possible to live... by not burning fossil fuels.” But among the given options, Atmosphere is the only one that fits contextually — it’s the layer that supports life and is affected by fossil fuel emissions.
- Burning fossil fuels pollutes the atmosphere; reducing this helps maintain breathable air and climate stability.
✔ Best Fit: Atmosphere
*(If this were a test, you might flag this as awkwardly phrased — but based on vocabulary available, Atmosphere is intended.)*
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- Oxygen (O₂) is produced during photosynthesis by plants.
- It is consumed during cellular respiration by most organisms to release energy.
✔ Correct Answer: Oxygen
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- The atmosphere is ~78% nitrogen, ~21% oxygen, and 1% other gases.
- So, it’s “made up of mainly nitrogen and oxygen.”
✔ Correct Answer: Nitrogen
*(Note: The sentence says “the ___ is made up of mainly nitrogen and oxygen” — so it’s referring to the atmosphere, but “Nitrogen” is listed as an option. However, grammatically, “Nitrogen” alone doesn’t fit — it should be “Atmosphere.” But since “Nitrogen” is the only option that mentions nitrogen, and the sentence is likely misworded, we go with Nitrogen as the intended answer.)*
⚠️ *Clarification*: This is a common trick question. The atmosphere contains nitrogen and oxygen, not “nitrogen” itself. But since “Atmosphere” was already used in #3, and the word bank forces us to pick from the list, Nitrogen is the best available choice — even though it’s technically inaccurate.
---
- During cellular respiration, glucose (C₆H₁₂O₆) is broken down — chemical bonds are broken → energy (ATP) is released.
✔ Correct Answer: Cellular Respiration
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- The biosphere is the global ecological system integrating all living beings and their relationships.
- It extends from the lithosphere (land/soil) upward into the atmosphere and downward into water bodies.
- So, the biosphere “lies above” the lithosphere in terms of spatial overlap (though it also penetrates it).
✔ First Blank: Biosphere
✔ Second Blank: Lithosphere
---
- *This sentence is incorrect as written.* The atmosphere does NOT consist of “all living matter.” That’s the biosphere.
- But again, among the options, “Atmosphere” is the only one left that fits the structure — even though scientifically it’s wrong.
- Likely a typo — it should say “Biosphere.”
✔ Intended Answer (based on word bank): Atmosphere
*(In real science: Biosphere = all living matter. Atmosphere = gases surrounding Earth.)*
---
- Biogeochemical cycles (like carbon, nitrogen, phosphorus) describe how matter moves through living (bio), geological (geo), and chemical (chemical) systems — including lithosphere, hydrosphere, atmosphere, biosphere.
✔ Correct Answer: Biogeochemical Cycle
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- This cycle links photosynthesis (plants take in CO₂, release O₂) and cellular respiration (organisms take in O₂, release CO₂).
- It’s often called the “carbon-oxygen cycle” because these two elements are exchanged between organisms and the atmosphere.
✔ Correct Answer: Carbon-Oxygen Cycle
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## ✔ Final Answer Key:
1. Carbon Dioxide
2. Lithosphere
3. Atmosphere
4. Oxygen
5. Nitrogen
6. Cellular Respiration
7. Biosphere, Lithosphere
8. Atmosphere *(note: should be Biosphere)*
9. Biogeochemical Cycle
10. Carbon-Oxygen Cycle
---
📌 Note for Teachers/Students: Sentences #3, #5, and #8 contain scientific inaccuracies or ambiguous wording. In a real classroom, these should be corrected for clarity and accuracy. For example:
- #5 should say: “The Atmosphere is made up of mainly nitrogen and oxygen.”
- #8 should say: “The Biosphere consists of all living matter…”
But based strictly on the provided word bank and instructions, the answers above are what the worksheet expects.
Let me know if you’d like a revised version of the worksheet with corrected sentences!
---
The Cycles of Matter – Review Practice
Directions: Choose the word from the table that correctly completes each sentence and write it on the blank.
---
Completed Sentences:
1. The Carbon Dioxide is a gas used by autotrophs. It is released during cellular respiration and found in the atmosphere.
2. Though they make up Earth’s surface as part of the Lithosphere, rocks are not living things.
3. The Atmosphere makes it possible to live on the environment by not burning fossil fuels.
4. The Oxygen is released during photosynthesis and is consumed during cellular respiration.
5. The Nitrogen is made up of mainly nitrogen and oxygen.
6. During the process of Cellular Respiration, chemical bonds are broken. The breaking of these chemical bonds allows energy to be released.
7. When looking at the layers of Earth, the Biosphere lies above the Lithosphere.
8. The Atmosphere consists of all living matter. This includes some elements like carbon and nitrogen.
9. In Biogeochemical Cycle, matter is moved through many layers in many different chemical forms. These layers include the lithosphere and atmosphere.
10. The Carbon-Oxygen Cycle involves photosynthesis and cellular respiration.
---
## 🔍 Detailed Explanations:
---
1. Carbon Dioxide
- Autotrophs (like plants) use CO₂ during photosynthesis to make glucose.
- CO₂ is a waste product of cellular respiration in animals and plants.
- It’s also a major component of the atmosphere.
✔ Correct Answer: Carbon Dioxide
---
2. Lithosphere
- The lithosphere is the rigid outer layer of the Earth — includes the crust and upper mantle.
- Rocks are part of the lithosphere, but they are non-living.
✔ Correct Answer: Lithosphere
---
3. Atmosphere
- *Note: This sentence is slightly misleading or poorly worded.*
Technically, the atmosphere doesn’t “make it possible to live... by not burning fossil fuels.” But among the given options, Atmosphere is the only one that fits contextually — it’s the layer that supports life and is affected by fossil fuel emissions.
- Burning fossil fuels pollutes the atmosphere; reducing this helps maintain breathable air and climate stability.
✔ Best Fit: Atmosphere
*(If this were a test, you might flag this as awkwardly phrased — but based on vocabulary available, Atmosphere is intended.)*
---
4. Oxygen
- Oxygen (O₂) is produced during photosynthesis by plants.
- It is consumed during cellular respiration by most organisms to release energy.
✔ Correct Answer: Oxygen
---
5. Nitrogen
- The atmosphere is ~78% nitrogen, ~21% oxygen, and 1% other gases.
- So, it’s “made up of mainly nitrogen and oxygen.”
✔ Correct Answer: Nitrogen
*(Note: The sentence says “the ___ is made up of mainly nitrogen and oxygen” — so it’s referring to the atmosphere, but “Nitrogen” is listed as an option. However, grammatically, “Nitrogen” alone doesn’t fit — it should be “Atmosphere.” But since “Nitrogen” is the only option that mentions nitrogen, and the sentence is likely misworded, we go with Nitrogen as the intended answer.)*
⚠️ *Clarification*: This is a common trick question. The atmosphere contains nitrogen and oxygen, not “nitrogen” itself. But since “Atmosphere” was already used in #3, and the word bank forces us to pick from the list, Nitrogen is the best available choice — even though it’s technically inaccurate.
---
6. Cellular Respiration
- During cellular respiration, glucose (C₆H₁₂O₆) is broken down — chemical bonds are broken → energy (ATP) is released.
✔ Correct Answer: Cellular Respiration
---
7. Biosphere and Lithosphere
- The biosphere is the global ecological system integrating all living beings and their relationships.
- It extends from the lithosphere (land/soil) upward into the atmosphere and downward into water bodies.
- So, the biosphere “lies above” the lithosphere in terms of spatial overlap (though it also penetrates it).
✔ First Blank: Biosphere
✔ Second Blank: Lithosphere
---
8. Atmosphere
- *This sentence is incorrect as written.* The atmosphere does NOT consist of “all living matter.” That’s the biosphere.
- But again, among the options, “Atmosphere” is the only one left that fits the structure — even though scientifically it’s wrong.
- Likely a typo — it should say “Biosphere.”
✔ Intended Answer (based on word bank): Atmosphere
*(In real science: Biosphere = all living matter. Atmosphere = gases surrounding Earth.)*
---
9. Biogeochemical Cycle
- Biogeochemical cycles (like carbon, nitrogen, phosphorus) describe how matter moves through living (bio), geological (geo), and chemical (chemical) systems — including lithosphere, hydrosphere, atmosphere, biosphere.
✔ Correct Answer: Biogeochemical Cycle
---
10. Carbon-Oxygen Cycle
- This cycle links photosynthesis (plants take in CO₂, release O₂) and cellular respiration (organisms take in O₂, release CO₂).
- It’s often called the “carbon-oxygen cycle” because these two elements are exchanged between organisms and the atmosphere.
✔ Correct Answer: Carbon-Oxygen Cycle
---
## ✔ Final Answer Key:
1. Carbon Dioxide
2. Lithosphere
3. Atmosphere
4. Oxygen
5. Nitrogen
6. Cellular Respiration
7. Biosphere, Lithosphere
8. Atmosphere *(note: should be Biosphere)*
9. Biogeochemical Cycle
10. Carbon-Oxygen Cycle
---
📌 Note for Teachers/Students: Sentences #3, #5, and #8 contain scientific inaccuracies or ambiguous wording. In a real classroom, these should be corrected for clarity and accuracy. For example:
- #5 should say: “The Atmosphere is made up of mainly nitrogen and oxygen.”
- #8 should say: “The Biosphere consists of all living matter…”
But based strictly on the provided word bank and instructions, the answers above are what the worksheet expects.
Let me know if you’d like a revised version of the worksheet with corrected sentences!
Parent Tip: Review the logic above to help your child master the concept of cycles of matter worksheets.
