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Questions and Answers
Which statement best describes the structure of the Sun?
Which statement best describes the structure of the Sun?
- The Sun has a uniform internal structure similar to other stars.
- The Sun is made up of distinct layers, both inner and outer. (correct)
- The Sun consists of only two layers: the core and the prominence.
- The Sun has no distinct layers but is a solid sphere throughout.
How many total layers make up the structure of the Sun?
How many total layers make up the structure of the Sun?
- Seven
- Eight
- Six (correct)
- Five
Which term refers to the features sometimes visible extending outward from the Sun?
Which term refers to the features sometimes visible extending outward from the Sun?
- Chromosphere
- Core
- Photosphere
- Prominence (correct)
Which layers of the Sun are categorized as inner layers?
Which layers of the Sun are categorized as inner layers?
What are the two primary elements that the Sun is composed of?
What are the two primary elements that the Sun is composed of?
Which layer of the Sun is characterized by its visible light emission?
Which layer of the Sun is characterized by its visible light emission?
What separates the layers of the Sun into inner and outer categories?
What separates the layers of the Sun into inner and outer categories?
What percentage of the Sun's core is helium?
What percentage of the Sun's core is helium?
Which layer of the Sun's atmosphere can be directly observed?
Which layer of the Sun's atmosphere can be directly observed?
What process occurs in the core of the Sun?
What process occurs in the core of the Sun?
In which layer of the Sun does energy transfer occur through convection?
In which layer of the Sun does energy transfer occur through convection?
Which layer of the Sun's atmosphere extends millions of kilometers into space?
Which layer of the Sun's atmosphere extends millions of kilometers into space?
What feature of the Sun's surface is visible during total eclipses?
What feature of the Sun's surface is visible during total eclipses?
What is the temperature range of the photosphere, the deepest layer that can be directly observed?
What is the temperature range of the photosphere, the deepest layer that can be directly observed?
What is the primary composition of the solar wind that flows from the Sun's corona?
What is the primary composition of the solar wind that flows from the Sun's corona?
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Study Notes
Structure of the Sun
- The Sun is composed of multiple layers, with a total of 7 layers.
Inner Layers
- The core, radiative zone, and convective zone are categorized as inner layers.
Composition of the Sun
- The Sun is primarily composed of two elements: hydrogen and helium.
Core of the Sun
- The core of the Sun is where nuclear reactions occur, and it is characterized by a helium composition of 25%.
Photosphere
- The photosphere is the layer of the Sun characterized by its visible light emission, with a temperature range of 5,500°C to 6,000°C.
Atmosphere of the Sun
- The chromosphere and corona are part of the Sun's atmosphere, with the corona being the outermost layer extending millions of kilometers into space.
- The chromosphere is the layer of the Sun's atmosphere that can be directly observed.
Energy Transfer
- Energy transfer occurs through convection in the convective zone.
Solar Wind
- The solar wind is primarily composed of electrons and protons, and it flows from the Sun's corona.
Surface Features
- Sunspots are visible on the Sun's surface during total eclipses, and solar prominences are features that sometimes extend outward from the Sun.
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