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21st Century Astronomy (4th Edition) by Bradford Smith, George Blumenthal, Laura Kay

By Bradford Smith, George Blumenthal, Laura Kay

Teaches scholars to imagine like scientists.

Authors Laura Kay and Stacy Palen have built pedagogy that is helping scholars comprehend the method of technological know-how, and the way actual ideas are used to find the origins of the universe. The authors emphasize how we all know what we all know within the figures, textual content, and end-of-chapter material.

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Sample text

Although modern physics contains Newtonian physics, the understanding of the universe offered by modern physics is far more sublime and powerful than the earlier understanding that it subsumed. As you read this book, you will encounter many discoveries and ideas that forced scientists to abandon earlier notions that ultimately failed the test of observation and experiment. The rigorous standards of scientific knowledge respect no authorities. No theory, no matter how central or how strongly held, is immune from the rules.

The scientific method consists of observation Process of Science THE SCIENTIFIC METHOD The scientific method is a representation of the path by which an idea or observation is tested for validity. Start with an observation or idea. Suggest a hypothesis. Make a prediction. If the test does not support hypothesis, revise the hypothesis or choose a new one. Perform a test, experiment, or additional observation. If the test supports the hypothesis, make additional predictions and test them. An idea or observation leads to a falsifiable hypothesis that is either accepted as a tested theory or rejected, on the basis of observational or experimental tests of its predictions.

2 Reading a Graph Change in vertical axis __________________________ Change in horizontal axis (15-10) kilometers Slope = ___________________ = 1 km/min (15-10) minutes The car is traveling at 1 km per minute, or 60 km/h. The slope of a line often contains extra information that is useful. ) Many observations of natural processes do not make a straight line on a graph. Of these “nonlinear” processes, one of the most important is the exponential. Think about getting sick. m. m. you feel a little tired.

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