Forget that boring physics textbook. At Museum of Science and Industry, you can learn a physics lesson by standing thisclose to a 20-foot lightning bolt, jumping inside 40-foot-high tornadolike winds, watching an infinitely moving avalanche or triggering your own tsunamis. 5700 S Lake Shore Dr (773-684-1414, msichicago.org). Mon–Sat 9:30am–5:30pm; Sun 11am–5:30pm. $15, seniors $14, kids ages 3–11 $10, kids ages 2 and under free. Discounts for Chicago residents.