Question

1. he published the laws of planetary motion stating that the orbits of planets were elliptical, and not perfectly circular.

a. tycho bache
b. johannes kepler
c. william harvey
d. ptolemy

1. what tool is galileo credited for inventing to help him with his discoveries?

a. gyroscope
b. periscope
c. telescope
d. astrolabe

Explanation:

Question 5

Johannes Kepler formulated the laws of planetary motion, including the fact that planetary orbits are elliptical. Tycho Brahe (note: the name in the option has a typo, likely "Tycho Brahe") was an astronomer who collected data, William Harvey studied the circulatory system, and Ptolemy proposed a geocentric model with circular orbits.

Galileo is credited with improving the telescope for astronomical observations, which helped his discoveries about celestial bodies. A gyroscope is for measuring orientation, a periscope is for viewing over obstacles, and an astrolabe was used for navigation and astronomy but not invented by Galileo for his key discoveries.

Answer:

b. Johannes kepler

Question 6