Family Health: Sanitation

Length: 0 minutesComplexity: Standard

<h1><strong>FAMILY HEALTH - SANITATION</strong></h1> CONTENT <ol> <li>The Meaning of Sanitation</li> <li>Types of Sanitation</li> <li>How to Carry Out Personal Cleanliness</li> <li>Advantages of Observing Personal Cleanliness</li> <li>Disadvantages of Not Observing Personal Cleanliness</li> <li>The Importance of Sanitation</li> </ol>   <h2><strong>The Meaning of Sanitation</strong></h2> Sanitation is the removal of all kinds of waste that could be considered unpleasant from our immediate environment, in order to keep ourselves and our environment clean and healthy. <h2><strong>Types of Sanitation</strong></h2> The types of sanitation are as follows: (i) <strong>Environmental Sanitation:</strong> This refers to the practice or ways of keeping our surrounding clean and healthy by removing all kinds of waste from our rooms, toilets, bathrooms, kitchens and surroundings such as markets, schools etc. (ii)<strong> Personal cleanliness:</strong> This is the keeping of one’s body and personal belongings neat, clean and tidy always. Personal cleanliness is important for health because it prevents very tiny organisms (micro-organisms) which can cause diseases.   <h2><strong>How to Carry Out Personal Cleanliness</strong></h2> We can carry out personal cleanliness by doing the following:

Calculation of Gravitational Force

Length: 0 minutesComplexity: Standard

<h1><strong>CALCULATION OF GRAVITATIONAL FORCE</strong></h1> CONTENT <ol> <li>Definition of Gravitational Force</li> <li>Calculation of Gravitational Forces</li> </ol>   <h2><strong>Definition of Gravitational Force</strong></h2> This is the force with which the earth pulls all objects towards its centre. It is also called force of gravity. The instrument used for measuring gravitational force is called spring balance. <h2><strong>Calculation of Gravitational Forces</strong></h2> The unit of force is Newton (the symbol is N). The unit was named after Sir Isaac Newton who first discovered the facts about gravity. The weight of a body is the force the earth exerts on it. <strong>All forces are measured in Newton.</strong> On the earth surface the universal value of acceleration due to gravity (g) is 9.8m/s<sup>2</sup> or 10m/s<sup>2</sup> To calculate gravitational force (Gf). The following formulae are used: 1. F = mg, used for calculation of gravitational force. <strong>Example 1:</strong> Calculate the gravitational force required to pull down a mango fruit of 10kg falling with acceleration of 5m/s<sup>2</sup>. <strong>Solution:</strong> F = mg, where F is unknown, m = 10kg, a = 5m/s<sup>2</sup> ∴ F = 10 × 5 = 50 N. <strong>Example 2:</strong>

Family Health: Refuse and Sewage

Length: 0 minutesComplexity: Standard

REFUSE AND SEWAGE</strong></h1> CONTENT <ol> <li>Meaning of Refuse and Sewage</li> <li>Methods of Refuse Disposal</li> <li>Cleaning Tools and Agents</li> </ol>   <h2><strong>Meaning of Refuse and Sewage</strong></h2> Refuse is a solid waste whether dry or wet which could cause land pollution e.g. nylon, paper, plastic, broken bottles, scraps, etc. Refuse wastes materials could be divided into 2 namely: biodegradable and non-biodegradable. Biodegradable materials are materials that can decompose or decay e.g. banana peels, dead leaves, dead animals, etc. Non-biodegradable things are materials that cannot be decomposed or decay e.g. metals, plastics, broken bottles, etc. Sewage is a liquid waste from the environment e.g. faeces, urine, wasted water from kitchens, bathrooms, etc. <img class="size-full wp-image-19606 aligncenter" src="https://classhall.com/wp-content/uploads/2018/06/refuse-and-sewage.jpg" alt="refuse and sewage" width="431" height="116" />   <h2><strong>Methods of Refuse Disposal</strong></h2> Refuse disposal methods include:

Friction: Balanced and Unbalanced Forces

Length: 0 minutesComplexity: Standard

<h1><strong>FRICTION: BALANCED AND UNBALANCED FORCES </strong></h1> CONTENT <ol> <li>Meaning of Friction</li> <li>Uses and Advantages of Friction</li> <li>Disadvantages of Friction</li> <li>How to Reduce Friction</li> <li>How to Reduce Friction</li> <li>Balanced and Unbalanced Forces</li> </ol>   <h2><strong>Meaning of Friction</strong></h2> The force that tries to stop a body from moving is called friction. Friction also means force that opposes motion. Friction can be reduced by lubrication i.e. adding oil and grease placed between the two surfaces in contact. The oil and grease are called lubricants. <h2 style="text-align: center;"><img class="size-full wp-image-36570 aligncenter" src="https://classhall.com/wp-content/uploads/2018/06/protection-from-friction.jpg" alt="Friction; Balanced and Unbalanced Forces - Protection from friction" width="396" height="239" /><strong>Protection from Friction</strong></h2> <span style="color: #008000;">Friction is a force that occurs when one object moves against another. The ceramic tiles on the outside of the space shuttle protect it from the great friction caused when the shuttle re-enters Earth’s atmosphere.</span> <h2><strong>Uses and Advantages of Friction</strong></h2> The following are the uses and advantages of friction:

© [2022] Spidaworks Digital - All rights reserved.