Year 8/7th Grade Exam Quiz :) Science

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  • 1/5 Questions

    Heart Disease is caused by lack of Vitamin C?

    • True
    • False
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About This Quiz

This Year 8\/7th Grade Science quiz assesses knowledge on fundamental scientific concepts including respiration, properties of light, and basic elements. It tests understanding through true\/false and matching questions, enhancing students' comprehension of key science topics.

Year 8/7th Grade Exam Quiz :) Science - Quiz

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  • 2. 

    True or False? Light travels in straight lines??

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Light travels in straight lines because it is a form of electromagnetic radiation that propagates through space as waves. These waves move in a straight line until they encounter an obstacle or are refracted or reflected by a medium. This behavior is explained by the principle of rectilinear propagation of light, which states that light travels in straight lines unless it interacts with another object or medium.

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  • 3. 

    What is the word equation for respiration?

    • Water+Carbon Dioxide= Nitrogen+Oxygen

    • Glucose+Oxygen=Carbon Dioxide+Water

    • Glucose+Oxygen=Carbon Dioxide+Nitrogen

    Correct Answer
    A. Glucose+Oxygen=Carbon Dioxide+Water
    Explanation
    The word equation for respiration is glucose + oxygen = carbon dioxide + water. During respiration, glucose is broken down in the presence of oxygen to produce carbon dioxide and water. This process releases energy that is used by cells for various functions.

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  • 4. 

    What is the effect called when light hits a window and changes direction?

    • Reflection

    • Spectrum

    • Refraction

    • Mirror Line

    Correct Answer
    A. Refraction
    Explanation
    Refraction is the correct answer because when light passes through a window, it changes direction due to the change in speed caused by the change in medium. This phenomenon is known as refraction.

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  • Current Version
  • Nov 29, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • May 26, 2012
    Quiz Created by
    Libertymae
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