| Subject:
Secondary Science
Year: 8
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| Strand 3: Energy and change
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Substrand: "8.6 Heat and sound"
(4 periods)
This sub-strand deals with Heat and Sound. Heat is the condition of being hot or cold. Heat is a form of energy that associates with the movement of atoms or molecule in the material. Higher the temperature, faster the movement of the atoms or molecule in the material and hence greater the energy present in the material. Conduction carries heat through solid. Convection carries heat through liquids. Radiation carries heat through empty space. Heat energy cause expansion of matter. Sound is formed by sound vibration of particles. Sound energy travels through solids, liquids, and gases. Sound does not travel through empty space.
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| General Learning Outcomes | Specific Learning Outcomes | Suggested Assessment Events |
Learner's should:
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Learner's should:
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Learner's should:
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8.6.1 know that heat is a form of energy (k)
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8.6.1.1 state that heat is caused by movement of atoms or molecules in the material and produces energy
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8.6.2 understand that heat transfer by conduction, convection and radiation (u)
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8.6.2.1 explain that heat energy is transferred by conduction, convection and radiation
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8.6.3 be able to show heat transfer (s)
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8.6.3.1 demonstrate heat transfer by conduction, convection and radiation
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8.6.4 be able to show that heat can cause expansion of matter (s)
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8.6.4.1 demonstrate expansion and contraction of metallic material when heated or cooled down
8.6.4.2 explain how the particles of materials take up more space when they are heated
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8.6.5 appreciate that heat gives us heat energy (a)
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8.6.5.1 express ways that heat energy is used in your life; example; i. heat energy is used to cook food; ii. heat energy is used to keep warm body; iii. heat energy is used to make things
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8.6.6 know that vibration of particles of matter causes sound waves (k)
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8.6.6.1 describe sound caused by vibrating particles
8.6.6.2 state that sound has pitch and loudness
8.6.6.3 list 4 local materials as source of sound in the order of increasing pitch
8.6.6.4 state that sound need medium to travel: solid, liquid and gas
8.6.6.5 state that sound moves as a wave, formed by compression and rare-fractions of particles
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8.6.7 know the sound hearing range (k)
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8.6.7.1 identify the sound hearing range of our ears between 20 – 20,000 hz
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8.6.8 know that sound travel through different medium (u)
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8.6.8.1 describe the speed of sound in solid, liquid and gas
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8.6.9 be able to show different sound media (s)
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8.6.9.1 demonstrating using different media, how sound travel; i. string, telephone (solid) ii. listening to radio (air) iii. clapping hands under water (liquid)
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8.6.10 know the different parts of the ear (k)
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8.6.10.1 identify and labeled the main parts of a human ear; pinna, outer ear canal, eardrum, hammer, anvil, stirrup, semicircular canals, nerve, cochlea and eustachian tube
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8.6.11 know the functions of the parts of the ear (k)
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8.6.11.1 describe the function of the main parts of the ear; outer ear canal, eardrum, hammer, semicircular canal, nerve and cochlea
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8.6.12 appreciate that talking produce sound waves (a)
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8.6.12.1 express ways sound affects our life; example: i. sound gives us direction ii. sound gives us instruction iii. sound makes us wake up iv. sound makes us feel excited
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