The Greeks were outnumbered 2 to 1, and the Persians waited for the Greeks to advance. They did not, so finally the Persians retreated to their ships. After the cavalry got on board, the Greeks charged down onto the plain and caught the Persians by surprise as they were standing in the water. They were easily defeated.
8) A few thousand Greeks were defending the narrow mountain pass against many Persians successfully, until a traitor led them around the Greeks to mount a rear attack. Leonidas and a few hundred of his men held them off long enough to let the Athenian navy assemble their ships. It was Persian victory, but an important battle for both sides.
9) The strait of Salamis was near the city-state of Athens.
10) The battle of Plataea was a turning point of the Persian War. When the Greek city-states united, forming the largest Greek army ever, they crushed the Persians. It convinced the Persians to retreat to Asia Minor.