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    • Posted by Priyesh Jaiswal 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 0 answers
    ANSWER

    • Posted by Ashutosh Mohanty 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Yogita Ingle 7 years, 10 months ago

    The frictional force depends on following factors:
    (i) The frictional force on an object in a fluid depends on its speed with respect to the fluid.
    (ii) The frictional force also depends on the shape of the object and the nature of the fluid.

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    • Posted by Kushal Rai 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 3 answers

    Anjali Chauhan 7 years, 10 months ago

    Sound of mosquito

    0Thank You

    Annu Priya 7 years, 10 months ago

    Sound of mosquito

    0Thank You

    Ritika Meena 7 years, 10 months ago

    Sound of mosquito

    2Thank You

    ANSWER

    • Posted by Akhilesh Singh Kushwah 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Yogita Ingle 7 years, 10 months ago

    Polyester is made of repeating units of a chemical called ester. PET (Poly Ethylene Terephthalate) is a very familiar form of polyester. It is used for making bottles, utensils, films, wires and many other useful products. Polyester fabrics do not wrinkle easily and are easy to wash.

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    • Posted by Amitha Fathima 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Prerna Sodhi 7 years, 10 months ago

    uncultivated

    2Thank You

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    • Posted by Sohan Gope 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Rohan Vs 7 years, 10 months ago

    The drip system for giving water at different intervals to crop this is an modern system

    2Thank You

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    • Posted by Angel Biju 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 0 answers
    ANSWER

    • Posted by Pallavi P 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Adhiraj Garg 7 years, 10 months ago

    The group of glands of an organism that secrete those hormones directly into the circulatory system.

    1Thank You

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    • Posted by Sahil Zaffar 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 0 answers
    ANSWER

    • Posted by Navjot Kaur 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Adhiraj Garg 7 years, 10 months ago

    It can : Change direction. Change speed. Stop a moving object.

    1Thank You

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    • Posted by Shehzaan Kagzi 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 0 answers
    ANSWER

    • Posted by Rishabh Chauhan 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Harsh Singh Nigaltiya 7 years, 10 months ago

    I don't no

    1Thank You

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    • Posted by Muhammad Hamza 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Akhilesh Singh Kushwah 7 years, 10 months ago

    Vitamin c and d

    1Thank You

    ANSWER

    • Posted by Menta Dheeraj 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Yogita Ingle 7 years, 10 months ago

    Loudness of sound depends on amplitude of vibration. Loudness of sound is directly proportional to square of amplitude of vibration. Louder sound has higher amplitude, while quieter sound has lower amplitude. Loudness is expressed in terms of decibel. The noise becomes physically painful above 80 dB.

    3Thank You

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    • Posted by Mahendra Singh Dhoni 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Arya Tiwari 7 years, 10 months ago

    Because, the painter wants to put out the old paint and paints new colour or same in white washing of walls.

    1Thank You

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    • Posted by Sukhman Chhina 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Yogita Ingle 7 years, 10 months ago

    The kabaddi players rub their hand with dry soil due to these reasons--
    1)Their Sweat won't make their hands wet as soil will absorb moisture.
    2) It will give roughness to their hands.
    3) It will increase friction between their hands and the opponent's body so that they can get a better grip on them.

    2Thank You

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    • Posted by Vikash Gopalak 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 3 answers

    Vikash Gopalak 7 years, 10 months ago

    The right answer is antimatter . The cost is $100 trillion per gram

    1Thank You

    Kumar Baibhav 7 years, 10 months ago

    Platinum

    1Thank You

    Arya Tiwari 7 years, 10 months ago

    Diamond is very expensive.

    0Thank You

    ANSWER

    • Posted by Ayush Chandan 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Vikash Gopalak 7 years, 10 months ago

    Copper is most ductile metal.

    1Thank You

    ANSWER

    • Posted by Ayush Chandan 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Vikash Gopalak 7 years, 10 months ago

    Mercury and zinc

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    • Posted by Nikhil Nikhil 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Yogita Ingle 7 years, 10 months ago

    Effects of Water Pollution:
    ·  Contaminated water becomes unfit for consumption by humans and cattle.

    ·  It results in drastic reduction of fish population. Fall in fish population results in loss of livelihood for fishermen.

    ·  Water pollution results in increased cases of water borne diseases; like cholera, diarrhoea, jaundice, etc.

    ·  Presence of faecal matter results in high concentration of E.coli in water; which causes water borne diseases.

    ·  Contamination of groundwater results in high levels of toxic materials in fruits, vegetables and grains.

    Effects of Air Pollution:

    • Carbon dioxide cause global warming because it is a potent greenhouse gas.
    • Smog: Smog is a mixture of smoke and fog. Smog reduces visibility, and thus can create problems for drivers at highways. Pilots face problems while landing or taking off; due to smog.
    • Carbon monoxide is a poisonous gas even at low concentration. It reduces oxygen carrying capacity of blood, and a person may die on exposure to carbon monoxide.
    • Acid Rain: Oxides of sulphur and nitrogen mix with rainwater to create acid rain. Acid rain can be harmful for living beings and also for non-living things. Acid rain corrodes the outer surface of buildings. This has caused the Taj Mahal becoming pale.
    • Suspended Particulate Matter in air can cause respiratory problems; like asthma and other respiratory disease.
    • Greenhouse Effect: Greenhouse gases; like carbon dioxide and methane trap solar radiation and thus increase atmospheric temperature. This is called greenhouse effect.
    • Global Warming: Overall increase in temperature of earth is called global warming.

    3Thank You

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    • Posted by Vishal Jaiswal 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Ritika Meena 7 years, 10 months ago

    40 degree

    0Thank You

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    • Posted by Nikhil Singh Jadon 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 4 answers

    Isheta Singh 7 years, 10 months ago

    Excuse me........unit of loudness is decibel and unit of frequency is hertz....

    0Thank You

    Rohan Vs 7 years, 10 months ago

    Unit of sound is hertz And unit of loud is decibal(db)

    0Thank You

    Bhumi Shaw 7 years, 10 months ago

    The unit of sound is decibel . In short it can be written as db

    1Thank You

    Nikhil Nikhil 7 years, 10 months ago

    The unit of sound is db

    1Thank You

    ANSWER

    • Posted by Tridip Goswami 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Nikhil Nikhil 7 years, 10 months ago

    Purification is a process in which harmful pollutant are removed from water and making it fresh is called purification

    1Thank You

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    • Posted by Pankaj Srivastava 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Nikhil Nikhil 7 years, 10 months ago

    Gold is much less reactive .over the time reacts with our oxygen rich atmosphere especially if moisture is present . So ,the iron is not a noble metal on other hand gold is a noble metal .

    1Thank You

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    • Posted by Kshitiz Srivastava 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 3 answers

    Bhumi Shaw 7 years, 10 months ago

    Adolescence is growing period of a person . So it is necessary for him or her to maintain balenced diet . The balance diet for adolescents includes cereals , jaggery , butter ghee , cooking oils , milk , pulses , peas , beans , cheese , eggs , lean meat , fish , Amla , chapati , and many more

    1Thank You

    Nikhil Nikhil 7 years, 10 months ago

    Chapati .dal and vegetables

    1Thank You

    Vishal Jaiswal 7 years, 10 months ago

    Chapati,dal and vegetables

    1Thank You

    ANSWER

    • Posted by Nikhil Rawat 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Bhumi Shaw 7 years, 10 months ago

    Which disease

    2Thank You

    ANSWER

    • Posted by Ayushi Prajapati 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Astha Upadhyay 7 years, 10 months ago

    The hertz (symbol: Hz) is the derived unit of frequency in the International System of Units (SI) and is defined as one cycle per second.

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    • Posted by Bharath Bharath 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 2 answers

    Bhumi Shaw 7 years, 10 months ago

    First understand what is greenhouse effect ; GREENHandE EFFECT : greenhouse is a glass enclosure in which the plants I kept to protect them from the cold air outside , the glass traps the hot rays of the Sun and doesn't allow them to escape and thus keeps the inside temperature high and warm for the growth of plants. Our atmosphere acts as an greenhouse class 8 traps the maximum heat of the Sun and then the minimum part is reflected back , this typing of solar radiation bye the atmosphere in the nature is called as greenhouse effect . Only due to this the temperature of the earth remains warm for existence of life . Some of the greenhouse gases are carbon dioxide , nitrogen , water vapour etc . But now days the amount of seo2 gas is increasing day by day because of deforestation . This sudden increase in greenhouse gases leads to the high temperature and warming of Earth . This whole process is called as GLOBAL WARMING. Hope you understood my friend

    0Thank You

    Astha Upadhyay 7 years, 10 months ago

    In the same way, the earth has its own clothes to control its temperature. This function is fulfilled by the atmosphere, invisible to us, that wraps around the earth. Without the earth's atmosphere, the air temperature on the earth's surface would be far below zero. The carbon dioxide we discharge in the process of living our lives also becomes a constituent in the atmosphere. When we release carbon dioxide it is like putting more clothes on the earth, leading to increased temperatures in the air from the ground surface up to an altitude of almost 20 kilometres. Carbon dioxide is causing all the fuss now, but there are many other gases that also cause warming. Other gases discharged through human activities such as methane gas, and chlorofluorocarbons, made famous by the ozone hole, are not thought to have as big an impact on global warming as carbon dioxide, but in the same amounts they cause more temperature rise than carbon dioxide, so concerns about them are rising. << Go back　Go next >> ▲Go to Top Admission hours 9:30 A.M. to 5:00 P.M. ※Last admission time is 4:30 P.M. Museum holidays Mondays Mondays or on the following weekday if a public holiday. Third Friday Third Friday on the forth Friday in case of a public holiday. Year-end and New-Year Holidays December 29th to January 3rd. Temporarily open 7/21, 8/14, 8/18 Temporarily closed 7/14, 9/5, 9/6 Admission fee Adults Museum & Planetarium 800 yen Museum only 400 yen High school & university students Museum & Planetari

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    • Posted by Bharath Bharath 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 2 answers

    Rohan Vs 7 years, 10 months ago

    The raise of temperature

    0Thank You

    Nikhil Nikhil 7 years, 10 months ago

    Global warming Come because of increase in pollution and high temperature.

    1Thank You

    ANSWER

    • Posted by Yashwardhan Nagpal 7 years, 10 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Astha Upadhyay 7 years, 10 months ago

    An asteroid is a large, irregularly shaped object in space that orbits our Sun. If one of these giant rocks ends up on a collision course with Earth, we are in for big trouble. An asteroid is like a comet. ... Around a million asteroids are located between Mars and Jupiter in an area called the “asteroid belt.”

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