Physical Science
How many hydrogen atoms are in one molecule of water?
2
Which planet is closest to the sun in our solar system?
Mercury
How many hearts does an octopus have?
3
Who first formulated the theory of natural selection?
Charles Darwin
Diamonds are mostly composed of what element?
Carbon
How long does it take sunlight to go from the sun's surface to Earth?
8 minutes
What is the longest bone in the human body?
Femur
Who developed the theory of special relativity?
What is the chemical symbol for potassium?
K
What is the most abundant gas in Earth's atmosphere?
Nitrogen
Which creature has the biggest heart?
Blue Whale
Who was the first woman to win a Nobel prize?
Marie Curie
In what type of matter are atoms most tightly packed?
Solids
What type of rock is obsidian?
Igneous
Hematology is the branch of medicine that studies what?
Blood
Which set of scientific laws was Isaac Newton best known for?
Planetary motion
Which method of heat transfer best describes a lava lamp?
Convection
What is the name of the lowest layer of Earth's atmosphere?
Troposphere
Why are sharks different from fish?
They have no bones.
How many patents did Thomas Edison accumulate in his lifetime?
2,332