RIESI, Administrators
3,664
edits
Changes
From Karnataka Open Educational Resources
no edit summary
<div style="width:150px;border:none; border-radius:10px;box-shadow: 5px 5px 5px #888888; background:#ffffff; vertical-align:top; text-align:center; padding:5px;">
<div style="width:150px;border:none; border-radius:10px;box-shadow: 5px 5px 5px #888888; background:#ffffff; vertical-align:top; text-align:center; padding:5px;">
''[http://karnatakaeducation.org.in/KOER/index.php/ಸೂರ್ಯ ಕನ್ನಡದಲ್ಲಿ ನೋಡಿ]''</div>
''[http://karnatakaeducation.org.in/KOER/index.php/ಸೂರ್ಯ ಕನ್ನಡದಲ್ಲಿ ನೋಡಿ]''</div>
= Concept Map =
= Concept Map =
[[File:the sun.mm|Flash]]
= Textbook =
= Textbook =
Kepler's laws of Planetary motion:3 laws of planetary motion.
Kepler's laws of Planetary motion:3 laws of planetary motion.
==Concept:'''Nature and main features of the Sun'''==
==Concept-1:'''Nature and main features of the Sun'''==
* Main features of The Sun
* Main features of The Sun
* Manifestations of Solar activity.
* Manifestations of Solar activity.
===Learning objectives===
===Learning objectives===
* The Sun is an immense ball of gases nearly a million miles in diameter, with a mass of more than 300,000 times the mass of the Earth. This happens to be about a thousand times the mass and a thousand times the volume of Jupiter, so the Sun is, like Jupiter, about 30% denser than water. However, unlike Jupiter, which is made of liquid hydrogen and helium, the Sun is entirely gaseous. This difference is caused by the Sun's high temperature, which ranges from a low of 6000 Kelvins (about 10000 Fahrenheit) at the surface to a high of about 15 million Kelvins (almost 30 million Fahrenheit) in the center. These high temperatures tear any molecules or atoms of hydrogen and helium to pieces, and those pieces are much smaller than ordinary atoms, so even at very high densities the materials in the Sun are still gaseous.
* The Sun is an immense ball of gases nearly a million miles in diameter, with a mass of more than 300,000 times the mass of the Earth. This happens to be about a thousand times the mass and a thousand times the volume of Jupiter, so the Sun is, like Jupiter, about 30% denser than water. However, unlike Jupiter, which is made of liquid hydrogen and helium, the Sun is entirely gaseous. This difference is caused by the Sun's high temperature, which ranges from a low of 6000 Kelvins (about 10000 Fahrenheit) at the surface to a high of about 15 million Kelvins (almost 30 million Fahrenheit) in the center. These high temperatures tear any molecules or atoms of hydrogen and helium to pieces, and those pieces are much smaller than ordinary atoms, so even at very high densities the materials in the Sun are still gaseous.
#Explains the reason for enormous energy output of The Sun.
#Explains the reason for enormous energy output of The Sun.
#Explains reason for calling the Sun as the laboratory for studying the other stars.
#Explains reason for calling the Sun as the laboratory for studying the other stars.
===Notes for teachers===
===Notes for teachers===
#
#
==Concept #==
==Concept-2:'''Kepler's laws of planetary motion'''==
* Kepler's first law
* Kepler's second law
* Kepler's third law
===Learning objectives===
===Learning objectives===
* Kepler presented his first two laws of planetary motion in 1609 by using the notes of his predecessor ''TYCHO BRAHE'' and third law in 1619.
* Kepler developed his laws empirically from observation, as opposed to deriving them from some fundamental theoretical principles. About 30 years after Kepler died, '''Isaac Newton''' was able to derive '''Kepler's Laws''' from '''basic laws of gravity'''.
* Newton presented his law of universal gravitation as a case study of his laws of motion. All matter exerts a force, which he called gravity, that pulls all other matter towards its center. The strength of the force depends on the mass of the object: the Sun has more gravity than Earth, which in turn has more gravity than an apple. Also, the force weakens with distance. Objects far from the Sun won’t be influenced by its gravity.Hence all the planets of the solar system revolve around the SUN due to '''Strong gravitational force of the Sun'''.
* Newton’s laws of motion and gravity explained Earth’s annual journey around the Sun. Earth would move straight forward through the universe, but the Sun exerts a constant pull on our planet. This force bends Earth’s path toward the Sun, pulling the planet into an elliptical (almost circular) orbit. His theories also made it possible to explain and predict the tides. The rise and fall of ocean water levels are created by the gravitational pull of the Moon as it orbits Earth.
#States Kepler's three laws of planetary motion.
#Explains Kepler's laws of planetary motion.
===Notes for teachers===
===Notes for teachers===
''These are short notes that the teacher wants to share about the concept, any locally relevant information, specific instructions on what kind of methodology used and common misconceptions/mistakes.''
''These are short notes that the teacher wants to share about the concept, any locally relevant information, specific instructions on what kind of methodology used and common misconceptions/mistakes.''
= Fun corner =
= Fun corner =
[[Category:Science]]
