This model provides a visual representation of the gravitational force and the concept of orbits. When the smaller ball is set in motion, it simulates the effect of gravitational attraction between celestial bodies in space.
Creating an Earth gravitational force working model using thermocol balls, magnets, thread, and cardboard can be an engaging science project. Here’s a step-by-step guide to help you build your model:
Materials needed:
- Large thermocol ball (representing Earth)
- Small thermocol ball (representing a smaller object)
- Two strong magnets
- Thread
- Cardboard
- Glue
- Scissors
- Marker or pen
Working Model Making Steps:
- Prepare the Base:
- Cut a piece of cardboard to serve as the base for your model. The size can vary, but make sure it’s large enough to support the setup.
- Attach the Large Thermocol Ball:
- Glue the large thermocol ball (representing Earth) to the center of the cardboard base.
- Attach the Small Thermocol Ball:
- Glue the small thermocol ball (representing a smaller object) to one end of a piece of thread.
- Create Support for Small Ball:
- Attach the other end of the thread to a point above the large thermocol ball. This can be achieved by either suspending it from above or attaching it to a vertical support.
- Attach Magnets to Balls:
- Attach one magnet to the bottom of the large thermocol ball (Earth) and the other magnet to the top of the small thermocol ball. Ensure the magnets have the same pole facing each other (either both north or both south).
- Adjust Height and Orientation:
- Adjust the height and orientation of the small thermocol ball using the thread until it is hanging directly above the large thermocol ball.
- Demonstrate Gravitational Force:
- When everything is set up, the gravitational force between the large and small thermocol balls, represented by the magnets, will cause the smaller ball to orbit or revolve around the larger ball.
- Observe and Explain:
- Observe the model and explain how the force of gravity between the two objects is causing the smaller object to orbit around the larger one. Discuss how this model represents the gravitational relationship between celestial bodies.