Tag Archives: Karnataka state board

Introduction to Geometric Progression | Karnataka State Board Class 10 Mathematics

Geometric progression is one of the topics covered by Karnataka State Board in class 10 mathematics.  Let us briefly discuss this topic. Introduction to Geometric Progression | Class 10 Mathematics Mathematics can become even more interesting if you observe number patterns and just play around with numbers.  Brilliant mathematicians like Shakuntala Devi did just that!  Now, try to observe what is happening in this series.  Which number will come next? 4, 16, 64, …. Yes, the next number is 256. The next number of the series is obtained by multiplying the previous number by 4. Thus, the series above will read as follows:  4, 16, 64, 256. This is an example of a geometric series or geometric progression. A geometric progression is generally represented in the following manner: a , ar, ar2, ar3, ar4….., Here, “a” represents the first term.  … Continue reading

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Function of Nephrons | Class 9 Science | Karnataka State Board

The human body is simply amazing.  Each organ of the body like the heart, lungs, kidneys, etc, seem to silently go about helping our body sustain itself as we perform our daily activities of living.  Let us briefly review how the nephrons of the kidneys function and their importance.  This is a topic that is studied in science in class 9, Karnataka State Board. What are nephrons? Nephrons can be defined as the basic functional and structural unit of the kidney.  Can you guess how many nephrons are present in one kidney?  It is an unbelievable number.  Approximately a million minute nephrons are present in the kidney. Function of Nephrons The three functions of nephrons are as follows: Removing waste in the form of urine. Maintaining normal electrolyte levels. Regulating the blood pressure. The nephron in fact acts like a … Continue reading

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Introduction to Frequency Distribution | Class 8 Maths | Karnataka State Board

What is frequency? Frequency can be defined as how often something occurs.  The concept of frequency is studied as a maths topic in class 8, Karnataka State Board.  Let us briefly review the topic Frequency and Frequency Distribution. Imagine that you are a member of the local library.  If you borrow and read 2 books in January, 4 books in February and 3 books in March.  Then, the frequency of the same was 2, 4 and 3 respectively. What is frequency distribution? How often something occurs can vary with the data being distributed.  The distribution of the frequency of an occurrence is the frequency distribution.  The frequency distribution can be represented in a simple tabular form for the easy garnering of information. For example, you can throw a dice 10 times and note down what number shows up.  Imagine that … Continue reading

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Acids, Bases and Salts | Class 7 Science | Karnataka State Board

Acids, bases and salts is a class 7 science topic covered by Karnataka State Board and many other educational boards.  Let us briefly go through this topic. You may have heard people state that lemon and orange contain citric acid.  How does a lemon taste?  What gives it that taste?  What about tamarinds?  Yes, lemons, oranges and tamarinds are acidic and contain acids.  On the other hand, substances like baking powder and soap which you are familiar with are basic in nature. Indicators known as pH indicators are used to identify whether a substance is an acid or a base.  The most common indicator is the litmus indicator.  It is a natural indicator and is made from lichen material.  Indicators can also be made from other natural substances like turmeric and red cabbage. One interesting way of making an acid-base … Continue reading

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Nutrition in Animals | Class 7 Science | Karnataka State Board

Nutrition in animals is a class 7 science topic, Karnataka State Board.  Let us discuss this topic. Do animals make their own food like plants?  How do different animals obtain food? Heterotrophic nutrition involves breaking down of organic compounds obtained through external sources for an animal’s sustenance.  All animals are heterotrophic as they cannot make their own food and obtain their food through external sources. With regard to the mode of heterotrophic nutrition, animals are grouped in the following manner: Herbivores:  Herbivores are animals that get their food directly from plants. Carnivores:  Carnivores get their food by eating other animals. Omnivores:  Omnivores get their food from both plants and animals. Parasites:  Parasites derive their food by living and feeding on other live animals. Scavengers:  Scavengers obtain their food by feeding on the body of dead animals. Nutrition in animals involves five … Continue reading

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Combustion and Types of Combustion| Class 6 Science | Karnataka State Board

Combustion and types of combustion is one of the science class 6 topics covered under Karnataka State Board. Let us briefly review this topic. Watching a candle burning is something which you may have watched from time to time.  Can you think of all the factors that are required for a candle to burn?  Will the candle continue to burn if your teacher places a glass jar over it?  It will get extinguished.  Why?  What will happen if water is poured on the candle?  Yes, the candle will get extinguished again.  If no wax is present, will the candle be able to burn?  Can you now think of all the factors required for combustion? The three factors required for combustion are: Oxygen. Heat energy. A combustible substance. Combustion can be defined as a chemical reaction that occurs between substances in the presence of oxygen and … Continue reading

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