sound meters and microphones. silence for two minutes and just This activity can Exploring graphically. which materials Recall that human hearing can be listen. At the end of that time, ask be used for Science. are the best for damaged by loud sounds. them what sounds they heard, which comparing soundproofing. Name the parts of the ear. were the loudest, where they were hearing ranges. Students plot a Recall that different animals have coming from, etc. Means can be chart to show different hearing ranges. determined from their results. State the meaning of: ultrasound, Exploring: Soundproof design the data and infrasound. Students investigate which materials spreadsheet Students Compare how sounds travel through are the best for soundproofing. programs can be determine their different materials. Students plot a chart to show their used to produce own hearing Securing results. graphs or bar range by using Describe the functions of the parts of charts to show a signal the ear. Explaining: Hearing ranges the hearing generator and a Describe how microphones convert Ask students to determine their own ranges of the loudspeaker sound into electrical signals. hearing range by using a signal students in the connected to a Recall the units for loudness. generator and a loudspeaker class. suitable Evaluate different materials used for connected to a suitable amplifier to amplifier to soundproofing/ sound insulation. produce a tone of medium loudness. produce a tone Exceeding of medium Explain how human hearing can be Plenary: Thinking skills loudness. damaged by sound. Plus, Minus, Interesting: We should Explain how animals can detect the be able to hear a much greater range direction from which a sound is of frequencies. (Possible answers: coming. Plus – we could use a wider range of frequencies in music; Minus – some things might make annoying high frequency noises that we cannot hear at the moment; Interesting – would we be able to hear bats? We can feel sounds below our hearing range through our bodies.) Lesson 7Ld: Using sounds Learning objectives Exemplar teaching activities Differentiation Resources Maths skills Practical skills Developing Starter: Three uses n/a Resources n/a n/a Describe some uses of ultrasound. Ask students to work in pairs to write from 7Ld
sound meters and microphones. Recall that human hearing can be damaged by loud sounds. Name the parts of the ear. Recall that different animals have different hearing ranges. State the meaning of: ultrasound, infrasound. Compare how sounds travel through different materials. Securing Describe the functions of the parts of the ear. Describe how microphones convert sound into electrical signals. Recall the units for loudness. Evaluate different materials used for soundproofing/ sound insulation. Exceeding Explain how human hearing can be damaged by sound. Explain how animals can detect the direction from which a sound is coming. silence for two minutes and just listen. At the end of that time, ask them what sounds they heard, which were the loudest, where they were coming from, etc. Exploring: Soundproof design Students investigate which materials are the best for soundproofing. Students plot a chart to show their results. Explaining: Hearing ranges Ask students to determine their own hearing range by using a signal generator and a loudspeaker connected to a suitable amplifier to produce a tone of medium loudness. Plenary: Thinking skills Plus, Minus, Interesting: We should be able to hear a much greater range of frequencies. (Possible answers: Plus – we could use a wider range of frequencies in music; Minus – some things might make annoying high frequency noises that we cannot hear at the moment; Interesting – would we be able to hear bats? We can feel sounds below our hearing range through our bodies.) This activity can be used for comparing hearing ranges. Means can be determined from the data and spreadsheet programs can be used to produce graphs or bar charts to show the hearing ranges of the students in the class. Exploring Science. graphically. which materials are the best for soundproofing. Students plot a chart to show their results. Students determine their own hearing range by using a signal generator and a loudspeaker connected to a suitable amplifier to produce a tone of medium loudness. Lesson 7Ld: Using sounds Learning objectives Exemplar teaching activities Differentiation Resources Maths skills Practical skills Developing Describe some uses of ultrasound. Starter: Three uses Ask students to work in pairs to write n/a Resources from 7Ld n/a n/a