Unit 5 people

Question 1

who was Hans Lippershey

Answer 1

he was the first person to invent a telescope in 1608

Question 2

what contributions were made by Galileo

Answer 2

Galileo agreed with Copernicus’s sun-centered model and improved the telescope and observed different planets along with the moon and the sun

Question 3

who was Ptolemy

Answer 3

corrected Aristotle earth-centered model so that the planets were attached to small spheres called “epicycles” which were attached to the main sphere

Question 4

who was Copernicus

Answer 4

proposed the sun-centered model in which the sun. was. in the center, and the earth, moon, and planet revolved around it

Question 5

who was newton

Answer 5

designed the reflecting telescope to solve the problem with the refracting telescope. Also introduced the concept of universal gravitation which stated that “all objects attract other objects

Question 6

what contributions did Kepler make?

Answer 6

fixed the problem with the sun-cented model. He concluded that planets orbits are elliptical, rather than circular

Question 7

what contributions did Kepler make?

Answer 7

fixed the problem with the sun-cented model. He concluded that planets orbits are elliptical, rather than circular

Question 8

list the earliest contribution to the most recent contribution the order is&raquo_space;»

Answer 8

1. Aristotle proposed that earth is in the center and all the planets revolve around the earth (geocentric)
2. copernicus propsed the heliocentric model of planetary motion
3. Galileo used the telescope to confirm the sun-centred model of planetary movement
4. Kepler proposed that the planets revolve around the sun in elliptical orbit