Problem: What was the name of Thomas Jefferson's house?
Answer: monticello

Problem: Which country, after 500 years of Ottoman domination, became independent in 1912, adopted a republican form of government in 1920, became a kingdom in 1928, came under Italian control in 1939, became a Communist state after World War II, and is now a parliamentary democracy established under a constitution renewed in 1998?
Answer: albania

Problem: The flag of Tunisia consists of which two colours?
Answer: red and white

Problem: Chladni patterns are formed when a surface covered in what is made to vibrate?
Answer:
sand