Biology and Chemistry Quiz: Variation & Conservation
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Questions and Answers

Which of the following traits represents continuous variation?

  • Eye color
  • Blood type
  • Height (correct)
  • Fingerprints
  • What are the two main factors that contribute to variation?

  • Genetic and environmental factors (correct)
  • Environmental and dietary factors
  • Environmental and geological factors
  • Genetic and behavioral factors
  • Mutations are always harmful to an organism.

    False

    What is the principle known as conservation of mass?

    <p>Conservation of mass states that the total mass of the reactants in a chemical reaction is equal to the total mass of the products.</p> Signup and view all the answers

    What is a chemical equation?

    <p>A chemical equation is a symbolic representation of a chemical reaction, showing the reactants and products involved, as well as their stoichiometric coefficients.</p> Signup and view all the answers

    What is the name for the substances that undergo change in a chemical reaction?

    <p>Reactants</p> Signup and view all the answers

    What is the primary function of balancing chemical equations?

    <p>Ensuring the same number of each type of atom on both sides of the equation</p> Signup and view all the answers

    What is the approximate speed of light in a vacuum?

    <p>300,000 km/s</p> Signup and view all the answers

    When light passes through a medium, such as glass, it is said to be:

    <p>Transmitted</p> Signup and view all the answers

    What causes refraction of light?

    <p>Refraction occurs when light changes mediums, causing it to bend due to the change in speed of light.</p> Signup and view all the answers

    Which type of reflection occurs when light reflects off a smooth surface, maintaining the image?

    <p>Specular reflection</p> Signup and view all the answers

    Which type of reflection occurs when light scatters off a rough surface, losing clarity?

    <p>Diffuse reflection</p> Signup and view all the answers

    The angle of incidence is always equal to the angle of reflection.

    <p>True</p> Signup and view all the answers

    Study Notes

    Variation

    • Continuous Variation: Traits change gradually (e.g., height, weight).
    • Discontinuous Variation: Traits are distinct (e.g., blood type, eye color).
    • Genetic Factors: Variation comes from mutations and inheritance.
    • Environmental Factors: Climate and lifestyle affect organism development.
    • Mutations: Changes in DNA that create new traits.

    Conservation of Mass

    • Conservation of Mass Principle: Mass remains constant in chemical reactions.
    • Chemical Equation: Shows reactants and products in a reaction.
    • Reactants: Substances that change in a chemical reaction.
    • Products: Substances formed from the reaction.
    • Balancing Equations: Ensuring equal numbers of each atom on both sides of an equation.

    Light Properties

    • Speed of Light: Fastest in a vacuum (~300,000 km/s).
    • Transmission: Light passing through a medium (e.g., glass).
    • Refraction: Light bends when changing mediums.
    • Specular Reflection: Light reflects off smooth surfaces, keeping image clear.
    • Diffuse Reflection: Light scatters off rough surfaces, losing clarity.
    • Angle of Incidence: Angle at which light hits a surface.
    • Angle of Reflection: Angle at which light bounces off a surface.
    • Colors of Light: White light contains all visible colors.
    • Prism Effect: White light separates into ROYGBIV colors.
    • Wavelength: Distance between successive peaks of a wave.
    • Longest Wavelength: Red light.
    • Shortest Wavelength: Violet light.

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    Description

    Test your knowledge on continuous and discontinuous variation in traits, as well as the conservation of mass in chemical reactions. This quiz will cover genetic and environmental factors affecting traits, along with principles of chemical equations. Dive into the properties of light to enhance your understanding of these scientific concepts.

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