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Importance of Physical Exercise according ot age and sex

Importance of Physical Exercise according ot age and sex According to Age: Physical education is applicable for people of all ages. But programmes of physical education differ likings and dislikings for different age-groups. Not only physical exercise but also food, likings and dislikings and physical abilities are different for different age-groups. For example, physical ability of children is not equal to that of adults.  So to develop the abilies exercise through games should be introduced accordingly. Frog jumps, touch and back, crow jump or recreational games are some physical activities that can improve physical ability of children. Selection of exercise and games for adolescent should be done systematically. Standing in a line, exercise of hands and legs, running with a ball, touch and play, etc. and games and physcial exercise can be used to develop physical abilities of children. Remember, children and adolescents should not participate in weight lifting exercise. It causes h
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Dresses to be use in Laboratory

During working in the laboratory, chemicals may spill to our bodies. These may harm our clothes and skin. It is necessary to wear cotton based clothes in order to protect the body from the harmful effects of chemical substances. Laboratory entrance is restricted to wear of cotton aprons.  Synthetic clothes are not allowed in the laboratory. You may like Do I need car insurance? What is car insurance? How could I get cheaper car insurance? What is auto insurance? Why Adulterant food is the barrier to sound health? What are the producers? What are food preservatives? What is food chain? What is tertiary consumer?
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Laboratory Principles: Dress, Safety Glass, Mask and Hand Gloves

Laboratory is a very important place, where research is carried out for human welfare. Chemical laboratory is unique place to know and develop something new. Different types of chemicals are generally used in the laboratory. Among these, some are volatile, hazardous and very harmful to human health. The consequences could be severe if someone does not have any idea of the laboratory guidelines. It is very important to remember that proper knowledge of the guidelines for using laboratory can ensure self-safety and safety of classmates as well. Some important guidelines regarding the use of laboratory are given below: Dresses to be used in the laboratory Use of safety glass in the laboratory Use of mask in the laboratory Use of hand gloves in the laboratory You may like Do I need car insurance? What is car insurance? How could I get cheaper car insurance? What is auto insurance? Why Adulterant food is the barrier to sound health? What are the producers? What are food preservativ
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Objectives of Physical Education

Objectives of Physical Education Generally, we do not the difference between an aim and an objective in most cases. We often use them interchangeably. But these two terms are not synonymous. There are differences between them. The aim is the final goal whereas an objective is a short and specific step towards the goal. For example, in the case of your climbing the stairs to reach the roof, the roof is the aim and every stem of the stairs is an objective. An aim exists in human imagination which can not be depicted in reality. But an objective is real. Man can achieve the objective and even it is possible to measure. Physical educationists have mentioned several interims measures to attain the aims. These measures are known as the objectives of physical education. According to Williams, the aim of physical education is the all-around development of personality through the development of physical, social, and other areas of an individual. Book Walters states that the aim of physical
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Efficiency

Efficiency Efficiency: The ratio of the amount of work we get from an engine given is its efficiency. Effective Energy: The energy that we get from an engine is its effective energy. What do you mean by 70% efficiency of a pump? 70% efficiency of an engine means 100 J input of energy in the engine yields 70 J efficient energy and the rest of 30 J energy is wasted. Secondary Physics Chapter - 1 :  Physical Quantities and Their Measurements Chapter - 2 :  Motion Chapter - 3 :  Force Chapter - 4 :  Work, Power, and Energy Chapter - 5 :  State of Matter and Pressure Chapter - 6 :  Effect of Heat on Matter Chapter - 7 :  Waves and Sound Chapter - 8 :  Reflection of Light Chapter - 9 :  Refraction of Light Chapter - 10 :  Static Electricity Chapter - 11 :  Current Electricity Chapter - 12 :  Magnetic Effects of Current Chapter - 13 :  Modern Physics and Electronics Chapter - 14 :  Physics to Save Life  
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Liquid Thermometer

Liquid Thermometer Liquid thermometers are based on the principle of change of volume of the liquid with change in temperature. These thermometers are suitable for a narrow range of measurements. The most commonly used liquids are (i) mercury and (ii) alcohol. The range of the mercury thermometer is - 39°C to 357°C. Alcohol thermometers are used only to measure temperature near ice points. Mercury Thermometer Mercury is usually selected for use in liquid in glass thermometers for the following reasons: It has a low specific heat and hence it absorbs little heat from the body whose temperature is being measured. It is a good conductor of heat and takes the temperature of the body quickly. It can be easily seen in a fine capillary tube and the thermometer can be made sensitive. It does not wet the wall of the glass tube. This is an important point for the construction of a thermometer. It has a uniform coefficient of expansion over a wide range of temperatures. It remains a liquid ov
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Laws of Reflection

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In the Figure Illustrates the terms that we use in the study of reflected light. Represents the surface of a plane. AO, called the incident ray, is the direction in which light falls onto the reflecting surface. O is the point of incidence and OR the, reflected ray. The angles, which the incident and reflected rays make with ON, the normal or perpendicular to the reflected surface at the point of incidence, are, called the angles of incidence and reflection respectively. Laws of reflection are - ♦ The incidence ray, the reflected ray and the normal at the point of incidence all lie in the same plane. ♦ The angle of incidence is equal to the angle of reflection. You may like Do I need car insurance? What is car insurance? How could I get cheaper car insurance? What is auto insurance? Why Adulterant food is the barrier to sound health? What are the producers? What are food preservatives? What is food chain? What is tertiary consumer?
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Importance of physical education

Importance of physical education Physical education maintains the coordinated development of the body and mind. Any education is not complete without physical education. Physical education plays a vital role in including those qualities into people, which help individuals to grow as healthy, emotionally balanced, and responsible citizens. Men love recognition by society. It is through recognition that an individual's personality is developed.  Therefore, physical education has a significant role in developing leadership and personality. Our body is a combination of some organs. Again, each organ consists of different types of muscles, bone, artery, vein, etc. In order to keep the body fit a number of systems are functional. As a result of lack of balanced nutrition, lack of necessary physical movement, and required rest and sleep, the body does not develop properly and fails to keep fit. In fact, modern education puts emphasis on physical and mental development. The necessity of ph
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The Importance of Information and Communication Technology

The Importance of Information and Communication Technology Questions and Answers: What is Computer? Ans: Computer is an electronic calculation device. What is internet? Ans: Internet is the network of networks. Hence, internet can be said to be the short form of International Network. What is modem? Ans: Modem is a device which transforms digital sign to analog sign (Modulation process) and alanog sign to digital sign (Demodulation process). Modem is the short form of Modulator and demodulator. What is E-mail? Ans: E-mail is an electric mail which is composed of sevral letters and anyone from any place of the world can communicate through E-mail. What is Robot? Ans: A robot is an electronic machine with artificial intelligence and it can run by itself or by a remote controller. What do you mean by 'Broadcast'? Ans: Broadcast is a one-way communication system where a person or any organization can communicate with many people or organizations. What are two-way commun
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How to make a telephone call

How  to make a telephone call To make a phone call, first of all, I have to lift the receiver. If I have the dial tone (a continuous sound). I dial the number I want. The person at the other end of the wire will say 'Hello', Then, I have to ask: Could I speak to so and so?' The person will reply: 'Speaking and I have to tell him/her what I want to say.  Thus, a phone call is made. You may like How to make a cup of coffee Write simple instructions on 'Washing clothes'. Write simple instructions on 'Making toast'. Write simple instructions on 'How to make Oral Saline'. Write simple instructions on 'How to cook fried eggs.' How to make Mango Pickle. How to make a loaf of bread How  to make a telephone call How to make a cake How to make sandwiches How to be a good student How to stay healthy
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