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Line 60: − − ===Activity No # 1 - Discussion about mass === − {| style="height:10px; float:right; align:center;" − |<div style="width:150px;border:none; border-radius:10px;box-shadow: 5px 5px 5px #888888; background:#f5f5f5; vertical-align:top; text-align:center; padding:5px;"> − ''[http://www.karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div> − |} − * '''Estimated Time''' - 30 minutes − * '''Materials/ Resources needed''' − * '''Prerequisites/Instructions, if any''' − * '''Multimedia resources'''<br> − {{#widget:YouTube|id=QkCWoRGZLyI}}<br> − '''This video describes the inertial property of mass''' − * '''Website interactives/ links/ simulations''' − * '''Process (How to do the activity)'''<br> − #Let the students watch the video − #Ask them to write situations where they have faced inertia − * '''Developmental Questions (What discussion questions)''' − #When do we say something has inertia? (When it does not change its position) − #What does inertia do? (Resists change) − #Does it depend on size of the object? (Yes/ No/ Not always) − #If not on size, what does it depend on? (It depends on how much matter ther?e is - mass) − #When we observe inertia, we can say object has mass − − * '''Evaluation (Questions for assessment of the child)''' − #Does inertia increase with size? − #Will an object have inertia when it moves? − * '''Question Corner''' − #How can I tell that an object has mass or not? − − ===Activity No # === − {| style="height:10px; float:right; align:center;" − |<div style="width:150px;border:none; border-radius:10px;box-shadow: 5px 5px 5px #888888; background:#f5f5f5; vertical-align:top; text-align:center; padding:5px;"> − ''[http://www.karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div> − |} − * '''Estimated Time''' − * '''Materials/ Resources needed''' − * '''Prerequisites/Instructions, if any''' − * '''Multimedia resources''' − * '''Website interactives/ links/ simulations''' − * '''Process (How to do the activity)''' − * '''Developmental Questions (What discussion questions)''' − * '''Evaluation (Questions for assessment of the child)''' − * '''Question Corner''' − Line 96:
Line 65: − [[Image:gravity-force-lab-screenshot.png|100px]] − − === Activity 1 Use the following simulation for a demonstration of the gravitational force === − [[Image:gravity-force-lab-screenshot.png|Gravity Force Lab]] − {| border="1" − |- − |Click to Run − |} − − [http://phet.colorado.edu/en/simulation/gravity-force-lab Click here for PhET simulation] − <br><br> − − [['''Newton's Law of Gravitation''']]+ − [['''Inverse Square Law''']] − − − ''Law of gravitation and relativity'' − − Newton's law has since been superseded by Einstein's theory of general relativity, but it continues to be used as it is, as an excellent approximation of the effects of gravity. Gravitational force acts at a distance. The properties of the space surrounding any massive body can be considered to be altered in such a way that another massive body in this region experiences a force. This alteration of space is a gravitational field. Einstein perceived a gravitational field as a geometrical warping of four dimensional space and time; masses “bend” the space around them. Gravity is the property of matter that possesses mass that causes a force of attraction to exist between any two particles in space. − <br> − + + + + − − ===Activity No # === − + − + + + + + + + + + + + + + + + − + + − +
Universal Law of Gravitation (view source)
Revision as of 11:39, 28 October 2020
, 11:39, 28 October 2020→Activity No # 1 - Inertial property of mass
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[http://www.karnatakaeducation.org.in/KOER/en/index.php/Science:_History The Story of Science]
[http://karnatakaeducation.org.in/KOER/en/index.php/Science:_History The Story of Science]
|style=" width:10%; border:none; border-radius:5px;box-shadow: 5px 5px 5px #888888; background:#f9f9ff; vertical-align:middle; text-align:center; "|[http://www.karnatakaeducation.org.in/KOER/en/index.php/Science:_Philosophy Philosophy of Science]
|style=" width:10%; border:none; border-radius:5px;box-shadow: 5px 5px 5px #888888; background:#f9f9ff; vertical-align:middle; text-align:center; "|[http://karnatakaeducation.org.in/KOER/en/index.php/Science:_Philosophy Philosophy of Science]
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[http://www.karnatakaeducation.org.in/KOER/en/index.php/Science:_Pedagogy Teaching of Science]
[http://karnatakaeducation.org.in/KOER/en/index.php/Science:_Pedagogy Teaching of Science]
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[http://www.karnatakaeducation.org.in/KOER/en/index.php/Science:_Curriculum_and_Syllabus Curriculum and Syllabus]
[http://karnatakaeducation.org.in/KOER/en/index.php/Science:_Curriculum_and_Syllabus Curriculum and Syllabus]
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[http://www.karnatakaeducation.org.in/KOER/en/index.php/Science:_Topics Topics in School Science]
[http://karnatakaeducation.org.in/KOER/en/index.php/Science:_Topics Topics in School Science]
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[http://www.karnatakaeducation.org.in/KOER/en/index.php/Textbooks#Science_-_Textbooks Textbooks]
[http://karnatakaeducation.org.in/KOER/en/index.php/Textbooks#Science_-_Textbooks Textbooks]
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[http://www.karnatakaeducation.org.in/KOER/en/index.php/Science:_Question_Papers Question Bank]
[http://karnatakaeducation.org.in/KOER/en/index.php/Science:_Question_Papers Question Bank]
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While creating a resource page, please click here for a resource creation [http://karnatakaeducation.org.in/KOER/en/index.php/Resource_Creation_Checklist '''checklist''']
While creating a resource page, please click here for a resource creation [http://karnatakaeducation.org.in/KOER/en/index.php/Resource_Creation_Checklist '''checklist''']
= Concept Map =
= Concept Map =
[[File:Universal_Law_of_Gravitation.mm|Flash]]
__FORCETOC__
__FORCETOC__
= Textbook =
= Textbook =
= Additional information =
= Additional information =
==Useful websites==
==Useful websites==
#Cavendish experiment - This link gives a simple sketch of the Cavendish experiment.
This [http://sciencedemonstrations.fas.harvard.edu/icb/icb.do?keyword=k16940&pageid=icb.page80669&pageContentId=icb.pagecontent277503&state=maximize&view=view.do&viewParam_name=indepth.html website] demonstrates the set-up of the Cavendish experiment.
#[[Image:Walter-Levin.png|80px|left]]This is a college lecture by Prof Walter Levin explaining gravitation. Click [http://upload.wikimedia.org/wikipedia/commons/9/91/Newtonslawofgravity.ogg here] to see the video.<br><br><br><br>
#[http://www.conceptualphysics.com/ Conceptual Physics]
#[http://www.physicsclassroom.com Physics Classroom]
==Reference Books==
==Reference Books==
The following textbooks are good references
#Conceptual Physics, Paul Hewitt, 10th Edition
#Physics for Scientists and Engineers, Douglas C. Giancoli, 3rd Edition
#Resnick & Halliday with Jearl Walker, 8th Edition
#NCERT Class 9 textbook [http://ncert.nic.in/NCERTS/textbook/textbook.htm?iesc1=8-14 Motion]
#NCERT Class 9 textbook [http://ncert.nic.in/NCERTS/textbook/textbook.htm?iesc1=9-14 Laws of Motion]
#NCERT Class 9 textbook [http://ncert.nic.in/NCERTS/textbook/textbook.htm?iesc1=10-14 Gravitation]
= Teaching Outlines =
= Teaching Outlines =
* Strong and weak nuclear forces are other fundamental forces that act within the nucleus of an atom, holding it together. These forces however act only at the subatomic level. Above the atomic level, gravitational and electromagnetic forces can satisfactorily explain all events.
* Strong and weak nuclear forces are other fundamental forces that act within the nucleus of an atom, holding it together. These forces however act only at the subatomic level. Above the atomic level, gravitational and electromagnetic forces can satisfactorily explain all events.
<br><br>
<br><br>
==Concept #2 - Newton's law of universal gravitation==
==Concept #2 - Newton's law of universal gravitation==
#Gravitational Force is small
#Gravitational Force is small
#The importance of inverse square law
#The importance of inverse square law
===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.''
Newton's law of universal gravitation states that every particle in the universe attracts every other particle with a force that is proportional to the product of their masses and inversely proportional to the square of the distance between them. Click on the links below to read more.
#[[Newton's Law of Gravitation]]
#[[Inverse Square Law]]
#[[Law of gravitation and relativity]]
===Activity No # 1 Demonstration of the gravitational force ===
{| style="height:10px; float:right; align:center;"
{| style="height:10px; float:right; align:center;"
|<div style="width:150px;border:none; border-radius:10px;box-shadow: 5px 5px 5px #888888; background:#f5f5f5; vertical-align:top; text-align:center; padding:5px;">
|<div style="width:150px;border:none; border-radius:10px;box-shadow: 5px 5px 5px #888888; background:#f5f5f5; vertical-align:top; text-align:center; padding:5px;">
''[http://www.karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div>
''[http://karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div>
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* '''Estimated Time'''
* '''Estimated Time''' - 45 minutes
* '''Materials/ Resources needed'''
* '''Materials/ Resources needed'''
* '''Prerequisites/Instructions, if any'''
* '''Prerequisites/Instructions, if any'''
* '''Multimedia resources'''
* '''Multimedia resources'''
* '''Website interactives/ links/ simulations'''
* '''Website interactives/ links/ simulations'''
[[Image:gravity-force-lab-screenshot.png|200px]]
[http://phet.colorado.edu/en/simulation/gravity-force-lab '''Click here for PhET simulation''']
<br><br>
* '''Process (How to do the activity)'''
* '''Process (How to do the activity)'''
#Open the simulation
#Work with the simulation, change the parameters and discuss the following questions o
* '''Developmental Questions (What discussion questions)'''
* '''Developmental Questions (What discussion questions)'''
#When <math>m_1</math> is moved towards <math>m_2</math> what is the the force on each sphere?
#What is the direction and magnitude of the force?
#When the spheres are moved towards each other, does the force increase or decrease?
#What is this due to? (Inverse square law)
* '''Evaluation (Questions for assessment of the child)'''
* '''Evaluation (Questions for assessment of the child)'''
#If the gravitational force is the same for both objects, why do we see the apple falling but not the ground moving up?
#What can you say about the magnitude of gravitational force?
* '''Question Corner'''
* '''Question Corner'''
#If you were to go inside a mine, deep into the Earth will the gravitational force increase or decrease?
#If there was a hollow channel through the centre of the earth and if you drop a ball inside, how would the ball move?
===Activity No # ===
===Activity No # ===
{| style="height:10px; float:right; align:center;"
{| style="height:10px; float:right; align:center;"
|<div style="width:150px;border:none; border-radius:10px;box-shadow: 5px 5px 5px #888888; background:#f5f5f5; vertical-align:top; text-align:center; padding:5px;">
|<div style="width:150px;border:none; border-radius:10px;box-shadow: 5px 5px 5px #888888; background:#f5f5f5; vertical-align:top; text-align:center; padding:5px;">
''[http://www.karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div>
''[http://karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div>
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* '''Estimated Time'''
* '''Estimated Time'''