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Line 70: − + − {| 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://karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div> − |} − * '''Estimated Time'''- 30 minutes − * '''Materials/ Resources needed''' - Discussions − * '''Prerequisites/Instructions, if any''' − * '''Multimedia resources''' − − <gallery> − − Image:force3.png − Image:force2.png − Image:force1.png − − </gallery> − − * '''Website interactives/ links/ simulations''' − * '''Process (How to do the activity)''' − #This is in the form of a discussion − #Students explore words like force, push, pull, contact, distance, etc − #Let the students look at the picture and describe the force and the effect − * '''Developmental Questions (What discussion questions)''' − #What do we mean when we say force? − #What does it do? (Produces an acceleration/ change in state - they can start with push and pull) − #For force to be there, do I have to touch? (Contact) − #When have you seen non-contact forces? (Electric shock, magnetism) − #Force can act at a distance; it is called field − * '''Evaluation (Questions for assessment of the child)''' − #How will you define the field of a force? − #Does the field have a definite size? − * '''Question Corner'''
→Activity No # 1 - The various forces we see
In everyday life, gravitation is most familiar as the cause due to which masses fall to the ground. Gravitation causes dispersed matter to coalesce, and coalesced matter to remain intact, thus accounting for the existence of the Earth, the Sun, and most of the macroscopic objects in the universe. Gravitation is responsible for keeping the Earth and the other planets in their orbits around the Sun; for keeping the Moon in its orbit around the Earth; for the formation of tides; for natural convection, by which fluid flow occurs under the influence of a density gradient and gravity; for heating the interiors of forming stars and planets to very high temperatures; and for various other phenomena observed on Earth and the Universe. These are some of the questions we will explore here.
In everyday life, gravitation is most familiar as the cause due to which masses fall to the ground. Gravitation causes dispersed matter to coalesce, and coalesced matter to remain intact, thus accounting for the existence of the Earth, the Sun, and most of the macroscopic objects in the universe. Gravitation is responsible for keeping the Earth and the other planets in their orbits around the Sun; for keeping the Moon in its orbit around the Earth; for the formation of tides; for natural convection, by which fluid flow occurs under the influence of a density gradient and gravity; for heating the interiors of forming stars and planets to very high temperatures; and for various other phenomena observed on Earth and the Universe. These are some of the questions we will explore here.
===Activity No # 1 - The various forces we see ===
===Activities ===
#[http://karnatakaeducation.org.in/KOER/en/index.php/Gravitation_Activity_1 The various forces we see] ===
The following pictures have been sourced from the NCERT Class 7 textbook.
===Activity No # 2 More about contact forces===
===Activity No # 2 More about contact forces===