Good Riddles

Question: What goes in, down and out; but can't go in, up, out?

Question: How do you tell if a snake is venomous or not?

Question: How do you catch a giraffe? Giraffe bait. How do you catch a shark? Shark bait. How do you catch a master?

Question: On a boat in a lake, there is a rope ladder. The rope ladder is 5 inches off the water. Then one day the lake waters rise 5 inches. How high off the water is the ladder now?

Question: I am first in earth A second in heaven I appear twice in a week But you can only see me once in a year You can also see me in the middle of the sea What am I?