Scientists Crossword Puzzle

QUESTIONS LIST: thales : a greek scientist in 640s-540s bc he studied the sky, moon, and stars, anaximander : a greek scientist in 500 bc he is believed to be one of thale's students and _ studied the origin of the human race, aristotle : a greek scientist in 384-322 bc he studied living things, alchemy : lived during the dark ages and tried to find a way to transform lead into gold, leucippus : a greek scientist in the early 400s bc he found out that matter is made up of atoms, ptolemy : a greek scientist in 100-170 ad he studied the heavens and the planets and stars, democritus : a greek scientist in 460s-370s bc he came up with an analogy of how to explain atoms and he also thought that matter was like sand, archimedes : a greek scientist in 287-212 bc he used math to explain why things were the way they were, imhotep : a scientist in 260 bc and studied the human body and injuries, anaximenes : a greek scientist in 546 bc he believed that the air was the most basic material in nature, hypothesis : a proposition made as a basis for reasoning, without any assumption of its truth, science : the systematic study of the natural world through observation and experimentation to formulate general laws