Photosphere
The photosphere is the outermost layer of the sun's atmosphere and is the part that emits the visible light that we see from Earth. It is a thick layer of hot, dense plasma, or ionized gas, that is the primary source of the sun's energy output. The temperature of the photosphere is around 5,500 degrees Celsius, and it is where the sunspots are located.
Key Concepts to Understand:
- Composition: The photosphere is primarily composed of hydrogen and helium, with trace amounts of other elements.
- Temperature: The temperature of the photosphere is around 5,500 degrees Celsius.
- Sunspots: Dark, cooler regions on the photosphere caused by magnetic activity.
- Energy Output: The photosphere is the primary source of the sun's energy output, emitting visible light that reaches Earth.
Study Guide:
To fully understand the concept of the photosphere, it is important to study the following topics:
- Solar Structure: Understand the layers of the sun's atmosphere and their characteristics, with a focus on the photosphere.
- Composition of the Photosphere: Study the composition of the photosphere, including the elements present and their relative abundance.
- Temperature and Energy Output: Learn about the temperature of the photosphere and how it contributes to the sun's energy output, including the emission of visible light.
- Sunspots and Magnetic Activity: Explore the formation of sunspots on the photosphere and the role of magnetic activity in their occurrence.
By mastering these key concepts and studying the related topics, you will gain a comprehensive understanding of the photosphere and its significance in solar astronomy.
.◂Chemistry Worksheets and Study Guides High School. Gases
The resources above cover the following skills:
Physical Science
Energy - A. Energy is involved in all physical and chemical processes. It is conserved, and can be transformed from one form to another and into work. At the atomic and nuclear levels energy is not continuous but exists in discrete amounts. Energy and mass are related through Einstein's equation E=mc 2 . B. The properties of atomic nuclei are responsible for energy-related phenomena such as radioactivity, fission and fusion. C. Changes in entropy and energy that accompany chemical reactions influence reaction paths. Chemical reactions result in the release or absorption of energy. D. The theory of electromagnetism explains that electricity and magnetism are closely related. Electric charges are the source of electric fields. Moving charges generate magnetic fields. E. Waves are the propagation of a disturbance. They transport energy and momentum but do not transport matter.
Relate temperature to the average molecular kinetic energy.