Sharelle wants to learn more about optics. Which of the following inquiries fall under the field of optics? Determining how quickly different objects fall due to gravity O Examining how much light different types of mirrors reflect Researching how lenses made from different materials bend light Measuring how strong a magnet is at different temperatures Measuring how much energy is released due to a nuclear reactionA scientist looks up the masses of three objects. Their masses are 4.11 * 10kg, 3.1 * 10"kg, and 2.000 * 10-kg. Which of the following values shows the sum of these masses, with the correct number of significant figures? O 9.210 * 10-2 kg 9.21 * 10-2 kg 9.2 * 10-2 kg 9 * 10-2 kgWhich of the following statements best describes accuracy? O a description of the limitations of the measuring instrument how close all meaurements are to one another O the exactness of a measurement O the correctness of a measurementHow many significant figures does the number 3.31 * 10 * have? 6 1 3 O 1 2Which of the following measurements of a certain object's mass is the most precise? 4.1 * 105 kg 4.166 * 10" kg 415000 kg 400000 kgA student notices that when she plays her music loudly, the table she is sitting at vibrates. What chapter in her physics textbook would most likely provide additional information about her observation? Relativity Electromagnetism O Optics O Thermodynamics O WavesA laboratory scientist is performing a chemical reaction. She has calculated that the reaction should produce 11.20 grams of a certain product. When she completes the reaction, she measures that she has produced 10.95 grams on the product. What is her percent error? 0.022% 0.25% 25% 2.2%Convert 2157 km to m. O 2.157 m O 215700 m O 215.7 m C 2157000 mWhich of the following SI units form the basis of measurements used in physics? liter gram meter kilogram second. If a scientist dropped a hammer and a feather at the same time on the Moon. what would most likelyr happen? 3 The hammer would hit the ground first. 3 Both would oat. 3 The hammer and feather would hit the ground at the same time. D The feather would hit the ground first. .A physicist is performing an experiment on how quickly heat moves between two blocks of metal. Under which branch of physics would this experiment best be categorized? 3 Thermodynamics 3 Quantum mechanics 3 Mechanics D Electromagnetism Which of the following statements accurately describe a scientific theory? it explains a certain aspect of the world it is an educated guess about a certain observation it is supported by a large body of evidence it can be adjusted in light of new evidence it has not been tested yet using the scientific methodA scientist takes five temperature measurements before performing an experiment: 24.10C, 24.13C, 24.08C, 24.11"C, and 24.16C. The actual temperature of the object was 21.64C. Which of the following statements describes the scientist's measurements? both precise and accurate accurate, but not precise neither precise nor accurate precise, but not accurateWhich of the following attributes are part of a well-constructed hypothesis? is testable, and can be shown to be incorrect is written in the form of a question is specific about what it is testing contains the scientists opinion about the experiment mentions both an independent and dependent variableWhich of the following statements best describes physics? The study of life The study of technology The study of how matter reacts The study of the physical worldA physicist has used an equation to calculate that a certain object will be launched 77.1 m. Which term best describes this value? Percent error Hypothesis Experimental value Theoretical valueMax is taking all of the data from an experiment, and putting it into a graph. Which step of the scientific method is he most likely performing? Background research Formulating a hypothesis Analyzing results Performing the experimentWhich of the following are benefits of the SI, or metric system? It is more widely used internationally. It is more widely used in the United States. It is base-10, making conversions simple. It is more precise and accurate than the imperial system. It is the standard system in all fields of science.Write the number 0.000275 in scientific notation. 2.75 * 10-6 2.75 * 10-4 2.75 * 10-3 2.75 * 10*Before forming a hypothesis, a scientists will first perform background research about the observation they have made. Why is it important to do background research before forming a hypothesis?Which of the following are examples of technology, but not science? Comparing how temperature affects the strength of materials Performing an experiment on how potassium affects plants Building a telescope that can see more clearly Writing a program that analyzes data fasterExplain how improvements in technology can help lead to improvements in the field of science as well.The results of a scientific experiment are usually only considered valid if they are performed under controlled, laboratory conditions. Explain why these conditions are necessary for the validity of an experiment.Scientists will often build upon the findings of previous scientists. Describe how one scientific discovery could not have been made without a previous scientific discovery.. People often confuse hypotheses with theories. Explain hw to determine if a statement is a hypothesis or a theory. Which of the following statements is an example of a testable hypothesis? Higher levels of carbon dioxide dissolved in water will make the water taste bad. There is too much carbon dioxide dissolved in natural bodies of water. Dissolving carbon dioxide in water will lower the temperature at which the water freezes. There is more carbon dioxide on Earth than anywhere else.Which of the following statements accurately describe the relationship between science and technology? Improvements in technology can allow for better scientific observations. Science and technology both use the scientific method answer questions. Technology and science are the same thing, and achieve the same goals. The knowledge gained from science helps humans develop technology. Technology allows scientists to avoid using the scientific method.. Which of the following statements best describes a contribution Aristotle made to science? 3 He applied formal logic to the stud}.r of science. 3 He determined the the Earth revolved around the Sun. 3 He developed the SI or metric system. 3 He discovered the law of universal gravitation. Write the number 889, 000, 000 in scientific notation. 88.9 * 108 8.89 * 1010 8.89 * 10-8 8.89 * 10After a scientist performs an experiment, which of the following steps should they take? Analyze the results of the experiment State the problem that they have observed Form a hypothesis based on what they saw Perform background research, to provide context