Human Anatomy
What is the largest organ in the human body?
What is the skin?
Fun Fact: Skin is the human body's largest organ, covering roughly 20–22 square feet and accounting for about 15% of body weight.
Which mammal is known to lay eggs?
What is the platypus?
Fun Fact: Platypus mothers nurse their young with milk secreted through patches on their skin.
What is the term for the force that attracts two bodies toward each other?
What is gravity?
Fun Fact: You Shrink Daily - Gravity compresses the cartilage in your spine throughout the day, making you about half an inch shorter at night than in the morning.
What is the largest ocean on Earth?
What is the Pacific Ocean?
Fun Fact: It covers about 30% of Earth's surface—more than all landmasses combined.
What planet is known as the Red Planet?
What is Mars?
Fun Fact: Because Mars is only about half the size of Earth and has weaker gravity, you could jump three times higher there than you can on Earth.
How many bones are in an adult human body?
What is 206?
Fun Fact: The smallest bone in the human body is the stapes (or stirrup), located in the middle ear. Measuring roughly 3 millimeters long (about the size of a grain of rice).
What is the fastest land animal?
What is the cheetah?
Fun Fact: Cheetah's are capable of reaching speeds between 100–120 km/h (60–75 mph).
Who is known for the theory of relativity?
Who is Albert Einstein?
Fun Fact: He didn't speak until age 3, never wore socks, and loved to play the violin to help him think.
What layer of the Earth is liquid and composed mainly of iron and nickel?
What is the outer core?
Fun Fact: Located over 2,900 kilometers beneath our feet, there is both a solid inner core and a liquid outer core, and is responsible for creating the magnetic field that protects life on Earth.
Who was the first human in space?
Who is Yuri Gagarin?
Fun Fact: He was only 27 when he completed a 108-minute orbit on April 12, 1961, and had to eject from his Vostok 1 capsule to land safely at 7 km altitude.
Which organ is responsible for pumping blood?
What is the heart?
Fun Fact: The human heart is a remarkably powerful organ, beating over 100,000 times daily and pumping roughly 2,000 gallons of blood through 60,000 miles of vessels.
Which bird is known for its ability to mimic sounds?
What is the lyrebird?
Fun Fact: They are capable of imitating over 20 other bird species, plus artificial sounds like chainsaws, cameras, and alarms.
In 1882, this person famous for creating the light bulb, opened the first power plant in New York City.
Who is Thomas Edison?
Fun Fact: Known for the lightbulb, phonograph, and motion picture camera, he was largely homeschooled, partially deaf, and proposed to his wife in Morse code.
What natural phenomenon that occurs due to the rotation of the Earth?
What is the Coriolis effect?
Fun Fact: In the Northern Hemisphere, hurricanes and tornadoes spin counter-clockwise, while in the Southern Hemisphere, they spin clockwise due to this effect.
What spacecraft was the first to land on the Moon?
What is Apollo 11?
Fun Fact: Astronauts utilized a felt-tip pen to fix a broken circuit breaker for takeoff, flew with less computing power than a modern smartphone, and were quarantined for 21 days upon return.
What type of joint is found in the shoulder?
What is a ball-and-socket joint?
Fun Fact: The shoulder joint is the most mobile, while the hip joint (which also has a ball-and-socket) is more stable and less flexible to support body weight.
What is the largest species of shark?
What is the whale shark?
Fun Fact: They are filter-feeding "gentle giants" that eat tiny plankton, krill, and small fish.
Where does sound travel faster, in the water or in the air?
What is in water?
Fun Fact: Sound travels about 4.5 times faster in water than in air because water is much denser and less compressible, allowing molecules to transfer vibrational energy almost instantly.
Which gas is most abundant in the Earth's atmosphere?
What is nitrogen?
Fun Fact: 78% of the air you are breathing right now is nitrogen gas, and 3% of your body is nitrogen!
What is the name of our galaxy?
What is the Milky Way?
Fun Fact: It contains 100–400 billion stars, including our Sun, and is roughly 13.6 billion years old.
What part of the brain is responsible for coordination?
What is the cerebellum?
Fun Fact: The cerebellum is located at the back of the skull, containing over 50% of the total neurons in the brain despite making up only 10% of its volume.
Which animal is known as the "king of the jungle"?
What is the lion?
Fun Fact: Females do 85–90% of the hunting, while males protect the territory and can roar loud enough to be heard 8km away.
What is the term for the energy of motion, or the form of energy that it possesses due to its motion?
What is kinetic energy?
Fun Fact: If you double the speed of a moving object, its kinetic energy quadruples, not doubles. For example, A car traveling at 60 mph has four times the destructive kinetic energy of a car traveling at 30 mph, meaning it takes four times the braking force (and distance) to stop.
What scale is used to measure the magnitude of earthquakes?
What is the Richter scale?
Fun Fact: The largest earthquake to affect the Ottawa region in recent history was a 5.0 magnitude tremor on June 23, 2010.
What was the name of the headline space exploration mission of 2026?
What is Artemis II?
Fun Fact: NASA's historic crewed lunar flyby launched on April 1, 2026, marking the first human trip beyond low Earth orbit in over 50 years.