Scientific Measurements and the Metric System
52 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is one reason that makes the Imperial System less efficient compared to the Metric System?

  • It is based on universal scientific constants.
  • It simplifies conversions between different measurements.
  • It uses consistent units across different contexts.
  • It relies on random objects and units, making it harder to learn. (correct)

    • How many places does the decimal point move between each metric prefix when converting?

  • Four places
  • Three places
  • One place (correct)
  • Two places

    • What does it mean to be accurate in a science laboratory?

  • Using the correct lab equipment only.
  • Obtaining results that are close to the true value. (correct)
  • Producing results that are repeatable.
  • Following lab procedures precisely.

    • What defines accuracy in scientific measurements?

    <p>The closeness of a measurement to the true value.</p> Signup and view all the answers

    Which of the following best describes precision in scientific measurements?

    <p>The degree of finesse based on the tool used.</p> Signup and view all the answers

    Which metric prefix represents the smallest value in the King Henry Slider method?

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

    What is the primary purpose of the initial step in the scientific method?

    <p>To identify a question or problem.</p> Signup and view all the answers

    What is the primary difference between truth and scientific knowledge?

    <p>Truth cannot change over time, while scientific knowledge evolves.</p> Signup and view all the answers

    Which of the following conversions is accurate based on metric conversion principles?

    <p>4 cm = 40 mm</p> Signup and view all the answers

    In the scientific method, which step directly follows formulating a hypothesis?

    <p>Experiment/Procedure</p> Signup and view all the answers

    When measurements are precise but not accurate, it indicates what situation?

    <p>Measurements are clustered together but far from the true value.</p> Signup and view all the answers

    Using a ruler carefully to mark measurements is an example of which concept?

    <p>Accuracy in measurements.</p> Signup and view all the answers

    Which step involves summarizing data in a clear format without interpretation?

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

    What is a characteristic of a hypothesis in the scientific method?

    <p>It should be a testable prediction.</p> Signup and view all the answers

    Which of the following steps involves evaluating whether the initial hypothesis was supported or refuted?

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

    What is the role of the independent variable in an experiment?

    <p>It is the treatment or change administered to a group.</p> Signup and view all the answers

    Why is it important to only test one independent variable at a time in an experiment?

    <p>It allows for a clearer understanding of the results.</p> Signup and view all the answers

    What does the dependent variable represent in an experiment?

    <p>What is observed and measured to assess the results.</p> Signup and view all the answers

    What purpose does the control group serve in an experimental design?

    <p>It provides a baseline for comparison against the experimental group.</p> Signup and view all the answers

    Why is it important to only test one independent variable in an experiment?

    <p>To prevent confusion regarding which change caused the result.</p> Signup and view all the answers

    Which of the following best describes a lurking variable?

    <p>A hidden variable that can affect the results without the researchers' awareness.</p> Signup and view all the answers

    What is typically measured in an experiment to test the effects of the independent variable?

    <p>The dependent variable.</p> Signup and view all the answers

    What is the function of a control group in experimental design?

    <p>To provide a baseline for comparison against experimental groups.</p> Signup and view all the answers

    What are lurking variables in the context of an experiment?

    <p>Variables that can unintentionally influence the outcome without being measured.</p> Signup and view all the answers

    What is the primary focus of epistemology?

    <p>The study of the methods of acquiring knowledge</p> Signup and view all the answers

    Which of the following best defines a scientific hypothesis?

    <p>A prediction based on theoretical background</p> Signup and view all the answers

    How does scientific knowledge differ from truth?

    <p>Scientific knowledge is subject to change, while truth is absolute.</p> Signup and view all the answers

    What characterizes a scientific fact?

    <p>It results from consistent experimentation and observation.</p> Signup and view all the answers

    Which statement accurately reflects the nature of a theory?

    <p>It provides explanations and allows for the formulation of new hypotheses.</p> Signup and view all the answers

    What is an atom primarily composed of?

    <p>Protons, electrons, and neutrons</p> Signup and view all the answers

    In the structure of an atom, where are neutrons located?

    <p>In the nucleus</p> Signup and view all the answers

    What does the term 'electron cloud' refer to?

    <p>The region surrounding the nucleus where electrons are likely to be found</p> Signup and view all the answers

    Which of the following is NOT a subatomic particle of an atom?

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

    How are protons and neutrons represented in a basic atom diagram?

    <p>As equal-sized circles in the nucleus without distinction</p> Signup and view all the answers

    What is the purpose of the 'Research (Background Information)' step in the scientific method?

    <p>To gather information and data related to the problem.</p> Signup and view all the answers

    Which statement best describes a hypothesis in the context of the scientific method?

    <p>It represents a testable prediction based on existing knowledge.</p> Signup and view all the answers

    What role does the 'Experiment (Procedure)' step play in the scientific method?

    <p>To clearly outline the steps for conducting the experiment.</p> Signup and view all the answers

    In what way does the 'Conclusion (Analyze results and respond to Hypothesis)' step connect to the hypothesis?

    <p>It expresses how the results relate back to the initial question.</p> Signup and view all the answers

    How do facts, theories, hypotheses, and experiments interact in the cycle of scientific enterprise?

    <p>Experiments can produce new facts, which may alter or expand existing theories.</p> Signup and view all the answers

    What distinguishes isotopes from one another?

    <p>Different number of neutrons</p> Signup and view all the answers

    How is atomic mass calculated?

    <p>It's an average value due to the presence of different isotopes.</p> Signup and view all the answers

    What was Democritus's main contribution to atomic theory?

    <p>Theorized that matter is composed of invisible particles.</p> Signup and view all the answers

    What belief did Aristotle hold regarding the existence of atoms?

    <p>Matter was made of four elements, not atoms.</p> Signup and view all the answers

    Which analogy best represents Democritus's atomic model?

    <p>Invisible spheres.</p> Signup and view all the answers

    What was the primary contribution of Dalton to atomic theory?

    <p>Proposed that atoms are indivisible</p> Signup and view all the answers

    Which model describes electrons as being embedded in a positively charged sphere?

    <p>Plum pudding model</p> Signup and view all the answers

    What discovery did Chadwick make that significantly impacted atomic theory?

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

    What aspect of atomic theory did Schrödinger and Heisenberg challenge?

    <p>Electrons orbit in predictable paths</p> Signup and view all the answers

    Which experiment demonstrated the existence of a dense, positively charged nucleus in the atom?

    <p>Gold foil experiment</p> Signup and view all the answers

    What do Venn diagrams illustrate in the context of atomic theory?

    <p>Overlapping characteristics of different models</p> Signup and view all the answers

    Which statement accurately reflects Bohr's contribution to atomic theory?

    <p>Electrons orbit the nucleus in specific energy levels</p> Signup and view all the answers

    What was a significant improvement in atomic models over time?

    <p>Inclusion of neutrons in atom structure</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser