Physics topics for e-assessment

Forces and Energy (Motion, Graphs, Newton's Laws of Motion, Energy Transfer)

  • Force Definition: A push or pull that can start motion, stop movement, or change direction.

  • Motion Definition: The act of changing position over time measured by speed and direction.

  • Motion Graphs: Visual representations to help understand motion (e.g., Distance-Time Graph).

  • Newton's Laws of Motion:

  • First Law: An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an external force.

  • Second Law: The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (Formula: F=maF = ma).

  • Third Law: For every action, there is an equal and opposite reaction.

  • Energy Transfer: The movement of energy from one object to another (e.g., food provides energy).

Electromagnetism (Magnetic Fields, Circuits)

  • Magnetic Field: The invisible area surrounding a magnet.

  • Magnet Properties: Magnets have two poles; opposite poles attract and like poles repel.

  • Electric Circuits: Pathways for electricity to flow, likened to a loop road.

  • Parts of a Circuit: Battery: Provides energy, Wire: Serves as the path for electricity, and Light Bulb: Utilizes energy to produce light.

Waves (Longitudinal/Transverse Waves, Sound, Reflection, Refraction, Diffraction, EM Spectrum)

  • Wave Definition: A method of energy transmission through space or matter.

  • Types of Waves:

  • Transverse Waves: Particles move up and down while the wave moves forward (e.g., ocean waves).

  • Longitudinal Waves: Particles move back and forth in the same direction as the wave (e.g., sound waves).

  • Sound Propagation: Sound travels as vibrations through the air detected by the ear.

  • Wave Phenomena: Reflection: Occurs when waves bounce off surfaces (e.g., light reflecting off a mirror). Refraction: The bending of waves as they enter a new material (e.g., a straw appearing bent in water). Diffraction: The spreading out of waves after passing through a narrow opening.

  • Electromagnetic Spectrum: Comprises various forms of energy, including:

  • Radio Waves - Microwaves - Infrared Waves - Visible Light - Ultraviolet Rays - X-rays - Gamma Rays (R,M,I,V,U,X,G)

  • Energy Forms: All waves in the electromagnetic spectrum move through space as energy.