Physics SS 1 Curriculum Guides – Fields at Rest and in Motion – Description and Property of Fields, Electric Field and Gravitation Field

 

THEME – FIELDS AT REST AND IN MOTION

TOPIC 1 – DESCRIPTION AND PROPERTY OF FIELDS

 

INSTRUCTIONAL MATERIALS

1. Stones are any heavy objects

2. Bar magnets, horse show, magnets, compass needle,

3. Iron fillings, a bar magnet, horse shoe magnet

 

 

LEARNING OBJECTIVES

By the end of the lesson, students should be able to:

1. identify force fields.

2. identify the properties of a force field.

 

 

CONTENTS OF THE LESSON

FOCUS LESSONS 

1. Concept of Fields

2. Types of Fields

• gravitational field

• magnetic field

• electrical field

3. Properties of a Force Field

 

 

LESSON PRESENTATION

TEACHER’S ACTIVITIES

The teacher uses iron fillings and bar magnet to show field and field lines.

 

 

STUDENT’S ACTIVITIES

The students,

1. throw massive objects into the air and describe what happens.

2. play with magnets and use the compass needle to plot field lines.

 

 

LESSON EVALUATION

Students to distinguish types and properties of fields.

 

 

THEME – FIELDS AT REST AND IN MOTION

TOPIC 2 – ELECTRIC FIELD

 

INSTRUCTIONAL MATERIALS

1. Charts showing the lines of force

2. Two different metals. A cell thermocouple, a coil and a magnet, solar cells, cells, key, ammeters, voltmeters, resistors

3. Cells, resistors, ammeters, voltmeters, cell, bulb, different metals, plastics, wood, ceramics, etc.

3. Different types of wire

4. Electric motor, pulley set of weight, stop clock

5. Fuse wire, bulbs

6. Solar cell

 

 

LEARNING OBJECTIVES

By the end of the lesson, students should be able to:

1. draw electric lines of force around:

• isolate positive charge.

• isolate negative charge.

• two like charges placed near each other.

• two unlike charges placed near each other.

2. generate a continuous flow of charges.

3. explain electric current.

4. set up a simple electric circuit.

5. distinguish between conductors and insulators.

6. define resistance as opposition to flow of charges (electrons).

7. calculate the electrical work done in a given circuit.

 

 

CONTENTS OF THE LESSON

FOCUS LESSONS 

1. Electric Lines of Force

2. Potential Difference and Electric Current

3. Production of Electric Current

4. Electric Circuit

5. Electric Conduction through Materials

6. Ohm’s Law

 

 

LESSON PRESENTATION

TEACHER’S ACTIVITIES

The teacher,

1. show lines of force using a test positive charge.

2. demonstrate the production of a continuous flow of charge:

• chemical energy

• heat energy

• mechanical energy

• solar energy

3. illustrate the importance of fuses in electric circuits by setting up a short-circuit.

 

 

STUDENT’S ACTIVITIES

The students,

1. make electric circuit from an electric cell key, the ammeter voltmeter, and the resistors in:

• parallel

• series

2. measure current and potential difference for parallel or series arrangement of resistor.

3. classify common materials into conductors and insulators with the aid of an electric cell, an ammeter and a lamp.

4. investigate the effect of varying the potential difference between two points of a conductor.

5. investigate factors affecting electrical resistance.

6. investigate the relationship between mechanical and electrical energy.

7. measure electrical power.

 

 

LESSON EVALUATION

Students to,

1. explain the properties of electric field.

2. draw different field patterns around two charges (like and unlike charges).

3. solve simple problems involving current, pad, resistance in an electric circuit.

4. solve simple problems involving Ohm’s law.

5. differentiate electrical conductors from insulators.

6. students to solve problems on resistivity of a conductor at constant temperature.

7. students to solve problems on electrical power.

 

 

THEME – FIELDS AT REST AND IN MOTION

TOPIC 3 – GRAVITATIONAL FIELD

 

INSTRUCTIONAL MATERIALS

1. Ticker-timer and its accessories

2. Pendulum bob, string and retort stand

3. The globe

 

 

LEARNING OBJECTIVES

By the end of the lesson, students should be able to:

1. identify force fields from a set of forces.

2. explain why two solid bodies of different masses released from rest at the same point simultaneously fall to the ground at the same time.

3. describe the shape of the earth.

 

 

CONTENTS OF THE LESSON

FOCUS LESSONS 

1. Acceleration Due to Gravity

2. Shape and Dimension of the Earth

 

 

LESSON PRESENTATION

TEACHER’S ACTIVITIES

The teacher,

1. demonstrates the use of ticker-timer to determine acceleration due to gravity.

2. leads a discussion on the shape and dimension of the earth using the globe.

 

 

STUDENT’S ACTIVITIES

The students,

1. use ticker-timer to determine acceleration due to gravity.

2. use simple pendulum experiment to determine acceleration due to gravity.

 

 

LESSON EVALUATION

Students to,

1. explain the concept of acceleration due to gravity.

2. solve simple problems on objects moving vertically in a gravitational field.

3. describe the shape of the earth.