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Questions and Answers
What does Adam Joseph feel when his learners perform well?
Who are the authors of the Via Afrika Physical Sciences study guide?
What is the purpose of the possible work schedule included in the course?
Why does Via Afrika appreciate the role of teachers?
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What is the significance of page 39 in the course?
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Who is the teacher being quoted in the passage?
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What does Via Afrika aim to do for teachers?
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What is the name of the publisher of the Physical Sciences study guide?
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What is the relationship between the frequency and the period of a wave?
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What is the wavelength of the transverse wave in the worked example?
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What is the result of crest meeting crest in superposition of pulses?
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What is the amplitude of a longitudinal pulse?
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What is the speed of the wave in the worked example?
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What is the condition for two pulses to cancel out to produce zero amplitude?
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What is a longitudinal pulse?
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What is the result of trough meeting trough in superposition of pulses?
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What is the purpose of assuming an answer to a question in an exam?
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What is the primary goal of the summaries in the study guide?
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How should you approach a question where you have no idea how to answer it?
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What is the purpose of the prefixes and units table in the study guide?
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Why should you not try to memorize the summaries without understanding them?
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What is the benefit of writing down the key words from the summary?
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Why are the sample Physics and Chemistry examinations provided at the end of the book?
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What is the purpose of the marks allocation provided with the answers in the study guide?
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What is the phenomenon in the ripple tank shown in the photograph?
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What do the fan-shaped lines in the ripple tank represent?
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What type of wave is a sound wave that reaches your ear?
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What is the wavelength of a sound wave with a frequency of 500 Hz and a speed of 340 m/s?
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Why is the moon sometimes referred to as 'the silent planet'?
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What is the speed of sound in air?
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What is the frequency of yellow light?
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What is the wavelength of yellow light in nanometers?
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What should you do if you are unsure of an answer to a multiple-choice question?
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What is the first step in answering a calculation question?
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What happens if you do not state the formula before doing a calculation?
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What system of units is used in Physical Science?
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What is the mark allocation for a calculation question?
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What should you do if you are given a value in another unit?
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What is the correct way to write your final answer?
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What should you do if you are running out of time and have not finished the examination?
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Study Notes
Tips for Teachers and Learners
- Via Afrika values and supports teachers' roles, providing resources to save time and make teaching easier.
- The series is aligned with CAPS, with a possible work schedule and assistance for successful teaching.
Studying and Examination Techniques
- A possible work schedule has been included to assist learners.
- Eliminate choices and guess if unsure, but commit to an answer and mark it for review later.
- Calculations require stating the principle, law, or equation first, then substituting values in SI units.
- Write the correct SI unit with the final answer, and include direction for vector quantities.
- Marks are allocated for the equation, correct substitutions, calculated answer, and direction.
- Positive marking allows for correct calculations despite incorrect initial answers.
Using the Study Guide
- Each topic is presented as a summary followed by examination-type questions.
- Summaries are the "bare bones" of what learners need to know, but they must understand each statement.
- Learners should write down key words, test themselves, and then work through the questions.
- A full sample Physics examination and a full sample Chemistry examination are provided.
Physical Science Basics
- Prefixes are used in Physical Science, with examples provided in a table.
- The wave equation is v = fλ, with f = 1/T, and v = λ/T.
- Superposition is the addition of amplitudes of two pulses occupying the same space, resulting in constructive or destructive interference.
Longitudinal Waves and Sound
- A pulse is a single disturbance in a medium, with amplitude as the maximum displacement from rest position.
- Longitudinal pulses and waves have compressions and rarefactions.
- Sound waves are a type of wave that reaches the ear, demonstrated using a slinky spring.
- Wavelength is the distance between two consecutive points in a wave that are in phase.
Questions and Answers
- The phenomenon in the ripple tank is called superposition, with fan-shaped lines representing the resulting wave pattern.
- Sound waves have a frequency of around 500 Hz, with a wavelength calculated using v = fλ.
- Yellow light has a frequency of around 5 × 1014 Hz, with a wavelength calculated using v = fλ, and expressed in nanometres.
- Sound cannot travel in a vacuum, and the moon is referred to as "the silent planet" due to this.
- The speed of sound in air is 340 m/s, with wavelength and period calculated for a tuning fork of frequency 156 Hz.
Studying That Suits You
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Description
A quiz based on Via Afrika's Grade 10 Teacher's Guide for Physical Sciences, covering various topics and concepts.
