GRADE 9 PHYSICS

Fall Semester

  • Contact and Non-Contact Forces
  • Newton's Laws of Motion
  • Electromagnetism
  • Four Universal Forces
  • Force Fields
  • Electricity: A World Without Electricity
  • Technology and the Role of Electricity
  • Static Electricity
  • Current Electricity
  • Switches and Their Functions
  • Models for Circuits: Series and Parallel
  • Electrical Force and Coulomb's Law
  • Electric Capacity and Relations Between Capacitors
  • Electric Potential and Its Units
  • Ohm's Law for Part of Circuit
  • Ohm's Law for Whole Circuit
  • Electric Resistance: Series and Parallel Relations

Spring Semester

  • Electromagnetism and Magnetic Flux
  • Faraday's Law of Electromagnetic Induction
  • Lenz's Law
  • Periodic and Oscillatory Motion
  • Waves: Wave Sources and Types
  • Period and Frequency Units
  • Wavelength and Wave Velocity
  • Resonance and Noise
  • Comparing Waves
  • Making Sounds and Moving Sounds
  • Detecting Sounds
  • Doppler Effect (Moving Sounds)
  • Seeing Things: Light on the Move
  • Reflection of Light
  • Refraction of Light
  • Cameras and Eyes
  • Color and Its Properties

Fall Semester

  • Quiz 1: Contact and Non-Contact Forces, Newton’s Laws, Electromagnetism
  • Homework 1: Provide real-life examples of contact and non-contact forces and explain the four universal forces
  • Lab Activity 1: Investigate static electricity and build simple circuits with working switches
  • Test 1: Force fields, Electromagnetism, Differences between Series and Parallel Circuits
  • Group Project: Design and present a model demonstrating the importance of electricity in technology and build a functional circuit
  • Lab Report: Measure current, voltage, and resistance in series and parallel circuits to verify Ohm’s Law
  • Homework 2: Solve problems on Coulomb’s Law, capacitor relations, and electric potential
  • Quiz 2: Electric resistance in series and parallel circuits and application of Ohm’s Law in full circuits
  • Final Project: Create a poster or presentation about the importance of electricity in daily life, including basic circuit design explanations

Spring Semester

  • Quiz 1: Electromagnetism and Magnetic Flux, Faraday’s Law of Electromagnetic Induction, Lenz’s Law
  • Homework 1: Explain Faraday’s and Lenz’s laws with real-life examples (generators, transformers); Describe magnetic flux and its changes
  • Lab Activity 1: Build a simple electromagnetic induction setup; Measure effect of magnet speed on induced current
  • Quiz 2: Periodic and Oscillatory Motion basics; Wave types and properties (period, frequency, wavelength, velocity)
  • Homework 2: Calculate period, frequency, wavelength, velocity; Describe resonance and noise with examples
  • Lab Activity 2: Use a slinky/rope to create waves; Measure wave speed and calculate wavelength and frequency
  • Test 1: Sound topics including Doppler effect, wave comparison, and resonance
  • Group Project: Presentation on sound waves production, detection, Doppler effect; Demonstrate resonance
  • Quiz 3: Light: Reflection and Refraction basics; Light properties: colors and behavior
  • Homework 3: Explain reflection/refraction with everyday examples; Describe camera and eye image formation
  • Lab Activity 3: Investigate reflection angles; Observe refraction effect with pencil in water
  • Final Test: Comprehensive test covering waves, sound, and light topics, including problems on wave calculations and optics principles
  • Final Project: Visual poster or digital presentation explaining journey of light from source to eye/camera including reflection, refraction, color, and image formation

Recommended Resources for Waves, Sound, and Light

  1. Khan Academy — Waves and Sound
    Lessons covering wave properties, sound, Doppler effect, and light.
    https://www.khanacademy.org/science/physics/waves-and-sound
  2. PhET Interactive Simulations — Wave on a String & Sound
    Explore wave types, frequency, resonance, and sound waves.
    https://phet.colorado.edu/en/simulation/wave-on-a-string
  3. The Physics Classroom - Sound and Light
    Clear explanations and interactive tutorials on sound waves, light reflection, and refraction.
    https://www.physicsclassroom.com/class/waves
    https://www.physicsclassroom.com/class/refln
  4. National Geographic Kids — Light and Sound
    Fun facts and videos to spark curiosity about sound and light.
    https://kids.nationalgeographic.com/science/article/light
    https://kids.nationalgeographic.com/science/article/sound
  5. Book: "Waves and Sound" by Richard Spilsbury
    A simple book with experiments and explanations on waves and sound.

General Tips for Supporting Your Child

  • Use Visuals & Hands-On Activities: Encourage your child to build simple circuits, observe light reflections, or make waves with a rope or slinky.
  • Watch Videos Together: Pause and discuss key points to help your child absorb concepts better.
  • Practice Problems: Use worksheets and online quizzes to reinforce understanding of formulas and laws.
  • Encourage Questions: Prompt your child to ask “why” and “how” to deepen comprehension.