The sun – our main source of energy
Image
Labeled graphic:
A cross section through the sun shows the temperature and density profiles in the individual spheres. The energy comes from nuclear fusion in the interior of the sun.
Available in:
English, Spanish (CREA)
Type of media:
Image (155.4 kByte)
Last update:
2018-07-27
License:
This medium is made available under a CC BY-SA 4.0 international license.
What does this mean?
How to reference this medium
This medium is made available under a CC BY-SA 4.0 international license.
What does this mean?
How to reference this medium
Media package:
Description:
The sun’s radiant energy is the motor driving the processes that are vital for life on Earth’s surface. Energy is created by nuclear fusion in the interior of the sun and is diffused after about 10 million years to the surface of the sun (photosphere), which emits it as radiation to Earth. The radiant energy that finally reaches Earth is therefore ancient.
The temperature profile through the cross-section of the sun shows the temperature decrease from the core to the photosphere and the temperature increase from the photosphere to the corona.
Note: The “snake lines” in the picture symbolize the emerging radiation and its wavelength
The radiation that reaches Earth is emitted from the photosphere.
Information and ideas:
From what point of view is the sun an inexhaustible source of energy? What explanation is there for the fact that the temperature rises again from the photosphere to the corona? By the way: The mechanisms for heating up in the chromosphere are largely unexplained!
The temperature profile through the cross-section of the sun shows the temperature decrease from the core to the photosphere and the temperature increase from the photosphere to the corona.
Note: The “snake lines” in the picture symbolize the emerging radiation and its wavelength
The radiation that reaches Earth is emitted from the photosphere.
Information and ideas:
From what point of view is the sun an inexhaustible source of energy? What explanation is there for the fact that the temperature rises again from the photosphere to the corona? By the way: The mechanisms for heating up in the chromosphere are largely unexplained!
Related media:
There are no other media directly related to this file.
Learning resource type:
Illustration
Subjects:
Geography; Physics; Technology
Grade levels:
Grade 5 to 6; Grade 7 to 9; Grade 10 to 13
School types:
Middle/high school
Keywords:
Energy; Environment (general); Nuclear fusion; Power generation; Renewable energy; Solar energy; Energy conversion; Energy source; Environment; Nuclear fusion; Primary energy; Renewable energy; Solar energy; Source of energy
Bibliography:
Siemens Stiftung Media Portal
Author:
MediaHouse GmbH
Rights holder:
© Siemens Stiftung 2017