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Family Health: Drug

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<h1><strong>FAMILY HEALTH - DRUG</strong></h1> CONTENT <ol> <li>The Meaning of Drug</li> <li>Types of Drugs</li> <li>Sources of Drugs</li> <li>Uses of Drugs</li> <li>Side Effects of Drugs</li> </ol>   <h2><strong>The Meaning of Drug</strong></h2> Drug can be defined as any substance that can affect the body positively or negatively. Drugs can be taken into the body system directly or indirectly through swallowing, injection or inhalation. Examples of drugs: Chloroquine, Phensic, Panadol, Kola nut, Alcohol, Indian hemp etc. <h2><strong>Types of Drugs</strong></h2> There are two types of drugs, namely:

Friction: Balanced and Unbalanced Forces

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<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:

Classification of Drug; Drug Abuse

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<h1><strong>CLASSIFICATION OF DRUGS AND DRUG ABUSE</strong></h1> CONTENT <ol> <li>Classification of Drugs</li> <li>What is Drug Abuse?</li> <li>How Drugs Can be Abused</li> <li>Misuse of Drugs</li> <li>Other Substances that Can be Abused<strong> </strong></li> </ol>   <h2><strong>Classification of Drugs </strong></h2> There are five classes of drugs that people mostly abuse, namely: (i)<strong> Narcotics</strong> e.g. Opium (ii)<strong> Sedatives and Hypnotics</strong> e.g. Barbiturates (iii)<strong> Tranquilizers</strong> e.g. Valium (iv)<strong> Hallucinogens</strong> e.g. LSD (Lysergic acid diethylamide) and Marijuana. (v)<strong> Stimulants</strong> e.g. Amphetamine, Cocaine

Gravitational Force and Weightlessness

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<h1><strong>GRAVITATION AND WEIGHTLESSNESS</strong></h1> CONTENT <ol> <li>Meaning of Gravitation</li> <li>Effect of Gravitation on Objects</li> <li>Weightlessness</li> </ol>   <h2><strong>Meaning of Gravitation</strong></h2> Gravitation is a type of force that acts on a body across a distance, without any contact between the source and the body. The earth exerts a gravitational force on bodies by which it pulls these bodies towards its centre. This is why fruits fall to the ground from the tree and do not rise upwards. Also, when a stone is thrown upwards it soon stops its upward movement and starts to fall back to the earth. The force of gravity is a universal force. It exists between the earth and bodies and between planets and stars. <strong>Gravitational pull determines the weight of objects.</strong> The amount of force with which gravity pulls an object depends on three things, namely:

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