Aristotle's hypothesis was that: A) lunar eclipses were ...

[altibaby]

Aristotle's hypothesis was that:
 
  A) lunar eclipses were created by our shadow.
  B) only a spherical Earth would always cast a circular shadow on the Moon.
  C) lunar eclipses would have to happen every full moon.
  D) the Sun lay at the center of the planet orbits.
  E) the Moon orbited the Earth.

Question 2

An effective theory must:
 
  A) have been proven.
  B) must have been around for centuries or longer.
  C) be continuously tested.
  D) include mathematical formulae.

[brittrenee]

Answer to Question 1

B

Answer to Question 2

C

[altibaby]

Thanks for the timely response, appreciate it

[parker125]

Gracias!