ICSE Class 8 Physics, Unit 7: Sound
From the CISCE curriculum. 2 key concepts, about 1 day of study at 20 to 30 minutes a day.
What this unit aims at
In the previous classes children were made aware of and enabled to understand that a sound wave is characterised by its frequency and amplitude. Parameters that focus on loudness and pitch and are commonly used to characterise sound produced by different sources were also highlighted. The loudness depends on the amplitude, hence when the amplitude of sound is large, sound is loud. Pitch is related to the frequency so when the frequency is high, the pitch is high or the sound is shrill. In this class the theme focusses on showing how sound produced by different musical instruments have different pitch and loudness.
Your child should be able to
- relate pitch and frequency
- understand pitch and frequency in relation to working of musical instruments. (wind, membrane and string)
- explain mono tone
- relate loudness and amplitude
- state the unit of loudness in decibels
Key concepts in this unit
- Pitch and Frequency Pitch and frequency in relation to working of musical instruments. (Wind, membrane and String)
- Monotone Loudness and amplitude unit of loudness in decibels
Teach this unit at home
- A day-by-day plan from the CISCE concepts, so you know what to cover each day.
- A step-by-step script for each day, so you know what to say and ask (AI-written from the CISCE curriculum, so check it against your child's school book).
- A quiz at the end.
From the CISCE Curriculum for Classes I to VIII (2016). CISCE sets what is taught, not the textbooks, so schools use different books and there are no page numbers here. Adhian Gurus is not affiliated with CISCE.