Objective

By the end of this lesson, the student will be able to investigate regular changes caused by interactions between the Earth and the Sun, as well as changes to the Earth's surface.

Materials and Prep

• Pen and paper
• Access to a computer or library for research
• Outdoor space for observations (if possible)

Activities

1. Research the Earth-Sun relationship:

   Have the student use a computer or visit a library to research and gather information about the interactions between the Earth and the Sun. They should focus on understanding how these interactions cause regular changes, such as day and night, seasons, and the length of a day.

2. Observe and record shadows:

   Take the student outside during different times of the day and ask them to observe their own shadow. Have them draw and label the length and direction of their shadow at various times (e.g., morning, noon, afternoon). Discuss how the movement and length of shadows change throughout the day due to the position of the Sun.

3. Investigate the Earth's surface changes:

   Encourage the student to explore different areas of their local environment (e.g., backyard, park, nearby beach) and observe any changes they notice. They can document these changes through drawings, photographs, or written descriptions. Discuss what factors may have caused these changes, such as weathering, erosion, or human activities.

Talking Points

• "The Earth and the Sun have a special relationship. They interact in various ways, causing regular changes on our planet."
• "One of the regular changes caused by the Earth-Sun interaction is the rotation of the Earth, leading to day and night. When one side of the Earth faces the Sun, it is daytime, while the other side experiences nighttime."
• "The Earth's tilt is another important factor that causes changes in seasons. When a hemisphere is tilted towards the Sun, it experiences summer, while the opposite hemisphere experiences winter."
• "Shadows are created when an object blocks the path of light. The length and direction of shadows change throughout the day due to the Sun's position in the sky."
• "The Earth's surface is constantly changing due to various factors. Weathering, erosion, and human activities can all contribute to these changes."
• "By observing and documenting changes in our environment, we can better understand the impact of natural processes and human actions on the Earth's surface."