The extremely cold temperatures in the polar region of moon mean that it can act as a kind of __________ where things do not undergo much change....?
(A) Time capsule
(B) Light capsule
(C) Meta capsule
(D) Natural capsule
✅ Correct Answer:Time capsule
Comments
The extremely cold temperatures in the polar region of moon mean that it can act as a kind of __________ where things do not undergo much change....?
The echo (reflected sounD. will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least ________...?
(A) 1120 ft
(B) 120 ft
(C) 56 ft
(D) 100 ft
✅ Correct Answer:56 ft
Comments
The echo (reflected sounD. will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least ________...?