Why do scientists use the scientific method?
What will be an ideal response?
It is an ingrained way of thinking about and understanding nature for scientists. Scientists try to form hypotheses that explain how nature works. If a hypothesis is contradicted by evidence from experiments or observations, it must be revised or discarded. If a hypothesis is confirmed, it must be tested further. A scientist needs insight and ingenuity to form and test a good hypothesis. Scientists use the scientific method almost automatically, forming, testing, revising, and discarding hypotheses almost minute by minute as they discuss a new idea. Sometimes, however, a scientist will spend years studying a single promising hypothesis. The so-called scientific method is a way of thinking and a way of knowing about nature.
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Which book was authored by Copernicus that explained the Sun as the center of a planetary system?
a. Alfonsine Tables b. De Revolutionibus c. Stderreus Nunctus d. The Prutenie Tables e. The Forerunner of the Universe, Containing the Mystery of the Universe
Heat is thermal energy that matter
A) contains. B) transfers. C) both of these D) none of the above
A thin beam of laser light of wavelength 514 nm passes through a diffraction grating having 3952 lines/cm. The resulting pattern is viewed on a distant curved screen that can show all bright fringes up to and including ±90.0° from the central spot
If the experiment were performed with all of the apparatus under water (which has an index of refraction of 1.33), what would be the TOTAL number of bright spots that would show up on the screen? A) 6 B) 7 C) 12 D) 13 E) 14
Adisa pulls a 50-N crate up a 5.0-m long inclined plane at a constant velocity. If the plane is inclined at an angle of 37° to the horizontal and there is a constant force of friction of 10 N between the crate and the surface, what is the net change in potential energy of the crate?
a. 120 J c. 250 J b. -120 J d. 150 J