head 1.1; access; symbols; locks; strict; comment @# @; 1.1 date 2017.10.27.13.11.55; author root; state Exp; branches; next ; desc @This document ( 4.5 Is this true in other cases also?) is re-created by administrator on 01 August 2017 @ 1.1 log @Initial revision @ text @{ "_id": { "$oid": "59b7e5382c4796015b350d82" }, "_type": "GSystem", "access_policy": "PUBLIC", "altnames": " 4.5 Is this true in other cases also?", "annotations": [], "attribute_set": [], "author_set": [ 1 ], "collection_set": [], "comment_enabled": null, "content": "
Let us do some activities.
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\r\nActivity: 1
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\r\nMaterials Required:
\r\n1. One 10 metres rope
\r\n2. Sketch pen
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\r\nProcedure:
\r\n1. Hold one end of a long string (10 metres) in your hand and ask your friend to hold the other end.
\r\n2. Mark a small portion on the string with a colour.
\r\n3. Now give a sudden jerk to the string.
\r\n\r\n\r\nDid the coloured mark change its position along the string?
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\r\n
\r\nDid you feel light and frequent jerks in your hand? Why does this happen?
Activity: 2
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\r\nYou must have floated a paper boat on water.
\r\n\r\n\r\n\r\nWhat happens to the boat when there are waves on the water surface?
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Video 4.5: Paper boat motion with the ripple
\r\n\r\n\r\n\r\n", "content_org": "", "contributors": [ 1 ], "created_at": 1501565291041, "created_by": 1, "featured": null, "group_set": [ { "$oid": "59b7e51a2c4796015b350b74" } ], "if_file": { "mid": { "id": null, "relurl": null }, "mime_type": null, "original": { "id": null, "relurl": null }, "thumbnail": { "id": null, "relurl": null } }, "language": [ "en", "English" ], "last_update": 1509129715598, "legal": { "copyright": "CC-BY-SA 4.0 unported", "license": "HBCSE" }, "location": [], "login_required": null, "member_of": [ { "$oid": "5752ad552e01310a05dca4a1" } ], "modified_by": 1, "module_set": [], "name": " 4.5 Is this true in other cases also?", "origin": [ { "fork_of": { "$oid": "597edc0b69602a0156a5dc40" } } ], "plural": "", "post_node": [], "prior_node": [ { "$oid": "59b7e5332c4796015b350d32" } ], "property_order": [], "rating": [], "relation_set": [], "snapshot": { "597ece6e69602a0154bb423e": "1.1", "59b7e51a2c4796015b350b74": "1.1" }, "start_publication": null, "status": "PUBLISHED", "tags": [], "type_of": [], "url": "" }@Does the boat move with the ripples?
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