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2023/24 Annual Teaching Plans: Physical Sciences: Grade 11
Term 1
Week 1
- CAPS Topics (2 hrs): Mechanics: Vectors in two dimensions
Week 2
- CAPS Topics (4 hrs): Mechanics: Vectors in two dimensions
Week 3
- CAPS Topics (2 hrs): Mechanics: Vectors in two dimensions
Week 4
- CAPS Topics (2 hrs): Mechanics: Newton’s laws
Week 5
- CAPS Topics (4 hrs): Mechanics: Newton’s laws
Week 6
- CAPS Topics (4 hrs): Mechanics: Newton’s laws
Week 7
- CAPS Topics (4 hrs): Mechanics: Newton’s laws
Week 8
- CAPS Topics (4 hrs): Mechanics: Universal Law of Newton
Week 9
- CAPS Topics (4 hrs): Electricity & Magnetism: Electrostatics
Week 10-11
- CAPS Topics (4 hrs): Electricity & Magnetism: Electrostatics
- Control Test (2 hrs)
Topics, Concepts, Skills and Values
Mechanics: Vectors in Two Dimensions
- Definition of Resultant: The resultant of multiple vectors is a single vector that has the same effect as the combined action of the original vectors.
- Determine the Resultant: Use a maximum of four vectors on a Cartesian plane.
- Component Method: Break down vectors into horizontal and vertical components.
- Sketch Vertical (Ry) and Horizontal (Rx) Vectors: Illustrate both components on a Cartesian plane.
- Magnitude Calculation: Use the Pythagorean theorem, where .
- Direction Calculation: Utilize simple trigonometric ratios.
- Graphical Determination: Methods include tail-to-head or tail-to-tail (parallelogram method).
- Closed Vector Diagram: Explanation of diagrams where the vector returns to the origin by connecting their tails.
Mechanics: Newton’s Laws
- Key Definitions:
- Normal Force, : The support force exerted upon an object in contact with another stable object.
- Frictional Force, : The force that opposes the motion of an object.
- Static Frictional Force, : The force that keeps an object at rest from moving.
- Kinetic Frictional Force, : The friction that opposes the motion of moving objects.
- Properties of Frictional Force:
- Proportional to the normal force.
- Independent of the area of contact.
- Force Diagrams: Draw and interpret free-body diagrams to visualize forces acting on an object.
- Resultant Force: Calculate the net force of multiple forces acting on an object.
Newton's Laws
- Newton's First Law: An object at rest remains at rest, and an object in motion continues in motion unless acted upon by a net external force.
- Inertia: The tendency of an object to resist changes in its state of motion; directly proportional to mass.
- Practical Implication: Importance of seatbelts in vehicles as a safety measure exemplified by inertia.
- Newton's Second Law (in symbols):
- Application in:
- Horizontal motion with/without friction.
- Motion on inclined planes.
- Vertical motion scenarios (e.g., lifts).
- Newton's Third Law: For every action, there is an equal and opposite reaction; identification of action-reaction force pairs and characteristics.
- Universal Law of Gravitation:
- ; where is the gravitational force, is the gravitational constant, and are the masses, and is the distance between the centers.
- Weight Calculation: , with gravitational acceleration derived from for Earth and similarly for other planets.
Electrostatics
- Coulomb's Law in 1D and 2D: Calculation using the formula for electrostatic forces, .
- Electric Field Definition: Region where an electric charge experiences a force.
- Field Configuration Diagrams: Draw field patterns for systems like point charges.
- Magnitude of Electric Field: and derive for point charges.
Term 2
Week 1 to Week 11
- CAPS Topics: Focus on concepts in Electricity and Magnetism, Matter and Material, and corresponding assessments.
Assessment Structure
- Informal Assessments: Homework, informal tests, practicals on resultant forces, frictional forces impact.
- Formal Practical: Newton's second law verification and related experiments.
Additional Terms and Concepts
- Resources for Learning: Include experiments, study guides, previous papers, videos, and simulations (e.g., PhET).
Term 3 and Term 4
Control Tests and Assessments
- Detailed study on chemical changes, energy relationships, and types of reactions; including a significant focus on review and consolidation before final exams.