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Home/Questions/Page 25

Qukut Latest Questions

Aditya Gupta
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Aditya GuptaScholar
Asked: 7 months agoIn: Environment

Why is the sky blue?

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Why is the sky blue?

Why is the sky blue?

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  1. AVG
    AVG Explorer
    Added an answer about 7 months ago

    The sky appears blue due to a phenomenon known as Rayleigh scattering. This occurs when sunlight passes through Earth's atmosphere, which contains gases and tiny particles. Sunlight, or white light, is made up of different colors, each with a different wavelength. Blue light has a shorter wavelengthRead more

    The sky appears blue due to a phenomenon known as Rayleigh scattering. This occurs when sunlight passes through Earth’s atmosphere, which contains gases and tiny particles. Sunlight, or white light, is made up of different colors, each with a different wavelength. Blue light has a shorter wavelength and is scattered more easily than colors with longer wavelengths, like red or yellow.

    As sunlight interacts with the molecules in the atmosphere, the shorter wavelengths of blue light are scattered in all directions, making the sky look blue to our eyes. This scattering effect is stronger for blue light because of its shorter wavelength compared to other colors in the visible spectrum.

    At sunrise and sunset, when the sun is lower in the sky, its light passes through more of Earth’s atmosphere, scattering even more of the shorter wavelengths and allowing the longer wavelengths, like red and orange, to dominate the sky’s color.

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Aditya Gupta
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Aditya GuptaScholar
Asked: 7 months agoIn: Physics

What is gravity?

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What is gravity?

What is gravity?

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Answer
  1. AVG
    AVG Explorer
    Added an answer about 7 months ago

    Gravity is a fundamental force of nature that pulls objects with mass toward one another. It’s what keeps planets orbiting the Sun, makes things fall to the ground, and holds galaxies together. Key Features of Gravity Universal Attraction: Any two objects with mass exert a gravitational pull on eachRead more

    Gravity is a fundamental force of nature that pulls objects with mass toward one another. It’s what keeps planets orbiting the Sun, makes things fall to the ground, and holds galaxies together.

    Key Features of Gravity

    1. Universal Attraction:
      • Any two objects with mass exert a gravitational pull on each other.
      • The strength of this force depends on their masses and the distance between them (described by Newton’s Law of Gravitation).
    2. Einstein’s Perspective:
      • In Einstein’s theory of General Relativity, gravity is not just a force but the curvature of spacetime caused by massive objects.
      • Large masses like stars and planets bend spacetime, creating the effect we perceive as gravity.
    3. Everyday Effects:
      • It keeps you grounded on Earth.
      • It gives objects weight, which is the gravitational force Earth exerts on them.
      • It governs the motion of celestial bodies, from moons to galaxies.

    Without gravity, there would be no planets, no orbits, and no life as we know it!

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Aditya Gupta
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Aditya GuptaScholar
Asked: 7 months agoIn: Environment

How do plants make food?

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How do plants make food?

How do plants make food?

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Answer
  1. AVG
    AVG Explorer
    Added an answer about 7 months ago

    Plants make food through a process called photosynthesis, which allows them to convert light energy, usually from the sun, into chemical energy stored in the form of glucose (a type of sugar). This process occurs primarily in the chloroplasts of plant cells, which contain a pigment called chlorophylRead more

    Plants make food through a process called photosynthesis, which allows them to convert light energy, usually from the sun, into chemical energy stored in the form of glucose (a type of sugar). This process occurs primarily in the chloroplasts of plant cells, which contain a pigment called chlorophyll that captures light energy.

    Key Steps in Photosynthesis:

    1. Absorption of Light:
      • Plants use chlorophyll (mainly in the leaves) to absorb sunlight. Chlorophyll is most effective at absorbing blue and red light and reflects green light, which is why plants appear green.
    2. Water and Carbon Dioxide:
      • Plants take in water (H₂O) through their roots from the soil and carbon dioxide (CO₂) from the air through tiny openings in the leaves called stomata.
    3. Conversion of Light Energy into Chemical Energy:
      • In the chloroplasts, sunlight is used to convert water and carbon dioxide into glucose (C₆H₁₂O₆) and oxygen (O₂).
      • This process occurs in two main stages:
        1. Light-dependent reactions: These occur in the thylakoid membranes of the chloroplasts. Sunlight splits water molecules into oxygen, protons, and electrons. The energy from these reactions is stored in molecules called ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate).
        2. Light-independent reactions (Calvin Cycle): Using ATP and NADPH produced in the light-dependent reactions, the plant converts carbon dioxide into glucose in a series of chemical reactions that occur in the stroma of the chloroplast.
    4. Glucose and Oxygen:
      • The glucose produced is used by the plant as a source of energy for growth, reproduction, and maintenance. It can also be stored in the form of starch for later use. Oxygen is released as a byproduct of photosynthesis and is expelled into the atmosphere through the stomata.

    The Photosynthesis Equation:

    The overall chemical equation for photosynthesis is:

    6CO2+6H2O+light energy→C6H12O6+6O2​

    This means:

    • Carbon dioxide + Water + Light energy produces Glucose (food for the plant) and Oxygen (a byproduct).

    Importance of Photosynthesis:

    • Energy Production: Photosynthesis is the primary way plants produce food (glucose) for themselves and other organisms, forming the base of the food chain.
    • Oxygen Generation: It is also responsible for producing the oxygen in Earth’s atmosphere, which is essential for the survival of most living organisms, including humans.

    Plants make food through photosynthesis, a process in which they use sunlight, water, and carbon dioxide to create glucose for energy and release oxygen as a byproduct. This process is vital for plant survival and for sustaining life on Earth.

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Aditya Gupta
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Aditya GuptaScholar
Asked: 7 months agoIn: Science

What is the speed of light?

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What is the speed of light?

What is the speed of light?

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Answer
  1. CMG
    CMG Beginner
    Added an answer about 6 months ago

    speed of light c=3×10^8 meter/second in vacuum

    speed of light c=3×10^8 meter/second in vacuum

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Jawahar
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JawaharExplorer
Asked: 7 months agoIn: Science

What are the types of simple machines?

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What are the types of simple machines?

What are the types of simple machines?

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Answer
  1. Aditya Gupta
    Aditya Gupta Scholar
    Added an answer about 7 months ago

      Six

     

    Six

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Jawahar
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JawaharExplorer
Asked: 7 months agoIn: Biotechnology

How does the digestive system break down food?

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How does the digestive system break down food?

How does the digestive system break down food?

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Answer
  1. Aditya Gupta
    Aditya Gupta Scholar
    Added an answer about 7 months ago

    enzymes

    enzymes

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Jawahar
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JawaharExplorer
Asked: 7 months agoIn: Geography

What is the greenhouse effect and how does it affect global warming?

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What is the greenhouse effect and how does it affect global warming?

What is the greenhouse effect and how does it affect global warming?

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Answer
  1. Aditya Gupta
    Aditya Gupta Scholar
    Added an answer about 7 months ago

    The greenhouse effect is the trapping of heat by greenhouse gases, leading to global warming.

    The greenhouse effect is the trapping of heat by greenhouse gases, leading to global warming.

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Jawahar
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JawaharExplorer
Asked: 7 months agoIn: Biotechnology

How does the process of protein synthesis work?

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How does the process of protein synthesis work?

How does the process of protein synthesis work?

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Answer
  1. Aditya Gupta
    Aditya Gupta Scholar
    Added an answer about 7 months ago

    Protein synthesis involves two main steps: 1. Transcription: DNA is converted into mRNA in the nucleus. 2. Translation: mRNA is read by ribosomes to assemble amino acids into a protein.

    Protein synthesis involves two main steps:

    1. Transcription: DNA is converted into mRNA in the nucleus.

    2. Translation: mRNA is read by ribosomes to assemble amino acids into a protein.

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Jawahar
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JawaharExplorer
Asked: 7 months agoIn: Geography

What is the importance of the ozone layer for life on Earth?

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What is the importance of the ozone layer for life on Earth?

What is the importance of the ozone layer for life on Earth?

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  1. Aditya Gupta
    Aditya Gupta Scholar
    Added an answer about 7 months ago

    The ozone layer protects life on Earth by blocking harmful UV radiation from the Sun.

    The ozone layer protects life on Earth by blocking harmful UV radiation from the Sun.

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Jawahar
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JawaharExplorer
Asked: 7 months agoIn: Biotechnology

What is the role of the skeletal system in movement?

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What is the role of the skeletal system in movement?

What is the role of the skeletal system in movement?

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  1. Aditya Gupta
    Aditya Gupta Scholar
    Added an answer about 7 months ago

    The skeletal system provides support and works with muscles to enable movement.

    The skeletal system provides support and works with muscles to enable movement.

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