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CSEE (Form 4) Physics — practice by topic

Browse 102 questions across 24 Physics topics. Choose what you want to revise, then open a question to check its answer and worked solution.

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Physics topics

Electrostatics (27)Motion in a Straight Line (8)Measurement (7)Light (6)Magnetism (6)Archimedes Principle and the Law of Floatation (4)Sound (4)Structure and Properties of Matter (4)Temperature (4)Electric Circuits (3)Electromagnetic Radiation (3)Longitudinal Waves (3)Measurement of Thermal Energy (3)Skills for Science (3)Sustainable Energy Sources (3)Transfer of Thermal Energy (3)Transverse Waves (3)Electromagnetism (2)Equipotential Surfaces (2)Mechanical Energy (2)Motion in One Dimension (2)Static Electricity (2)Transverse Pulses (2)Vectors and Scalars (2)

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The seven SI base units are called base units for which reason?Read the answer and worked solution →A learner must mix a strong acid with water in a laboratory. Which order is the safe one?Read the answer and worked solution →What is a single disturbance that moves through a medium called?Read the answer and worked solution →On a transverse wave, what do we call the point where the medium is displaced the most upwards?Read the answer and worked solution →

Worked practice questions

The seven SI base units are called base units for which reason?

  1. None can be built from the other six
  2. Each is used more often than others
  3. They were the first units measured
  4. They all describe a length somehow
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Correct answer: A. None can be built from the other six

1. Every physical quantity has a unit, and all units can be built from a small starting set. 2. Those starting units are called base units because none of them can be expressed as combinations of the other six. 3. They work like the letters of an alphabet, and every other unit is a word built from them. _Source: Siyavula Physical Sciences Grade 10 (Everything Science, CC BY 4.0), Chapter 1: Skills for science_

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A learner must mix a strong acid with water in a laboratory. Which order is the safe one?

  1. Add the water to the acid
  2. Add the acid to the water
  3. Add both at the same time
  4. Add ice to the acid first
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Correct answer: B. Add the acid to the water

1. Mixing acid and water releases heat, and heat released too fast can spit the liquid out of the container. 2. The safety rule is short and fixed: never add water to acid, always add the acid to water. 3. Pouring water onto acid puts a small mass of water on a large mass of acid, so the heat is concentrated and dangerous. _Source: Siyavula Physical Sciences Grade 10 (Everything Science, CC BY 4.0), Chapter 1: Skills for science_

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What is a single disturbance that moves through a medium called?

  1. A wave
  2. A crest
  3. A pulse
  4. A node
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Correct answer: C. A pulse

1. Flicking a stretched rope once sends one bump travelling along it. 2. A single disturbance that moves through a medium is called a pulse. 3. A wave is different because it is a whole train of pulses following one another. _Source: Siyavula Physical Sciences Grade 10 (Everything Science, CC BY 4.0), Chapter 7: Transverse pulses_

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