Science
What is the closest star to Earth?
Proxima Centauri
What is the smallest planet in our solar system?
Mercury
What is the powerhouse of the cell?
Mitochondria
What force causes an apple to fall to the ground?
Gravity
What is the chemical symbol for water?
H2O
What is the process by which plants make their own food called?
Photosynthesis
What is the hardest natural substance on Earth?
Diamond
What is the largest organ in the human body?
Skin
What is the chemical symbol for gold?
Au
Which planet is known as the Red Planet?
Mars