Biology
What is the basic unit of life?
Cell
What is the chemical symbol for water?
H₂O
What force keeps planets in orbit around the sun?
Gravity
What planet is known as the Red Planet?
Mars
What is the outermost layer of the Earth called?
Crust
What gas do plants absorb during photosynthesis?
Carbon dioxide
What is the hardest natural substance on Earth?
Diamond
What is the speed of light?
299,792 kilometers per second
What is the largest planet in our solar system?
Jupiter
What natural process causes earthquakes?
Tectonic plate movements.
What part of the cell contains genetic information?
Nucleus
What is the pH level of pure water?
7
What is the unit of electrical resistance?
OHM
What is the name of the galaxy that contains Earth?
Milky way
What is the most abundant gas in Earth’s atmosphere?
Nitrogen
What is the process by which organisms make their own food using sunlight?
Photosynthesis
What is the chemical formula for salt?
NaCl
What law explains the relationship between force, mass, and acceleration?
Newton’s Second Law of Motion.
What is the closest star to Earth?
Sun
What type of rock is formed from molten lava?
Igneous rock.
What molecule carries genetic information in living organisms?
DNA
What gas is most abundant in Earth's atmosphere?
Nitrogen
What is the principle that describes why airplanes can fly?
Bernoulli’s Principle.
How long does it take for Earth to orbit the sun?
365 days
What causes tides in the Earth's oceans?
The gravitational pull of the moon.