Science and nature 4

1. What does a normal human being have 206 of?
BONES
2. What is the common name given to the colourful, but harmless,
electrical discharges sometimes seen on ship’s masts and aircraft
wings?
ST. ELMO’S FIRE
3. In 1796 Edward Jenner produced the first effective vaccine for which
disease?
SMALLPOX
4. What is the leaf of a fern called?
A FROND
5. Which metal has the chemical symbol Sn?
TIN
6. Which organ of the body produces insulin?
PANCREAS
7. When does a Pound equal 41⁄2 grams?
WHEN IT’S A POUND COIN
8. The invention of which product in 1867 first made the name of Alfred
Nobel famous?
DYNAMITE
9. Which gas is the main constituent of Marsh gas, Swamp gas, Fire
Damp, Natural gas and a number of others?
METHANE
10. What weight is equivalent to 1 KILLOGRAM in pounds?
2.205