Introduction
Introduction
Have you ever noticed that the water level along the shore changes during the day? Sometimes the sea appears to move closer to the land, while at other times the water moves farther away.
These regular changes are called ocean tides. In this WebQuest, you will explore reliable online resources to learn what tides are, why they happen, and how the Moon, Sun, and Earth are related to tidal changes.
As you explore the resources, think like a young scientist. Use the information you find to explain the pattern of ocean tides and communicate your understanding to others.
Task
Task
Your task is to investigate ocean tides and create a one-page digital infographic or short presentation explaining how tides occur.
Your final product should include:
- A definition of ocean tides.
- An explanation of how the Moon affects tides.
- The role of the Sun in tides.
- The difference between high tide and low tide.
- A simple diagram showing the Earth, Moon, and tidal bulges.
- One interesting fact about ocean tides.
Your output should be clear, organized, accurate, and easy for another Grade 8 student to understand.
Process
Process
Step 1 – Explore
Visit the online resources provided in the Resources section.
Read or watch the materials about ocean tides, the Moon, and the relationship among the Earth, Moon, and Sun.
Step 2 – Gather Information
Answer these questions while exploring:
- What is an ocean tide?
- What causes tides?
- How does the Moon affect the ocean?
- How does the Sun affect tides?
- What is the difference between high tide and low tide?
Write down the important information that you find.
Step 3 – Analyze
Compare high tide and low tide.
Identify how the position of the Moon and Sun affects tidal patterns.
Organize your information so that you can explain the process clearly.
Step 4 – Create
Create a one-page digital infographic or a short presentation entitled:
“Ocean Tides: How and Why Do They Happen?”
Include the required information and a simple diagram showing the relationship among the Earth, Moon, and Sun.
Step 5 – Check Your Work
Before submitting your work, check the following:
- Is the information accurate?
- Did you answer all the required questions?
- Is the diagram understandable?
- Did you use the resources provided?
- Is your work organized and easy to read?
Step 6 – Share
Present your infographic or presentation to the class.
After presenting, briefly explain what you learned about ocean tides and what information you found most interesting.
Evaluation
Evaluation
| Criteria | 4 – Excellent | 3 – Good | 2 – Fair | 1 – Needs Improvement |
|---|---|---|---|---|
| Accuracy of Content | Information is accurate and complete | Information is mostly accurate | Some information is incomplete or unclear | Information contains several errors |
| Understanding of Tides | Clearly explains causes, high tide, and low tide | Explains most concepts correctly | Explanation is partly correct | Shows limited understanding |
| Diagram | Diagram is clear, complete, and correctly labeled | Diagram is clear with minor errors | Diagram is incomplete | Diagram is unclear or missing |
| Use of Resources | Uses the provided resources effectively | Uses the resources appropriately | Uses limited information from resources | Does not properly use the resources |
| Organization and Presentation | Very clear, organized, and engaging | Clear and organized | Some parts are difficult to follow | Disorganized and difficult to understand |
| Participation | Participates actively and explains learning clearly | Participates well | Participates with some assistance | Shows limited participation |
Total: 24 points
Conclusion
Conclusion
You have completed your investigation of ocean tides.
Through this WebQuest, you explored how ocean tides occur and how the Moon and Sun are connected to changes in sea level. You also used online educational resources to gather information, analyze what you discovered, and communicate your understanding through an infographic or presentation.
Reflect on the following questions:
1. What is the most important thing you learned about ocean tides?
2. How did the online resources help you understand the topic?
3. Why is it important to understand natural phenomena such as ocean tides?
Your learning does not end with this WebQuest. Continue asking questions and exploring how the Earth, Moon, and Sun interact.
Credits
Resources
Use the following educational resources to gather information:
NASA – Earth and Moon
https://science.nasa.gov/moon/
NOAA Ocean Service – Tides and Currents
https://oceanservice.noaa.gov/education/tutorial_tides/
National Geographic – Oceans
https://education.nationalgeographic.org/