Science and the Natural World Say Thanks to the Authors Click http://www.ck12.org/saythanks (No sign in required) To access a customizable version of this book, as well as other interactive content, visit www.ck12.org CK-12 Foundation is a non-profit organization with a mission to reduce the cost of textbook materials for the K-12 market both in the U.S. and worldwide. Using an open-content, web-based collaborative model termed the FlexBook®, CK-12 intends to pioneer the generation and distribution of high-quality educational content that will serve both as core text as well as provide an adaptive environment for learning, powered through the FlexBook Platform®. Copyright © 2014 CK-12 Foundation, www.ck12.org The names “CK-12” and “CK12” and associated logos and the terms “FlexBook®” and “FlexBook Platform®” (collectively “CK-12 Marks”) are trademarks and service marks of CK-12 Foundation and are protected by federal, state, and international laws. Any form of reproduction of this book in any format or medium, in whole or in sections must include the referral attribution link http://www.ck12.org/saythanks (placed in a visible location) in addition to the following terms. Except as otherwise noted, all CK-12 Content (including CK-12 Curriculum Material) is made available to Users in accordance with the Creative Commons Attribution-Non-Commercial 3.0 Unported (CC BY-NC 3.0) License (http://creativecommons.org/ licenses/by-nc/3.0/), as amended and updated by Creative Commons from time to time (the “CC License”), which is incorporated herein by this reference. Complete terms can be found at http://www.ck12.org/terms. Printed: June 10, 2014 www.ck12.org C HAPTER Chapter 1. Science and the Natural World 1 Science and the Natural World Lesson Quiz Name___________________ Class______________ Date________ Multiple Choice Circle the letter of the correct choice. 1. Which area of Earth science includes the study of ancient organisms? a. b. c. d. astronomy meteorology geology paleontology 2. Testing a(n) ____________ involves performing a(n) ____________. a. b. c. d. experiment, observation hypothesis, experiment observation, hypothesis conclusion, prediction 3. Scientists must understand that a. b. c. d. science cannot provide answers to all questions. scientific ideas are fact, and can never be revised. sound scientific ideas are frequently altered. nature is a constantly changing wonder, difficult to understand. 4. Natural studies can be more difficult than laboratory studies because scientists a. b. c. d. cannot control which factor is the dependent variable. cannot control factors that might affect the variables they are investigating. cannot determine which data to analyze. cannot determine the best time of day to collect their data. 5. Which is the correct order in a scientific investigation? a. b. c. d. ask a question, test the hypothesis, communicate results, draw conclusions make observations, ask a question, form a hypothesis, test the hypothesis draw conclusions, ask a question, form a hypothesis, test the hypothesis ask a question, make observations, test the hypothesis, draw conclusions 6. A scientific theory is a. b. c. d. an educated guess. a guess about how or why something happens. a statement that describes what always happens under certain conditions in nature. an explanation for events that are generally accepted as true. 7. Life on Earth was created through a method other than evolution. This statement a. is an example of a hypothesis. 1 www.ck12.org b. can be proved using the scientific method. c. is outside the realm of science. d. is a scientific observation. 8. An example of a dependent variable is a. b. c. d. the amount of light plants are exposed to each day during an experimental study. the amount plants grow under specific conditions during an experimental study. the amount of fertilizer given to plants during an experimental study. the amount of water given to plants each day during an experimental study. 9. Examples of scientific models include a. b. c. d. a diagram of a food chain. a map of the solar system. a model of an atom showing the location of the nucleus and the electrons. all of the above. 10. Science a. b. c. d. is a way of gaining knowledge about the natural world. is done by following the scientific method. is done through scientific investigations. all of the above 11. Science cannot answer all questions. a. b. c. d. The above statement is true because science cannot answer matters of belief. The above statement is true because all science is based on logic. The above statement is false because science can prove that life evolves over time. The above statement is false because science is based on observations and evidence. 12. A main difference between a scientific theory and a hypothesis is that a. b. c. d. the theory has been repeatedly tested and proven. the theory must be based on scientific knowledge. the theory is a possible answer to a scientific question. all of the above True or False Write true if the statement is true or false if the statement is false. _______ 13. A scientific theory is always supported by a great deal of evidence. _______ 14. The scientific method always begins by asking a question. _______ 15. Science can be used to answer all questions. _______ 16. Under certain conditions, a scientific law is always true. _______ 17. A good hypothesis is always correct. Fill in the Blanks Fill in the blank with the term that best completes the sentence. 18. A(n) ____________ tells what will happen under certain conditions. 19. A(n) ____________ is a special type of scientific investigation. 20. The affected variable in an experiment is the ____________ variable. 21. A(n) ____________, a possible answer to a scientific question, must be based on scientific knowledge. 22. The final step in the scientific method is ____________. 2 www.ck12.org Chapter 1. Science and the Natural World 23. Science is a distinctive way of gaining knowledge about the ____________. 24. Evidence that ____________ with your prediction supports your hypothesis. 25. The theory of evolution and the cell theory are well known scientific ____________. Short Answer Answer each question in the space provided. 26. What is a hypothesis? Give an example and describe how a scientist would try to prove the hypothesis. 27. What is a scientific theory? Describe the importance of a scientific theory. Give an example. 3
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