The oxygen cycle in nature, highlighting photosynthesis and respiration processes.
Diagram illustrating the oxygen cycle, showing plants producing oxygen through photosynthesis, animals and plants breathing in oxygen, and carbon dioxide being released back into the atmosphere.
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Step-by-step solution for: ระดับชั้น G.5 Subject : Science, Carbon dioxide and Oxygen cycle (Teacher Seda ผู้สอน) Worksheet 2
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Show Answer Key & Explanations
Step-by-step solution for: ระดับชั้น G.5 Subject : Science, Carbon dioxide and Oxygen cycle (Teacher Seda ผู้สอน) Worksheet 2
The image illustrates the Oxygen Cycle, which is a fundamental process in nature that involves the exchange of oxygen and carbon dioxide between living organisms and the atmosphere. Let's break down the key components and explain how the cycle works:
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1. Plants and Photosynthesis:
- Plants (represented by the tree in the image) use sunlight, water, and carbon dioxide to produce glucose (food) and release oxygen as a byproduct.
- This process is called photosynthesis and can be summarized by the following equation:
\[
6CO_2 + 6H_2O + \text{Sunlight} \rightarrow C_6H_{12}O_6 + 6O_2
\]
- The oxygen produced by plants is released into the atmosphere.
2. Animals and Respiration:
- Animals (represented by the cow in the image) breathe in oxygen from the atmosphere and exhale carbon dioxide.
- This process is called respiration and can be summarized by the following equation:
\[
C_6H_{12}O_6 + 6O_2 \rightarrow 6CO_2 + 6H_2O + \text{Energy}
\]
- The carbon dioxide exhaled by animals is used by plants during photosynthesis.
3. Atmosphere:
- The atmosphere acts as a medium for the exchange of gases. Oxygen produced by plants is absorbed by animals, and carbon dioxide produced by animals is absorbed by plants.
4. Carbon Dioxide:
- Carbon dioxide is a crucial component of the cycle. It is taken up by plants during photosynthesis and released by animals during respiration.
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1. Photosynthesis:
- Plants absorb carbon dioxide from the atmosphere and use sunlight to convert it into oxygen through photosynthesis.
- The oxygen produced is released back into the atmosphere.
2. Respiration:
- Animals breathe in oxygen from the atmosphere and use it to produce energy through respiration.
- During this process, animals exhale carbon dioxide, which is then absorbed by plants.
3. Cycle Continues:
- The oxygen released by plants is used by animals, and the carbon dioxide released by animals is used by plants. This continuous exchange maintains the balance of oxygen and carbon dioxide in the atmosphere.
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- Life Support: The oxygen cycle ensures that there is a constant supply of oxygen in the atmosphere, which is essential for the survival of aerobic organisms (organisms that require oxygen to live).
- Balance: It helps maintain the balance of gases in the atmosphere, preventing an excess buildup of carbon dioxide or depletion of oxygen.
- Ecosystem Health: A healthy oxygen cycle supports the overall health of ecosystems by ensuring that both producers (plants) and consumers (animals) have the necessary resources to thrive.
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The Oxygen Cycle is a vital ecological process where plants produce oxygen through photosynthesis, which is then used by animals during respiration. In turn, animals release carbon dioxide, which is utilized by plants for photosynthesis. This continuous cycle ensures the availability of oxygen for life on Earth and regulates the levels of carbon dioxide in the atmosphere.
Final Answer:
\[
\boxed{\text{The Oxygen Cycle involves the production of oxygen by plants through photosynthesis and its consumption by animals through respiration, maintaining a balanced exchange of gases in the atmosphere.}}
\]
---
Key Components of the Oxygen Cycle:
1. Plants and Photosynthesis:
- Plants (represented by the tree in the image) use sunlight, water, and carbon dioxide to produce glucose (food) and release oxygen as a byproduct.
- This process is called photosynthesis and can be summarized by the following equation:
\[
6CO_2 + 6H_2O + \text{Sunlight} \rightarrow C_6H_{12}O_6 + 6O_2
\]
- The oxygen produced by plants is released into the atmosphere.
2. Animals and Respiration:
- Animals (represented by the cow in the image) breathe in oxygen from the atmosphere and exhale carbon dioxide.
- This process is called respiration and can be summarized by the following equation:
\[
C_6H_{12}O_6 + 6O_2 \rightarrow 6CO_2 + 6H_2O + \text{Energy}
\]
- The carbon dioxide exhaled by animals is used by plants during photosynthesis.
3. Atmosphere:
- The atmosphere acts as a medium for the exchange of gases. Oxygen produced by plants is absorbed by animals, and carbon dioxide produced by animals is absorbed by plants.
4. Carbon Dioxide:
- Carbon dioxide is a crucial component of the cycle. It is taken up by plants during photosynthesis and released by animals during respiration.
---
Flow of the Oxygen Cycle:
1. Photosynthesis:
- Plants absorb carbon dioxide from the atmosphere and use sunlight to convert it into oxygen through photosynthesis.
- The oxygen produced is released back into the atmosphere.
2. Respiration:
- Animals breathe in oxygen from the atmosphere and use it to produce energy through respiration.
- During this process, animals exhale carbon dioxide, which is then absorbed by plants.
3. Cycle Continues:
- The oxygen released by plants is used by animals, and the carbon dioxide released by animals is used by plants. This continuous exchange maintains the balance of oxygen and carbon dioxide in the atmosphere.
---
Why is the Oxygen Cycle Important?
- Life Support: The oxygen cycle ensures that there is a constant supply of oxygen in the atmosphere, which is essential for the survival of aerobic organisms (organisms that require oxygen to live).
- Balance: It helps maintain the balance of gases in the atmosphere, preventing an excess buildup of carbon dioxide or depletion of oxygen.
- Ecosystem Health: A healthy oxygen cycle supports the overall health of ecosystems by ensuring that both producers (plants) and consumers (animals) have the necessary resources to thrive.
---
Summary:
The Oxygen Cycle is a vital ecological process where plants produce oxygen through photosynthesis, which is then used by animals during respiration. In turn, animals release carbon dioxide, which is utilized by plants for photosynthesis. This continuous cycle ensures the availability of oxygen for life on Earth and regulates the levels of carbon dioxide in the atmosphere.
Final Answer:
\[
\boxed{\text{The Oxygen Cycle involves the production of oxygen by plants through photosynthesis and its consumption by animals through respiration, maintaining a balanced exchange of gases in the atmosphere.}}
\]
Parent Tip: Review the logic above to help your child master the concept of carbon dioxide oxygen cycle worksheet.
