Once you know the level 1 vocabulary well enough to answer many practice questions in a row correctly without making a mistake, your experience points will mount up more quickly. After the 10th correct answer in a row you get a 70 point bonus; after the 20th, 170; and after the 30th, 270. Starting with the 41st correct answer in a row, you earn 24 points for each correct answer instead of 8.