The safest and simplest way to observe the partial phases of a ...

[asan beg]

The safest and simplest way to observe the partial phases of a solar eclipse is to use _______________ projection.
 
  Fill in the blank(s) with correct word

Question 2

Because the _______________ of the Moon and the Sun vary slightly, the disk of the Moon is sometimes too small to cover the disk of the Sun.
 
  Fill in the blank(s) with correct word

[Ahnyah]

Answer to Question 1

pinhole

Answer to Question 2

angular diameter

[asan beg]

Thanks for the timely response, appreciate it

[bimper21]

Excellent