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    • Posted by Varun Deep 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 1 answers

    .. ... 6 years, 3 months ago

    A geologist is a scientist who studies the solid, liquid, and gaseous matter that constitutes the Earth and other terrestrial planets, as well as the processes that shape them

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    • Posted by Shilpa Sharma 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 1 answers

    .. ... 6 years, 3 months ago

    To treat wasp stings Wasp Sting’s venom is basic in nature, applying vinegar to the sting neutralizes the sting as vinegar is acidic in nature. To treat acidity or gastric patients Acidity or gastric problems arise due to an increase of acid in the stomach, Anti-acids or antacids are medicines containing bases such as NaCHO3 (sodium bicarbonate) Mg(OH)2 (magnesium hydroxide) neutralize excess of acid in the stomach. To treat acidic or basic soils Plants don’t grow well if the soil is too acidic or too basic. To neutralize acidic soils, bases like ash of burnt wood, CaO, CaCO3, etc are added. Similarly, basic soils are neutralized. To treat tooth decay or cavities Most food particles are acidic in nature. For example, lemonade, chocolate, etc. Such foods produce acid in our mouth which reacts with enamel i.e. calcium phosphate and leads to cavities. Using toothpaste while brushing helps to neutralize the acid since toothpaste is a base. To treat bee stings Bee stings contain formic acid and are acidic in nature, these stings can be neutralized by applying a base like baking soda. To prevent coagulation of latex In the rubber industry, ammonia solution, NH4OH, is used to prevent the coagulation of latex because ammonia solution, NH4OH, can neutralize the acid (lactic acid) produced by bacteria in the latex.

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    • Posted by Angel Malik 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 5 answers

    Kena Gandhi 6 years, 3 months ago

    By the process of convection

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    Vikash Kumar 6 years, 3 months ago

    Because heating gases it expensive

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    Arpita Singh 6 years, 3 months ago

    As we know that warmer air is lighter than cold air thus smoke is warm and light it rises up.....

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    .. ... 6 years, 3 months ago

    The density of the hot air trapped inside a balloon is less than that of the surrounding cooler air. When this happens, the balloon will rise. ... Smoke is less dense than Air. This causes the air to exert buoyant force greater than the weight of the smoke and causes it to rise just the way a balloon does.

    1Thank You

    Nihan Chand 6 years, 3 months ago

    Insan ki Kitni ungli hoti hai

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    • Posted by Ashmit Chanana 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 5 answers

    Kena Gandhi 6 years, 3 months ago

    Small intestine

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    Vikash Kumar 6 years, 3 months ago

    Absorption

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    Arpita Singh 6 years, 3 months ago

    Large intestine

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    Muneer Ahamed 6 years, 3 months ago

    Large intestine

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    Sreedharsana R 6 years, 3 months ago

    large intestine

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    • Posted by Sonali Naragund 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 5 answers

    Abhijeet Chaudhary 6 years, 3 months ago

    Blue whale is largest animal in the world

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    Kanish Sharma 6 years, 3 months ago

    Blue wale

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    Manmohan Jaiswar 6 years, 3 months ago

    Blue whale

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    Ashutosh Katyan 6 years, 3 months ago

    Blue Whale

    1Thank You

    Sonali Naragund 6 years, 3 months ago

    Whale

    1Thank You

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    • Posted by Sidhant Kumar Dash 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Manmohan Jaiswar 6 years, 3 months ago

    Near about 240 trillion kilometers in a24 minutes

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    • Posted by Kalyani Barla 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Sruthi Sree 6 years, 3 months ago

    Lightning conductor is fitted in the top of a building .During lightning, the electrical current flows through a long rod (made of metal) from the top and reaches the copper plate which is fitted under the ground which absorbs the current and passed it into the earth. This saving the building and the electrical appliances in it.

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    • Posted by Kalyani Barla 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Meghna Thapar 5 years, 10 months ago

    The lightning conductor is a thick copper wire or a strip that is secured onto the tallest point of a building to a long copper earth pole that is hammered deep into the ground at the side of the building. It protects buildings from lightning strokes by providing an easier path for the current to flow to earth rather through the building. 

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    • Posted by Kalyani Barla 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Meghna Thapar 5 years, 10 months ago

    The lightning conductor is a thick copper wire or a strip that is secured onto the tallest point of a building to a long copper earth pole that is hammered deep into the ground at the side of the building. It protects buildings from lightning strokes by providing an easier path for the current to flow to earth rather through the building. 

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    • Posted by Sandeep Singh 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 1 answers

    .. ... 6 years, 3 months ago

    Acids are very soluble. When they flow into our waters, they form acidic solutions. As we know, acids are very corrosive. Therefore acidic water pose a great danger on the species living in aquatic environment. Consumption of acidic water is also a danger to our health.

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    • Posted by Shraddha Gosavi 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 4 answers

    Kena Gandhi 6 years, 3 months ago

    The cool air trapped in woollen clothes and give us warm

    0Thank You

    Arpita Singh 6 years, 3 months ago

    Wool is have to many yarn it compact the heat and we fell warm

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    .. ... 6 years, 3 months ago

    Wool is fluffy and hence retains air.since air is bad conductor of heat wool is property of retaining heat.therefore wool fibre help in keeping our body warm.

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    Shraddha Gosavi 6 years, 3 months ago

    How does wool fibre help in keepingour body warm ?

    1Thank You

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    • Posted by Jahid Husian 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 2 answers

    Dhanay Gupta 6 years, 3 months ago

    Unicellular organism

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    Kasthuri Nayak 6 years, 3 months ago

    Algea is a unicellular organism

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    • Posted by Sandeep Singh 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 2 answers

    .. ... 6 years, 3 months ago

    No, you should not drink the orange juice in this situation because the orange juice contains the lot of the acid that can make your condition worst. For curing indigestion, the doctor suggests the bases like antacid and others. It reacts with the high acid in the stomach that provides you relief from the acidity

    2Thank You

    Dhyeyscience Center 6 years, 3 months ago

    because in orangejuice base is present

    1Thank You

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    • Posted by Prajal Soni 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 4 answers

    Aradhana Pai 6 years, 3 months ago

    Organisms need food for energy and growth.

    0Thank You

    Vedant Rawat 6 years, 3 months ago

    Organisms need to take food because to stay healthy and do all tasks of the day

    0Thank You

    Akanksha Pawar 6 years, 3 months ago

    Organisms need to take food to live, servive,to take out their life process

    0Thank You

    Kshitij Kumar 6 years, 3 months ago

    Organisms need to take food for nutrients, so that they can fulfill their daily activities.

    4Thank You

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    • Posted by Prajal Soni 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 4 answers

    Pragya Gupta 6 years, 3 months ago

    Leaves have some pores in it called stomata. Ot takes in carbon dioxide on and give out oxygen. Ot also trap the sumlight , for photosynthesis

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    Vedant Rawat 6 years, 3 months ago

    There is a imortant role of leaves in photosynthesis as leaves do the main role of photosynthesise as leaves make food for whole plant

    0Thank You

    Mahesh Kharche 6 years, 3 months ago

    Leaves are important for photosynthesis as they only make food and the other is that they contain chlorophyll that above the sunlight and they also has stomata that help in exchange of gases.

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    Prajal Soni 6 years, 3 months ago

    Leaves contain chlorophyll that trap Solar energy and take in carbon dioxide from the air through the stomata for photosynthesis

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    • Posted by Suhani Rai 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 2 answers

    Akanksha Pawar 6 years, 3 months ago

    Chemical changes means the changes which are irreversible. Ex- Making curd , because whatever the spices , water we put in that, that we can't get again. And Physical changes means the changes which are reversible Ex- Melting of ice. Because if we take water in ice tray & kept in freezer than it will become ice & again we kept it out side it will become water as it was first.

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    Suhani Rai 6 years, 3 months ago

    I don't know

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    • Posted by Kaushal Mishra 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 7 answers

    Sia ? 6 years, 3 months ago

    The normal temperature of human body is 37°C.

    1Thank You

    Arpita Singh 6 years, 3 months ago

    37°C. Or 98.7°F

    0Thank You

    Aradhana Pai 6 years, 3 months ago

    37°C and 98.6°F are the normal temprature in human beings.

    0Thank You

    Kasthuri Nayak 6 years, 3 months ago

    37°c is the temperature of human body

    0Thank You

    Vagisha Vats 6 years, 3 months ago

    37

    0Thank You

    Pratham Pawar 6 years, 3 months ago

    37 degree normal temperature

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    Sagar Vithalkar 6 years, 3 months ago

    The normal temperature of human body is 37 ...it does not go below 35 or above 42.

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    • Posted by Sandeep Singh 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 3 answers

    Vagisha Vats 6 years, 3 months ago

    Baking soda

    1Thank You

    Pragya Gupta 6 years, 3 months ago

    Child have to baking soda as it is basic in nature and wasp string is acidic

    1Thank You

    .. ... 6 years, 3 months ago

    Baking soda is the best remedy because it is basic in nature and as the wasp stings it leaves methanoic acid which causes burns, thus to neutralise the reaction baking soda is best.

    1Thank You

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    • Posted by Sandeep Singh 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 1 answers

    .. ... 6 years, 3 months ago

    Turmeric is a good indicator of acids and bases. It turns red in bases whereas it is yellow in both acids and neutral solutions. When we mix turmeric to the three liquids, sodium hydroxide turns it into red so we conclude that it is a base. Hydrochloric acid and sugar solution keep turmeric in yellow colour. Hydrochloric acid is an acid as already mentioned and sugar solution is neutral.

    1Thank You

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    • Posted by Hitesh Yadav 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 1 answers

    .. ... 6 years, 3 months ago

    TIME period :- ... Time taken to a complete one cycle. Or ... A period of a wave or vibration is the is the time it takes for complete vibration for a complete cycle . □The time period is related to the frequency by T =1/f □It's unit is :- 's

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    • Posted by Yash Garg 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 2 answers

    .. ... 6 years, 3 months ago

    Write the points . It is looking long but it is not .

    1Thank You

    .. ... 6 years, 3 months ago

    It is a process in which the top fertile layer of soil is lost. Due to soil erosion, the soil becomes less fertile. The top layer of soil is very light which is easily carried away by wind and water. The removal of topsoil by the natural forces is known as soil erosion 1. Afforestation Planting new trees and plants is afforestation. We live because plants live. If the plants die, all living things will also die. Thus, whenever trees are cut down new trees should be planted. Planting trees in hilly areas are most effective for conservation. 2. Crop Rotation Between harvesting one crop and planting the next crop, the fields lie bare; there is a time period when the farmland does not have any crops. During this period, the farmer either grows grass or grows other crops to prevent soil from erosion. This helps the soil to regain the lost minerals. 3. Terrace Farming In hilly areas, farming is done by cutting steps on the slopes of the hills. This slows down the flow of water and soil removed from one step is deposited on the next step. Thus, the soil is never completely lost. This is terrace farming. 4. Building Dam Dams are built to prevent floods, which not only damage the crops but also wash away the topsoil. 5. Shelerbelts The cover of plants and trees around the field also breaks the speed of strong winds and protects the soil from being blown away. 6. Embankments Bib strong structure called embankments along the banks of the river can protect fields from the floods. These embankments prevent the fast overflowing rivers and rainwater from washing away a huge amount of rich fertile soil. 7. Van Mahotsav It is an annual tree planting festival started by the Government of India. The aim of this programme is to create awareness about the need for conservation of forest and soil

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    • Posted by Manick Chadha 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 4 answers

    Pragya Gupta 6 years, 3 months ago

    Photosynthesis

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    Pragya Gupta 6 years, 3 months ago

    Photosynthesis , green plants make their food with the help of water , carbon dioxide but in presence of chlorophyll and sunlight and giving out oxygen , sugar in the form of starch.

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    Yogita Ingle 6 years, 3 months ago

    The process of synthesis of food in green plants is called photosynthesis. This process takes place in the cells containing the green pigment chlorophyll. The raw materials for this process are water, carbon dioxide and sunlight. Water and minerals present in the soil are absorbed by the roots and transported to the leaves. Carbon dioxide from air is taken in through the stomata present on the leaf surface. During photosynthesis, chlorophyll containing cells of leaves, in the presence of sunlight, use carbon dioxide and water to synthesise carbohydrates. The process can be represented as an equation:
    Carbondioxide + water  = Carbohydrate + oxygen

    1Thank You

    Omm Night Hunter 6 years, 3 months ago

    Photosynthesis

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    • Posted by Manick Chadha 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Yogita Ingle 6 years, 3 months ago

    Photosynthesis is defined as the process in which the chlorophyll-containing plant cells synthesize food in the form of carbohydrates, using carbon dioxide and water in the presence of solar energy.   

    Sources of raw materials required for photosynthesis:

    (a)  Water is taken in, from the roots of the plant and is transported to the leaves.

    (b)  Carbon dioxide from the air enters the leaves through the pores called stomata and diffuses to the cells containing chlorophyll.

    (c)  Solar energy is used to break water into hydrogen and oxygen. This hydrogen is combined with carbon dioxide to form food for the plants, which is ultimately used by the animals as well.

     

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    • Posted by Balrajsinh Solanki 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Meghna Thapar 5 years, 5 months ago

    The degree Celsius (symbol: °C) can refer to a specific temperature on the Celsius scale or a unit to indicate a difference between two temperatures or an uncertainty. It is named after the Swedish astronomer Anders Celsius (1701–1744), who developed a similar temperature scale. The basic unit of temperature in the International System of Units (SI) is the Kelvin. It has the symbol K. For everyday applications, it is often convenient to use the Celsius scale, in which 0 °C corresponds very closely to the freezing point of water and 100 °C is its boiling point at sea level.

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    • Posted by Sandeep Singh 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 3 answers

    Pragya Gupta 6 years, 3 months ago

    Use of litmus tells us about how much strong is our acid or base is. It can be to acidic that may burn your skin or to basoc that may burn your skin

    1Thank You

    Vagisha Vats 6 years, 3 months ago

    Litmus is a indicator

    1Thank You

    Yogita Ingle 6 years, 3 months ago

    Litmus is the most commonly used natural indicator available as strips of paper or solution. It is extracted from lichens. It turns to red on addition of an acidic solution and turns blue on addition of a basic solution.

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    • Posted by Sandeep Singh 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 2 answers

    Vagisha Vats 6 years, 3 months ago

    A type of salty water

    1Thank You

    Yogita Ingle 6 years, 3 months ago

    Distilled water is neutral by nature. We can verify it by litmus test. Water does not change the colour of either red or blue litmus.

    1Thank You

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    • Posted by Sandeep Singh 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 1 answers

    Pragya Gupta 6 years, 3 months ago

    As turmeric is a indicator and soap is a base , when turmeric comes in contact with base ot change to red colour

    2Thank You

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    • Posted by Ug Sidharth 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 5 answers

    Vedant Rawat 6 years, 3 months ago

    The mode of nutrition in which organisms can not make their own food and depend on other creatures to make their food

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    Priyanka Behera 6 years, 3 months ago

    IN THIS MODE OF NUTRITION ORGANISMS DEPENDS ON ANOTHER ORGANISM & TAKE FOOD FROM THEM IS CALLED HETEROTROPHIC NUTRITION.

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    Waseem Izhan 6 years, 3 months ago

    Relating to an organism that cannot manufacture its own food and instead obtains its food and energy by taking in organic substances, usually plant or animal matter. All animals, protozoans, fungi, and most bacteria are

    0Thank You

    Sia ? 6 years, 3 months ago

    Heterotrophic nutrition is the mode of nutrition in which organisms depend upon other organisms for food to survive. 

    0Thank You

    Yogita Ingle 6 years, 3 months ago

    The word Heterotrophic is the combination of two words i.e. Hetero + Trophos. Hetero means ‘others’ and ‘trophos’ means nourishment. If organisms depend on others for their food, such a mode of nutrition is called Hetetrophic Nutrition.

    Animals cannot make their food themselves. They depend for food upon plants. Therefore, nutrition in animals is called Hetetrophic Nutrition. Animals are known as Heterotrophs.

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    • Posted by Jivan Chandrakar 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 4 answers

    Sia ? 6 years, 3 months ago

    Food is a substance which includes raw materials which are required by all organisms for body building and generating energy for proper body functioning.

    1Thank You

    Sandeep Singh 6 years, 3 months ago

    Food is a substance which we eat.

    0Thank You

    Vedant Rawat 6 years, 3 months ago

    Food is a substance which we eat

    0Thank You

    Aditya Chhetri 6 years, 3 months ago

    Very tasty and delicious also sometimes very bad in taste

    1Thank You

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    • Posted by Tirth Shah 6 years, 3 months ago

    CBSE > Class 07 > Science
    • 2 answers

    .. ... 6 years, 3 months ago

    The wind will blow from the higher pressure over the water to lower pressure over the land causing the sea breeze. The sea breeze strength will vary depending on the temperature difference between the land and the ocean. At night, the roles reverse. The air over the ocean is now warmer than the air over the land. land breeze definition. The breeze that blows from the land toward the sea after sunset. The land cools more quickly than the ocean, cooling the air above it. The warmer air above the water continues to rise, and cooler air from over the land replaces it

    1Thank You

    Maithili Poradwar 6 years, 3 months ago

    moving of hot air from sea to land during day time is called as sea breeze

    1Thank You

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