Anatomy of the Human Body
This organ pumps blood throughout your body.
What is the heart?
The metric system is based on multiples of this number.
What is ten?
This element, found in water, has the chemical symbol "O."
What is oxygen?
This constellation is shaped like a hunter and contains the bright star Betelgeuse.
What is Orion?
This is the fastest thing in the universe.
What is light?
This system includes your brain, spinal cord, and nerves.
What is the nervous system?
There are 1,000 of these small units in a liter.
What are milliliters?
The element with the symbol "Au" is this valuable metal.
What is gold?
This zodiac constellation is named after a lion.
What is Leo?
The bending of light as it passes through water or glass is called this.
What is refraction?
This bone is the longest and strongest in the human body.
What is the femur?
A kilometer is equal to this many meters.
What is 1,000?
The atomic number of an element represents the number of these particles.
What are protons?
Ancient civilizations used constellations mainly for these two purposes.
What are navigation and telling seasons?
The entire range of light, from radio waves to gamma rays, is called this.
What is the electromagnetic spectrum?
These tiny air sacs in your lungs help you breathe by exchanging oxygen and carbon dioxide.
What are alveoli?
The metric unit used to measure temperature is named after this scientist.
What is Celsius?
This gas makes up about 78% of Earth's atmosphere.
What is nitrogen?
This small, faint constellation contains the North Star.
What is Ursa Minor?
The pitch of a sound depends on how fast these vibrate.
What are sound waves?
The largest organ in the human body is this.
What is the skin?
This is the metric unit used to measure mass.
What is the gram?
The periodic table was created by this Russian scientist.
Who is Dmitri Mendeleev?
The Big Dipper is part of this larger constellation.
What is Ursa Major?
Sound travels fastest through this type of material.
What is a solid?