Lesson Note on Physics SS1 Second Term
SCHEME OF WORK
Week One: Heat Energy, Concept of Heat and Temperature
Week Two: Thermometer (Types and Calculation)
Week Three: Expansivity I
Week Four: Expansivity II
Week Five: Heat Transfer
Week Six: Electric Charges Production
Week Seven: Gold leaf Electroscope
Week Eight: Field Concept and Types of Field
Week Nine: Electric Field
Week Ten: Production of Continuous Electric, chemical energy, heat energy, mechanical energy and solar energy
Week Eleven: Revision
Week Twelve: Examination
Physics Lesson Note For SS1 (Second Term)
Below are the 2022 complete Physics lesson notes for SS1 Second Term
Week One: Heat Energy, Concept of Heat and Temperature
INTRODUCTION:
Knowing the difference between heat and temperature is important. It can lead to a clearer understanding of energy. Above is a picture of an ice cube melting in a small dish. The ice, water, dish, and are experienced heat exchanges and temperature changes. In this section we will define both heat and temperature and hopefully reach an understanding of how they are related, but not identical ideas. What follows are introductions. To learn more, click here.
Week Two: Thermometer (Types and Calculation)
INTRODUCTION:
A thermometer is a device that gauges temperature by measuring a temperature-dependent property, such as the expansion of a liquid in a sealed tube. The Greco-Roman physician Galen (c. 129-c. 199) was among the first thinkers to envision a scale for measuring temperature, but the development of a practical temperature-measuring device—the thermoscope—did not occur until the sixteenth century. To learn more, click here.
Week Three: Expansivity I
INTRODUCTION:
When heated, most solids and liquids expand. They almost contract when cooled. Expansion means an increase in the size of an object.
According to the kinetic molecular theory, when an object is heated the molecules acquire more kinetic energies which enables them to overcome their intermolecular forces. Therefore the vibrations of the molecules increase and their displacements about their mean positions increase. To learn more, click here.
Week Four: Expansivity II
INTRODUCTION:
When a solid is heated is to a particular temperature, the molecule it contains absorbs some kinetic energy since kinetic energy is the measure of velocity (i.e. the higher the kinetic energy, the higher the velocity of the molecules). These molecules move faster and collide with one another and with the wall of the system to the event that the strong molecular force of attraction is broken after several collisions and by so doing the system expands. Linear expansivity of solid (metal)is defined as the increase in length per unit rise in temperature. It is denoted by α and measured in K-1 or 0C-1 (SI unit). To learn more, click here.
Week Five: Heat Transfer
INTRODUCTION:
Heat flows from a body at a higher temperature to another at a lower temperature. This transfer of heat can happen in three ways: conduction, convection and radiation.
Conduction
It is our everyday experience but when we pour hot water into an aluminium cup, the handle of the cup soon feels hot to the touch. If you keep a silver spoon into a hot tea, the handle of the spoon very quickly feels hotter than it was before. The heat from the hot water has been transferred along the metal handle to the other end of the cup or spoon by the process of conduction. To learn more, click here.
Week Six: Electric Charges Production
INTRODUCTION:
Production of Charges
1. Ensure your hair is dry, then rub the barrel of a plastic biro or ball pen vigorously on it. Hold the rubbed pen near some small pieces of paper and observe the effect of the pen on the paper.
2. Rub a plastic ruler vigorously against the sleeve of your shirt or blouse. Then hold the rubbed ruler over small pieces of paper and observe the effect on the paper. To learn more, click here.
Week Seven: Gold leaf Electroscope
INTRODUCTION:
A gold leaf electroscope measures the potential difference between the leaf and the base (or earth). The leaf rises because it is repelled by the stem (support). The leaf and its support have the same type of charge. A typical school electroscope will show a deflection for a charge as small as 0.01 pC (the unit pC is a pico coulomb, 1×10-12 coulombs, equivalent to the charge on over 6 million electrons). To learn more, click here.
Week Eight: Field Concept and Types of Field
INTRODUCTION:
We define a field as a region of space under the influence of some physical agency such as gravitation, magnetism and electricity.
Force fields are forces whose sources do not require contact with the body to which they are applied. We identify such force fields as gravitational force, electric force, magnetic force and electromagnetic force. To learn more, click here.
Week Nine: Electric Field
INTRODUCTION:
An electric field is a region of space where a charged body experiences an electric force.
The electric field is just a way of describing the action at a distance of one charge upon another. Such a field is another example of a force field and is represented by electric lines of force. Since force is a vector quantity, an electric force field has both magnitude and direction. To learn more, click here.
Week Ten: Production of Continuous Electric, chemical energy, heat energy, mechanical energy and solar energy
INTRODUCTION:
Production of Electric Current
An electric current or a continuous flow of charge can be generated from (a) chemical energy (b) heat energy (c) mechanical energy (d) solar energy.
Electricity is produced from chemical energy through the use of electric cells. A cell is a device for converting chemical energy into electrical energy. To learn more, click here.
Week Eleven: Revision
This week, we would be doing a revision of all that we learned during the term.
Week Twelve: Examination
Afterwards, we would write an examination, which would test our knowledge of what has been taught so far.