Objective To study the effect of ammonia concentration on the rate of gas diffusion and observe how distance affects the color change of red litmus paper.Tools Wide glass tube length ≥ 30 cm, closed at one end – red litmus paper squares – cotton piece soaked in concentrated ammonia solution – cotton......

Objective To investigate the effect of changing the shape of a solid (such as clay) on its mass and volume.Tools Clay – double-pan balance – graduated cylinder – water – plastic knife – paper pinSteps Weigh a piece of clay using the balance. Determine the volume of the clay by placing it in a gradua......

Objective To study the effect of temperature and surface area on the rate of water evaporation.Tools Dishes (2 large and 2 small) – water – electric lamp or heat/light source or direct sunlight – stopwatchSteps Pour equal amounts of water into all four dishes. Place two dishes (one large and one sma......

Objective To study the effect of rubbing a balloon with a piece of wool multiple times on the amount of static electric charge accumulated on it, by observing the number of puffed rice grains attracted to the balloon.Tools Inflated balloon – piece of wool – puffed rice – paper tissues – waterSteps S......

EnglishObjective To study the effect of different sucrose solution concentrations on the mass and texture of potato tissues, and to understand water movement across semi-permeable membranes by osmosis.Tools Large potatoes – cork borer – pen for pushing cylinders – 6 test tubes – test tube rack – suc......

Objective: To study the effect of the angle of incidence of light on the area of its spread and light intensity, and relate this to the occurrence of the four seasons.Materials: Lamp – squared paper – ruler or measuring tapeProcedure: Place the lamp vertically at a distance of 5 cm from the paper (a......

Objective: To determine the center of gravity of a regular-shaped object (such as a triangular lamina) and to verify that the center of gravity lies at the intersection point of the vertical lines drawn using a plumb line.Materials: Regular flat lamina – a nail fixed in a base – plumb line (nylon th......

Objective: To verify the role of electrical switches in controlling the lighting of bulbs, and to determine which switch controls each bulb by studying the path of electric current in the circuit.Materials: Three electrical switches – three electric bulbs (1.5 V) – three batteries (1.5 V) Insulated......

:Objective To study the effect of temperature on the respiration rate of germinating seeds by measuring water movement in a capillary tube as an indicator of respiration.:Tools Germinating seeds (wheat or peas) - Dead seeds (boiled) or glass beads as a control - Boiling tube Calcium hydroxide soluti......

:Objective To identify the presence of invisible air pollutants and demonstrate that air contains suspended particles such as dust and smoke that are not visible to the naked eye.:Tools White paper _ Adhesive material (Vaseline or oil) _ Adhesive tape _ Open place inside the room _ Smoke source:Step......

An experiment aimed at understanding the effect of water and sugar solution on po:Objective To study the effect of water and sugar solution on the length and texture of potato cylinders after immersion.:Tools Large potato - Cork borer - Pencil to push cylinders - Two test tubes - 20% sugar solution......

:Objective To identify the external and internal parts of the brain and examine neurons.:Tools Preserved sheep brain in formalin _ Dissection tray _ Dissection tools _ Pins _ Rubber gloves _ Microscope slide _ Light microscope (400× magnification):Steps External dissection: Place the brain convex si......

Keywords: Thermal insulation – Heat – Heat transfer – Fabric – Cooling – Heat retention

:Objective To understand how water affects the disintegration of different rocks, and to compare the resistance of rock types to water erosion.:Tools Transparent containers with lids _ Magnifying lens _ Water _ Sample of sandstone _ Sample of limestone:Steps Place each type of rock in a separate con......

:Objective To study the activity of the enzyme catalase and how it breaks down hydrogen peroxide, and to compare the activity between different enzyme sources (liver, potato, other plants):Tools Animal liver or plant alternative such as potato _ Mortar and Pestle _ Water _ Sand _ Test tubes _ Filter......

:Objective Identifying the parts of seeds and comparing dicotyledonous seeds and monocotyledonous seeds:Tools Samples of soaked seeds (such as beans and corn) _ Dishes _ Magnifying lens:Steps Examine the bean and corn seeds using the magnifying lens and observe the different parts of each seed Deter......

:Objective To compare the amount of energy possessed by two objects different in size and mass, and to study the effect of mass on the amount of transferred energy:Tools Golf ball • Large glass ball • Ruler • Balance • Container (tray) • Fine sand:Steps Fill the container with an even layer of fine......

:Objective To prove that larvae (worms) do not arise spontaneously from decaying meat, but are produced from eggs laid by flies, thus refuting the theory of spontaneous generation:Tools Two identical glass jars _ A piece of raw meat _ A piece of cloth (gauze) that allows air to pass through _ String......

:Objective Measuring the speed of sound in air practically using two microphones and a digital timer:Tools Two microphones _ Digital timer (in milliseconds) _ Meter ruler _ Hammer and metal plate:Steps We place the two microphones in a straight line and measure the distance between their centers We......

This experiment shows how electrical energy is converted into kinetic energy. When electric current flows through the circuit, it powers the motor, causing it to rotate. This motion represents kinetic energy.Keywords: Electrical energy – Kinetic energy – Electric current – Motor – Motion – Energy co......

Objective To understand how different amounts of water affect soil piles of various sizes and simulate the effect of rain on landformsTools Tray – 3 plastic cups with different amounts of soil – water – watering can – ruler – graduated cylinder – plastic spoonSteps Pour each cup of soil carefully in......

An experiment demonstrating the effect of static electricitygenerated by friction, where rubbing a cloth on a foam plateproduces an electric charge that creates attraction or repulsion,causing light objects to rise or remain suspended in the airwithout direct contact."Static_Electricity", "Friction"......

Bone Dissection