Because of ________, images in small telescopes are more blurred ...

[bcretired]

Because of ________, images in small telescopes are more blurred than with larger objectives.
 
  Fill in the blank(s) with correct word

Question 2

Where does the energy come from to create tidal bulges?
 
  A) The Sun's gravity
  B) The orbital and rotational motion of the Earth and Moon
  C) The heat from Earth's core
  D) The movement of the Earth's oceans.
  E) The temperature difference between the Moon's surface and its core

[Ahnyah]

Answer to Question 1

diffraction

Answer to Question 2

B

[bcretired]

Thanks for the timely response, appreciate it

[debra928]

Great answer, keep it coming