Woo-hoo!
I was using educated guesses on those two questions, and I guessed correctly. I knew the boiling point is different, but I was afeared I might have gotten it switched about. I wasn't sure about the loudness of a sound wave, either.
The boiling point I got switched around. I knew I answered backwards before the next page loaded.
I honestly got the magnifying glass question wrong. *shrug*
I'm not sure how so many got the sound thing wrong, since the correct answer has the answer built in (amplified... Louder)
I couldn't remember the name of the person who created the Polio vaccine but I knew what the other three people where known for.
Which would be why it's a good question. Process of elimination and I bet you know what the other three are famous for.
As far as the astrology question goes, it's not any kind of science (much less a social science) the question was gauged to determine how well people know what feild of study is what. It's another "trick" question. I'll bet a lot of the people who get that wrong don't no the difference between that and astronomy.