Mastermind questions (upper intermediate)

SCIENCE
1. Which vitamin is abundant in citrus fruits?	vitamin C
2. What instrument is used for measuring temperature?	a thermometer
3. Who developed the theory of evolution by natural selection?	Charles Darwin
4. What gas do plants absorb from the atmosphere?	carbon dioxide (CO2)
5. What do we call a shape with eight sides?	octagon
6. What is the study of plants called?	botany
GEOGRAPHY
1. Which South American country has the greatest land area?	Brazil
2. What is the capital city of Sri Lanka?	Colombo
3. Which climate is generally hotter and more humid, tropical or temperate?	tropical
4. What do we call a mountain which could erupt?	volcano
5. Antarctica covers which of the earth's poles?	the South Pole
6. On which continent is Sierra Leone?	Africa
SPORTS
1. In which sport would you use a 'sand iron'?	golf
2. In boxing, what do the letters K.O. stand for?	knock out
3. Baseball originated in the U.S.A. in which century?	the 19th century
4. How many rings are there in the Olympic Games symbol?	five
5. Which country won the 1998 FIFA World Cup football tournament?	France
6. Who won the 2003 Wimbledon women's tennis championship?	Serena Williams
MUSIC
1. Which female pop singer had a hit called 'Baby, One More Time'?	Britney Spears
2. What pop group was Michael Jackson in when he was young?	The Jackson Five
3. What type of music did Louis Armstrong play?	jazz
4. What does an orchestra's conductor wave to keep time?	a baton
5. What nationality was Mozart?	Austrian
6. Which rock group is Michael Stipe the lead singer of?	R.E.M.