<h1><strong>CLASSIFICATION OF NON LIVING THINGS</strong></h1> CONTENT <ol> <li>Classification of Non-living Things</li> <li>Metals - Properties and Uses of Metals</li> <li>Non-Metals - Properties and Uses of Non metals</li> </ol> <br> <h2><strong>Classification of Non-living Things</strong></h2> Non-living things in the environment can be grouped into metals and non-metal depending on their properties. <h2><strong>Metals</strong></h2> They are generally solids except for mercury, which exists in liquid state. Examples are copper, iron rod, empty cans, aluminum, silver, gold, lead etc. <img class="size-full wp-image-32424 aligncenter" src="https://classhall.com/wp-content/uploads/2018/06/metals-and-non-metals.jpg" alt="Classification of non living things - Metals and non metals" width="316" height="147" /> <p style="text-align: center;"><strong>Copper-Coated Pennies</strong></p> <span style="color: #008000;">Most coins used the United States contain copper. Pennies, <em>shown here,</em> are made of zinc with a thin coating of copper. They actually have less copper than other U.S. coins!</span> <h3><strong>Properties of Metals</strong></h3> The following are the properties of metals:

<h1><strong>MEANING, SOURCES AND FORMS OF ENERGY </strong></h1> CONTENT <ol> <li>Meaning of Energy</li> <li>Sources of Energy</li> <li>Forms of Energy</li> </ol>   <h2><strong>Meaning of Energy</strong></h2> Energy is the ability or capacity of the body to do work. Anything which possesses the ability to exert a force is having energy. Energy is a measure of the ability to do work and is absolutely necessary for everything including life itself. For example, if an object is moved from one point to another, work has been done. Work requires the use of energy. It is the energy that enables us to do work. <h2><strong>Sources of Energy</strong></h2> Energy is gotten from the following sources:

<h1><strong>TRANSFORMATION AND USES OF ENERGY</strong></h1> CONTENT <ol> <li>Transformation of Energy</li> <li>Uses of Energy</li> </ol>   <h2><strong>Transformation of Energy </strong></h2> Energy changes happen daily around us. The law of Conservation of energy states that energy can neither be created nor destroyed but it can change from one form to another. The following are examples of transformation of energy: <ol> <li>Mechanical Energy → Heat energy e.g. rubbing two surfaces against each other</li> <li>Chemical energy → Light energy e.g. torch light battery.</li> <li>Sound Energy → Electrical energy e.g. microphone, loudspeaker</li>

<h1><strong>RENEWABLE AND NON-RENEWABLE ENERGY</strong></h1> CONTENT Renewable Energy <ol> <li>Meaning of Renewable Energy</li> <li>Uses/Advantages of Renewable Energy</li> <li>Misuse/Disadvantages of Renewable Energy</li> </ol> Non-renewable Energy <ol> <li>Meaning of Non-renewable Energy</li> <li>Uses/Advantages of Non-renewable Energy</li> <li>Misuse/Disadvantages of Non-renewable Energy</li> </ol>   <h2><strong>Renewable Energy </strong></h2> <h3><strong>Meaning of Renewable Energy</strong></h3> Renewable is the energy from a source that can last forever or that is replaced naturally. Examples of renewable energy are: (i) Solar energy (ii) Wave energy (iii) Hydro-energy from hydroelectric dams that have generators turned by water to produce electricity (e.g. Kanji dam, Shiroro dam). (iv) Biomass/Biofuels (v) Wind energy which is a source of energy used to run windmills to produce electricity. Wind power is not common in Nigeria as in overseas countries. Sun, wind and water will always exist and hence termed renewable energy. <h3><strong>Uses/Advantages of Renewable Energy</strong></h3> Renewable energy is useful or advantageous for the following reasons:

<h1><strong>ENERGY AND SOCIETY </strong></h1> CONTENT <ol> <li>Energy and Society</li> <li>Effects of Energy on Society</li> <li>Ways Through Which Lack of Energy Supply Affects Societal Development</li> </ol>   <h2><strong>Energy and Society</strong></h2> Energy is one of the basic needs of all mankind that is necessary for survival and societal development. <p style="text-align: center;"><img class="size-full wp-image-32437 aligncenter" src="https://classhall.com/wp-content/uploads/2018/06/energy-and-society-solar-power.jpg" alt="Renewable and Non-renewable energy - Energy and society - Solar power" width="451" height="263" /><strong>Solar Power</strong></p> <span style="color: #008000;">These solar panels convert energy from sunlight directly into electricity. Solar power is a renewable source of energy - it will never run out.</span> <h2><strong>Effects of Energy on Society</strong></h2> Energy has become more necessary in the following areas: