What do you call curved lines on a weather map connecting regions of equal atmospheric pressure?
isobars
100
Which organ in the human body is the most commonly transplanted from one human to another?
Kidney
100
What is the name of the process by which green plants convert the energy of sunlight into chemical energy?
PHOTOSYNTHESIS
100
What chemical element discovered in 1789 did Marie Curie prove to be radioactive in 1896?
Uranium
200
What does a palaeontologist study?
Forms of life in prehistoric times/fossils
200
It was the fastest growing household product of the 1980's.
In 1980 only 14% of US homes had one but by 1990 over 80% of homes had one… what is it?
Microwave oven
200
Does the nucleus of an atom have a positive, negative, or neutral charge?
Positive
200
What contracting membrane regulates the amount of light entering the eye?
Iris
200
In March, 1998, NASA announced that an unmanned lunar spacecraft had discovered up to 6 billion tons of ...
what? ... on the moon?
ICE
300
What does a ornithologist study
Birds
300
ABout 120 drops of water will fill what?
a teaspoon
300
How many planets in our solar system have no moon?
2 - Mercury and Venus
300
According to astonomy, how many miles are there in one astronomical unit?
93 MILLION MILES
300
Between noon and midnight, how many times do the hands of a clock form a right angle?
23 times
400
The invention of the match for starting fires was made possible about 1680, when scientists realized that two chemical elements when rubbed together would burst into flame. which two elements?
phosphorus and sulfur
400
This small item, designed to hold things together was invented in 1858 and millions of millions of them have been sold ever since.. What is it?
Safety pin
400
What are the names of the two bones which extend from the elbow to the wrist?
Radius and Ulna
400
Animals characterized by a segmented spinal column are called vertebrates. In biology, there are five classes of vertebrates, one of which is mammal.
What are the other four?
Amphibians, Birds, Fish and Reptiles
400
German physicist Gabriel Fahrenheit, in the early 18th century, called 32 degrees the freezing point of water. And 0 degrees on his scale represented the freezing point of what mixture?
SALT WATER - Equal ice-salt mixture
500
what are the 3 main commercial uses for wax ( whether animal vegetable or mineral) ?
polishes - cosmetics - candles
500
Which European company introduced the home video recorder in 1972?
Philips
500
Astroids are small irregular shaped bodies sometimes called minor planets which orbit the sun and are most frequently found between which 2 planets?
Mars and Jupiter
500
in 1971 Mariner 9 became first man made object to orbit a foreign planet. Which one?
Mars
500
What was the name of the controversial herbicide used by the United States during the Vietnam War to defoliate jungles?