Explain how the telescopic discoveries of Galileo could be used in support of Copernicus
What will be an ideal response?
He found spots on the Sun, which moved across its face as the Sun spins; if the Sun could rotate on its axis, so could the Earth. He found craters and mare on the Moon, imperfect against the perception of heavenly perfection described by the Greeks. He noted that Venus showed an entire cycle of phases as it revolved completely around the Sun, not confined to Ptolemy's epicycles always between us and the Sun. He found four moons around Jupiter, moving fastest when closest, and slower farther out in their orbits; this was a model of the Copernicus solar system. He resolved the Milky Way into many faint, distant stars, showing the "Celestial Sphere" of the Greeks was much vaster than Ptolemy had envisioned.
You might also like to view...
How were the heavier elements that we have on earth produced?
a) They have always been here so they were never produced b) all elements were produced in the Big Bang c) all the heavy elements on earth were produced by our Sun at the center of our solar system and some elements are also produced by plants d)By nuclear fusion and nuclear synthesis processes in stars that predated our Sun and nuclear processes that occur when the stars undergo a supernova
We have already launched a spacecraft bound for Alpha Centauri
Indicate whether the statement is true or false
Most terrestrial planets have portions of their surface that appear to be significantly older than other portions of their surface. What evidence suggests that the surface of Venus is all of the same age?
a. Photos taken by probes that landed on Venus showed that all of the rocks were of the same age. b. The craters on Venus are randomly distributed in size and number across the surface. c. The volcanoes on Venus are not found in isolated groups, but are scattered around the planet. d. Photos taken by probes that landed on Venus showed that all of the rocks were of the same age and the craters on Venus are randomly distributed in size and number across the surface. e. Photos taken by probes that landed on Venus showed that all of the rocks were of the same age, all of the rocks were of the same age and the craters on Venus are randomly distributed in size and number across the surface, and the volcanoes on Venus are not found in isolated groups, but are scattered around the planet.
An artillery shell explodes in midair and breaks up into many fragments. Which of the following statements are true regarding conditions immediately before and immediately after the explosion: I
The total momentum of the fragments is equal to the original momentum of the shell. II. The total kinetic energy of the fragments is equal to the original kinetic energy of the shell. A) Statement I only B) Statement II only C) Both Statement I and Statement II D) Neither statement is true.