Human Systems
What is the largest organ in the human body?
The skin
What is the fastest land animal?
The cheetah
What is the closest planet to the sun?
Mercury
What is the measure of how cold or hot something is?
temperature
What english alphabet letter does not appear in the name of any US state?
The letter Q
What is the study of living organisms called?
Biology
What is the only ave that can fly backwards?
(note: Aves is the classification for birds)
hummingbird
What is the study of the stars, planets and space called?
astronomy
What is the process by which a liquid becomes a solid?
Freezing
The real name for this symbol # isn't hashtag, it's:
octothorpe
What is the process of breaking down food into smaller molecules called?
digestion
What is the slowest land mammal?
The Sloth
What is the third planet from the sun?
Earth
What is the process of turning a gas into a liquid?
Condensation
This children's toy was original sold as wallpaper cleaner:
Play-doh
What gas is exhaled by humans?
Carbon Dioxide
What mammal can sleep 22 hours a day?
The koala
What is the hottest planet in the solar system?
Venus
What is the process of turning a liquid into a gas?
evaporation
chalk is made from:
fossils
What is the main function of the muscular system?
Movement
What animal has the most teeth?
The snail
What is the phenomenon where the moon passes directly between the sun and earth?
solar eclipse
What is the process of water moving from the atmosphere to the ground?
How many different elections did Abraham Lincoln lose before becoming U.S. President?
5