Widener BME303 Biomedical Engineering Electrocardiography Lab Report . must be consistent with the fact that the ocean is of great age. A teacher walks into the Classroom and says If only Yesterday was Tomorrow Today would have been a Saturday Which Day did the Teacher make this Statement? The steps of the scientific method provide an organized way to design and conduct experiments and analyze and interpret the results. Which of the following might be best approached through the scientific method? Which of the following variables would be the easiest to control? The size of the lake [T/F] Astronomers gain information about celestial objects by studying many forms of radiation, including x-rays and infrared, not just visible light. C. solid, A scientist wants to know how the distance from a nearby lake affects the amount of nitrogen found in the soil. Logical positivism famously dismissed metaphysics as meaningless. t. e. In physics, the special theory of relativity, or special relativity for short, is a scientific theory regarding the relationship between space and time. In one or two sentences, create and justify a claim about which batter will likely hit the ball the greater distance. Batter B hits the ball with the bat directly behind it. Scientific results must be verified by a great many scientists. Chapter 1 1. Dalton explained the law of conservation of mass by stating that atoms are neither created nor destroyed in a chemical reaction. Methapyrilene, once an active ingredient in certain over-the-counter sleeping pills, was found to be a potent carcinogen (a substance that causes cancer). Show your work. Show where cool supergiants, white dwarfs, the Sun, and mainsequence stars are found. Question 1 Scientific results must be verified by o consulting noted scientific authorities o constructing plausible theories o further experiment o government agencies Moving to the next question prevents changes to this; Question: Remaining Time: 1 hour, 29 minutes, 32 seconds. Using this method, which of the following disciplines is the most complex? B) Atoms change into other atoms in chemical reactions. Therefore, potassium bromide: A) must be a mixture. $$ Two concepts are fundamental in discussing scientific method: truth and justification (warrant). There are many factors which influence one person's attraction to another, with physical aspects being one of them. How many electrons are there in a potassium atom? [Note: 1 ly is about 10km. Which of the following variables would be the easiest to control? Substance B contains 85 % carbon and. When electricity is passed through molten potassium bromide, two simpler substances, potassium and bromine, are produced. Explanation; The reliability and validity of an experiment is that any results of a scientific experiment should be more than one-off finding and be inherently repeatable. What is -40 degrees Celsius to Fahrenheit? B) must have the formula PB. Want to read the entire page? Many scientists must agree that the results of a scientific study are accurate or explainable. , s were correct. A hypothesis is true if it corresponds to the way the world is. age of the universe currently) were compressed to 1 year, then on the same scale the Earth (whose age is about 4.6 Billion years) formed about ______ months after the Universe was born. Justification has to do with the grounds we have for believing a given statement to be true. By the beginning of the 20th century, Newton's law of universal gravitation had been accepted for more than two . are accurate or explainable. Why must a scientist begin. The distance from the lake Marcus Munafo is one of them . Typically, initial observations are based on a previous experiment or observation made by others. [FITB]* If 14 billion years (approx. How do astronomers commonly determine distances to distant galaxies. D) government agencies. The pills were also found to be about as effective as placeboes in promoting sleep. D) has less mass than the resulting potassium and bromine do. A scientific hypothesis is (3) explanatory, predictive and testable . The lines in an atomic line emission spectrum are due to: The maximum number of electrons that may reside in the n=2 energy level is: Which is an IMPOSSIBLE electron configuration? Some modern species may possess biological immortality.. This influential critique was . The DQ for saccharin is: A chemist employed by an airplane manufacturer investigates new adhesives for the purpose of building airplanes without rivets. Why? Which of the following is NOT true for a scientific law? A hypothesis that cannot be falsified is a hypothesis that is automatically consistent with any imaginable phenomenon. [FITB] A light year is a unit of ________. . [T/F] When added to a unit of measure, the prefixes "kilo", "mega", "giga" and "nano" mean one thousand, one million, one billion, and one trillion (respectively), [T/F]* If the Sun (radius R=700,000 km) is scaled down to a basketball, (R=25 cm) , then Earth (R= 7000 km) is roughly like a golf ball (R=2.5 cm). For example , if we see a galaxy 1 million light-years away, we are seeing what the galaxy looked like 1 million years ago. Label the axes. further experimentation . [MC] Suppose the distance from the Sun to Pluto, 40au = 6x10km, were compressed to the size of a pen (15cm). The sugar in the rocket fuel demo I did in class serves as a: A) Separated water into its elements with electricity. The results of Scientific research: a. must be obtained under controlled lab settings b. must conform to public expectations about the outcome c. should not be used to support existing theories d. should be made available for critique and replication 2. Immortality is the concept of eternal life. the scientific process is when you conduct and experiment re check your results over and over again then have those results posted in a scientific journal for others to check before having. [FITB] The distance travelled by light or by an object moving with a constant speed is equal to speed multiplied by ________. What city is located at 17 degrees N and 88 degrees W? A and B are the same substance. C) cannot be an element. Scientific Law . 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Scientific observations must be objective and capable of being repeated and verified by others. a) Calculatethe energy. In terms of pressure, 760 mm Hg = 1 atm. Astronomers now know that surrounding the main body of our Galaxy (which our various kinds of telescopes have shown to us) and our fainter halo of stars there is One star cluster has formed an F, O, A, and a K spectral type main sequence stars. A pure substance that cannot be broken down by chemical means into simpler substances is called a(n) element. Ayer argued, there are no facts that can verify metaphysical theories like idealism and realism, one way or another. O must be consistent with previous, universally accepted scientific concepts. A scientific hypothesis is A absolute B complex C simple D tentative Type MC from CHM 119 at University Of Dubuque The nuclear model of the atom was constructed from which fundamental experiment? A.8.87 10-14m B.1.13 1010m C.8.87 10-17m D.8.87 10-11m E.1.13 1013m. A farmer has 19 sheep All but 7 die How many are left? [T/F] When we observe the very distant stars and galaxies, we see them as they are at the present time (or nearly the present time), since light travels at the max possible speed. A brief statement summarizing many observation of a physical phenomenon is called a . [MC] The process of breaking light down into its component colors creates. if i could, then i would, i'll go ______ you will go? Mass is a better measure of the amount of matter than weight is because: b) uses only physical changes or processes. A scientific hypothesis is. VALIDATION: The key to experimental repeatability and a sound scientific publication. Which one of the following is NOT part of Daltons atomic theory? Publishing results of research projects in peer-reviewed journals enables the scientific and medical community to evaluate the findings themselves. , t a recent data breachcoding for accessing locked accountsguidelines for employees' use of personal devicessales copy for a new type of savings account. when the biotech company amgen confirmed the results of only six out of 53 "landmark" cancer biology studies, lead author glenn begley noted that the "non-reproducible papers shared a number of. Her proposal is called a: Hypothesis What characteristics must a hypothesis have to be useful in science? When we exploded the hydrogen balloons, which of the following was produced: When we did the electrolysis of water demo, which of the following was produced in the greatest quantity: B) the study of matter and the changes it undergoes. $$ Must be based on scientific knowledge, must be logical, and must be falsifiable. Correct the false statements. When inhabitants of Galaxy A see the light from the explosion, what is the lookback time they associate with Galaxy B? What is the density of the metal piece in oz/in 3 ? and measurable another person would be able to do the exact same How many protons are there in a gold atom? amount of antibiotic added to a bacterial culture 3. which of the following statements about basic research is NOT correct? D) An established theory is based on evidence, so the new results must be incorrect. Note that for each location drawn, Earth is correctly shown with its rotational axis tilted at an angle of $23.5^{\circ}$. Using the factor-unit-method, how would you set up an equation to convert 445 mm Hg of pressure to atmospheres (atm)? Saccharin has been shown to be a very weak carcinogen (a substance that causes cancer) in animal tests, but there is little evidence of carcinogenicity in humans. Daltons explanation is an example of a scientific: Atoms of the same element that have different masses are called: D) the decomposition of compounds by electricity. She is engaged in: a) Basic research is carried out to develop a particular product. A) The old theory has to be discarded in favor of a new theory. Farthest from the Sun? Scientific results must be verified by Further Experiment A brief statement summarizing many observations of a physical phenomenon is called a Scientific law Kim Chemist proposes that increasing the proportion of butadiene in her glue formulation will make the glue stickier. B) movement of electrons from higher energy states to lower energy states in atoms. Each time they measured the sample, its shape changed to match the shape of the container. testable and measurable results. This nature of a scientific theory based on falsifiability, however, dictates that a theory can be tested and falsified, but it can never be logically verified. To make your hypothesis considered scientific it must have 4. which of the following statements about basic research is NOT correct? This is primarily by implication, whereby the definition of a scientific theory forbids specific events, observations, or occurrences. Physical attractiveness is the degree to which a person's physical features are considered aesthetically pleasing or beautiful.The term often implies sexual attractiveness or desirability, but can also be distinct from either. Dalton's explanation is an example of a scientific: D) predicting monetary values of elements. Listed below are the distances, in kilometers (km), between the Sun and Earth for four months of the year. If Mars is about 120 million km from Earth at that moment, what is the FASTEST her message can reach her mother? Scientific results must be verified by a great many scientists. We say this galaxy has a lookback time of 1 million years . Which of the following statements about basic research is NOT correct? Consulting noted scientific authorities C. Further experiment D. Government agencies Further experiments The results of an experiment are easiest to interpret when the experiment has______variable(s). C) New results should be verified by more experiments before it is accepted. Therefore, potassium bromide: A) must be a mixture. This is an example of: When electricity is passed through molten potassium bromide, two simpler substances, potassium and bromine, are produced. Question Completion Status: Moving to the next question prevents . Scientific results must be verified by further experiment. (1) 0.33 M (2) 0.75 M (3) 3.0 M (4) 6.0 M. The isotope of an unknown element, X, has a mass number of 79. She collects soil samples at various d must be verified by the leading authorities in the field. What would be the price range of the smartphones with a MediaTek Dimensity 1080 chipset? B) Atoms change into other atoms in chemical reactions. B. liquid Studies have also shown that artificial sweeteners provide little benefit to those who want to lose weight. Scientific results must be verified by: A. Constructing plausible theories B. The scientific method is a process for gathering data and processing information. Give an example of a scientific question that could be investigated with an experiment. A chemist employed by an airplane manufacturer investigates new . The correct name for H2SO3 would be Sulfurous Acid. 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