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Earth Science Grade 6 Unit 2 Lesson 1 Scientists
Terms in this set (10)
Greek scientist who first stated that the Earth revolved around the Sun, and rotated on its axis.
A Greek Philosopher, taught Alexander the Great, started a famous school, studied with Plato, and said the Earth was the center of all things.
Alexandrian astronomer who proposed a geocentric system of astronomy that was undisputed until Copernicus (2nd century AD) developed the idea of the "wheels-on-wheels" system.
This astronomer stated that the orbits of planets around the sun were elliptical, the planets do not orbit at a constant speed, and that an orbit is related to its distance from the sun. These are called the ___________ Laws.
He was the first person to use a telescope to observe objects in space. He discovered that planets and moons are physical bodies because of his studies of the night skies. He first saw four moons of Jupiter. He developed the heliocentric model.
Discovered that Venus goes through phases similar to the phases of Earth's moon.
Replaced circles with ellipses in a geocentric model of the universe
Attempted to measure the relative distances to the moon and the sun
Developed the heliocentric model
Devised a model of the universe with the Sun at the center, and not earth. His heliocentric model was better than Ptolemy.
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