Link to the demonstrator: in English
Duration: 3 hours
Equipment: PC with internet connection
Author: Dr. Rosa Doran (NUCLIO)
This demonstrator introduces the Sun as an active star and how its activity can influence Earth. Students are questioned about its movements and led to realize that the Sun rotates. Real images will be used to determine the solar rotation period. Students will learn how to use a specific image software to track sunspots and calculate the Sun’s rotation period. Further analysis will show that the Sun doesn’t rotate as a rigid body: it exhibits differential rotation. Students can present their work to the class and discuss how they compare with the most accurate results that astronomers have.
- Teach students about the Sun’s activity and its influence on Earth.
- Allow students to understand the evidence of the Sun’s rotation movement.
- Introduce basic concepts of Astronomy and Image Processing.
- Basic Astronomy knowledge of the Sun as a star
- Excel (charts)
- Kinematic’s concepts such as: period
- Sun’s activity
By the end of this descriptor, students should be able to:
- Describe the Sun as an active star
- Explain what sunspots are
- Describe a method to measure the rotation period of the Sun
- Examine images using the salsa J software
- Form conclusions about the Sun’s differential rotation
- Videos to engage
- Salsa J – making movies and examining images
- Different methods to measure the rotation period of the Sun
- Analysis and explanation
- Final report and discussion
By the end of this descriptor, students should be able to answer the following:
- Write a couple of sentences describing what you learned about the Sun’s activity.
- What movements does the Sun have? How can we prove that the Sun rotates?
- How do we know that the Sun rotates differentially?
- Why doesn’t the Sun rotate like a rigid body?