Which is the best conductor of electricity: wood, ceramic or copper?
copper
About how many kinds of atoms are there: 25, 50 or 100?
100 (109 to be correct)
What is your body's largest organ?
the skin
Were microscopes invented in the 1600s, 1800s or 1900s?
1600s
What naturalist developed the theory of "survival of the fittest"?
Charles Darwin
A person who is diabetic should not eat foods containing ... what?
sugar
What colour absorbs the most sunlight?
black
What do we call the scientist who studies the weather?
a meteorologist
Does Lyme disease come from frogs, fleas or ticks?
ticks
What system in your body carries messages to and from your brain?
the nervous system
What green material in plants draws energy from the sun?
chlorophyll
What do we call the doctor who specializes in reading X-rays?
a radiologist
Are the worker bees male or female?
female
In chemistry what does the symbol "C" stand for?
carbon
A male's sex cells are called "sperm". What is the word for a female's sex cells?
eggs
When a person has tuberculosis, what part of the body is affected?
the lungs
How many pairs of ribs do you have?
12
What animal group does an ornithologist study?
birds
Who discovered the law of gravity?
Isaac Newton
After a male and female praying mantis mate, which one eats the other?
The female eats the male.
Is a spider classified as an insect, a crustacean or an arachnid?
an arachnid
Which is a cardiovascular exercise: jumping rope or lifting weights?
jumping rope
What natural product is most often used in manufacturing plastics?
petroleum (crude oil)
What does carbon dioxide change into when it freezes?
dry ice
The inside of a lightbulb is a vacuum. True or false?
true
What two gases make up most of the air that we inhale?
nitrogen and oxygen
One way to reduce noise pollution is to plant more trees. True or false?
true
Does lightning cause thunder or thunder cause lightning?
Lightning causes thunder.
Which expand the most when it is heated: a liquid, a solid or a gas?
a gas
What natural phenomenon creates sand dunes?
the wind
What kind of chip makes a computer work?
a microchip