|Physical Science||Energy/Light/Heat/Sound 1C2.00||Habits of Mind||Assumptions 3.2 abcd|
CONTENT STANDARD: Physical Science
CONTENT TOPIC: Energy/Light/Heat/Sound
CONCEPT: Position and Motion of Objects
CONTENT OBJECTIVE: 1C2.00 To understand that sound travels in all directions from its source
INSTRUCTIONAL OBJECTIVES: The learner will:
TN COMPONENT OF SCIENCE: Habits of Mind
BENCHMARK Careful observation can yield scientific knowledge.
3.2b Predictions are based on previous knowledge.
BENCHMARK Prior knowledge is the framework for making predictions.
3.2c The critical assumptions behind any line of reasoning must be made explicit so that the validity of the position taken can be judged.
BENCHMARK Claims of findings made during scientific investigation must be supported with evidence to ensure logical argument.
3.2d The validity of an investigation cannot be accepted unless the complete investigation can be independently duplicated.
BENCHMARK If variables remain constant an investigation can be repeated with expectations of predictable results.
All sound is produced by the vibration of matter. Matter may vibrate after absorbing energy. When sound reaches our ears, our eardrums and connected tiny bones vibrate. Sounds may be high or low. This is called pitch. Objects that vibrate quickly make sounds with high pitch. Objects that vibrate more slowly make sounds with a lower pitch.
Quietly return to your seats. Sit and listen for anything you can hear in this building or outside. (pause) Did you hear different sounds? (response) Were they of the same loudness? (response) Could we say that the source of loud sounds are closer to us. (response) Could we say that softer sounds are farther away from us? (response)
Children, we will choose partners and go outside to listen to sounds around us. I want you to tell your partner if a sound is near or far away.
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