PHYSICS NOTES FOR FORM TWO We have:Notes 1 and Notes 2Notes 1To view the Notes, click the following links below: TOPIC 1 – STATIC ELECTRICITY TOPIC 2 – CURRENT ELECTRICITY TOPIC 3 – MAGNETISM TOPIC 4 – FORCES IN EQUILIBRIUM TOPIC 5 – SIMPLE MACHINES TOPIC 6 – MOTION IN STRAIGHT LINE TOPIC 7 – NEWTON’S LAW OF MOTION TOPIC 8 – TEMPERATURE TOPIC 9 – SUSTAINABLE ENERGY SOURCESNotes 2To view the Notes, click the following links below:1. STATIC ELECTRICITY2. CURRENT ELECTRICITY3. MAGNETISM4. FORCES IN EQUILIBRIUM5. SIMPLE MACHINES6. MOTION IN A STRAIGHT LINE7. NEWTON’S LAWS OF MOTION8. TEMPERATURE9. SUSTAINABLE ENERGY SOURCESANSWERS TO NUMERICAL QUESTIONSAPPENDIXGLOSSARYIMPORTANCE…
Author: Msomi Bora
TOPIC 9: SUSTAINABLE ENERGY SOURCES Sustainable energy, specifically renewable energy or green energy, is an energy source which can be replenished, that is essentially inexhaustible. Sustainable sources of energy include solar, wind, water, biomass and geothermal. Non renewable energy sources include coal, oil and natural gas. Water Energy The Generation of Electricity from Water Explain the generation of electricity from water Energy sources are areas of origin of a particular kind of energy. There are two types of sources of energy namely: Renewable sources Non- renewable sources Renewable sources:These are the energy sources, which can be turned into use again…
TOPIC 8: TEMPERATURE Concept of Temperature The Term Temperature Define the term temperature Temperature is property of a body, which decides which way heat will flow when it is placed in contact with another body. Temperature is defined as the degree of hotness or coldness of a body. It is the one of the factors which make scientists to determine the amount of heat energy possessed by a body. The SI Unit of Temperature State the SI unit of temperature The SI unit of temperature is Kelvin (K). Kelvin scale is known as absolute temperature scale or thermodynamic scale. The…
TOPIC 7: NEWTON’S LAW OF MOTION 1st Law of Motion The Concept of Inertia Explain the concept of inertia Inertia is the tendency of a body at rest to resist motion when forced to move and a body in motion to continue moving when abruptly stopped.A good example is a passenger sitting on a seat in a bus at rest. When the bus starts moving the passenger will experience a backward push. This is because the body of the passenger was continuing in its state of rest when the bus was starting its motion. Similarly, when the bus stops abruptly the…
TOPIC 6: MOTION IN STRAIGHT LINE Motion is the change of position of an object from one place to another. It is the study of the movement of a body from one point to another. It studies of all aspects of motion including distance and displacement, speed and velocity, acceleration and deceleration e.t. c. There are two types of motions; Circular motion- Is the motion of an object in a circular path. Examples; Motion of the electron around the nucleus of an atom, Revolutionary movement of the earth around the sun, Motion of a car around a cornered road. Linear…
TOPIC 5: SIMPLE MACHINES A simple machine is a non-powered mechanical device that changes the direction or magnitude of a force. In general, they can be defined as the simplest mechanisms that use mechanical advantage (also called leverage) to multiply force. A simple machine uses a single applied force to do work against a single load force. Ignoring friction losses, the work done on the load is equal to the work done by the applied force. Concept of Simple Machines Nowadays man can do many things without necessarily using much of his own energy. Many can fly by using aeroplane,…
TOPIC 4: FORCES IN EQUILIBRIUM Moment of a Force The Effects of Turning Forces Explain the effects of turning forces A force is a push or pull which when applied to a body it will change its state either by stopping it if it was in motion or making it move if it was at rest. If a body under the action of a net externalforceis allowed to rotate about a pivot, the body will tend to turn in the direction of the applied force. Examples of turning effect…
TOPIC 3: MAGNETISM Concept of Magnetism The Origin of Magnetism Explain the origin of magnetism Chinese were the first to use the metal magnetite called lodestone. A Lodestone was capable of attracting small iron pieces and it was used as a crude navigation compass by Greeks. Lodestones were the earliest magnets. Iron, nickel and cobalt are the only naturally occurring magnetic materials. Magnet has two ends known as magnetic poles in which the greatest attraction power is concentrated. Magnetic and Non-magnetic Materials/Substances Identify magnetic and non-Magnetic material/substances Magnetic substances These are substances which have a property of being attracted by a magnet.E…
TOPIC 2: CURRENT ELECTRICITY Electric current is the rate of charge flow past a given point in an electric circuit, measured in Coulombs/second which is named Amperes. In most DC electric circuits, it can be assumed that the resistance to current flow is a constant so that the current in the circuit is related to voltage and resistance by Ohm’s law. The standard abbreviations for the units are 1 A = 1C/s. Concept Of Current Electricity Current Electricity Define current electricity Current electricity is a fundamental quantity and is the amount of charge passing a given point in a circuit…
TOPIC 1: STATIC ELECTRICITY Concept of Static Electricity The Concept of Static Electricity Explain the concept of static electricity Static electricity refers to the accumulation of electric charges on the surface of an object. These charges are in a stationary state (at rest). The study of electric chargers at rest is known as electrostatics. It studies about the charges at stationary state. These charges can be moved away from the object y means of electric current when connected to the circuit. The Orign of Charges Explain the origin of charges The knowledge of static electricity came as early as the…
