Human Body
This organ is responsible for pumping blood throughout the body.
What is the heart?
This layer of the Earth is solid and composed mainly of iron and nickel.
What is the inner core?
The smallest unit of an element that retains its properties.
What is an atom?
This force keeps objects on the ground and pulls them towards the Earth.
What is gravity?
This is the hardest natural substance on Earth.
What is diamond?
This system in the body is responsible for fighting off infections.
What is the immune system?
The process by which water vapour turns into liquid water.
What is condensation?
Majority of elements are this type of substance.
What are metals?
This is the rate of change of velocity/speed of an object.
What is acceleration?
This planet is known as the Red Planet.
What is Mars?
The basic unit of life, found in all living organisms.
What is the cell?
The crust of the Earth is broken up in to these.
What are tectonic plates?
This subatomic particle has a negative charge.
What is an electron?
You can calculate this by dividing distance by time.
What is speed?
This process allows plants to convert sunlight into energy.
What is photosynthesis?
This organ filters the blood to remove wastes.
What is the kidney?
The phenomenon that causes the seasons on Earth.
What is the tilt of the Earth's axis?
The pH scale measures the acidity or basicity of a solution, ranging from 0 to this number.
What is 14?
The phenomenon when light bends as it passes from one medium to another.
What is refraction?
This is the largest mammal in the world.
What is the blue whale?
These are the building blocks of proteins.
What are amino acids?
This gas makes up about 78% of the Earth's atmosphere.
What is nitrogen?
This law states that mass is neither created nor destroyed in a chemical reaction.
What is the law of conservation of mass?
This principle states that for every action, there is an equal and opposite reaction.
What is Newton's third law of motion?
This organ in the human body is primarily responsible for detoxifying chemicals.
What is the liver?