Biology
It is the most common element in the human body...
What is oxygen?
Oxygen is the most common element in the human body, making up almost 63% of the average human, followed by carbon (19.37%), hydrogen (9.31%), and nitrogen (5.14%).
Is the smallest recognised division of a chemical element and is made up of three particles: the proton, neutron and electron.
What is an atom.
99% of the mass of the atom is held in the central nucleus, comprising the protons and neutrons. The negatively charged electrons whip around the nucleus in orbital shells of different energies.
The number of seconds in a minute...
What is 60?
The third planet from the Sun...
What is Earth?
This essential gas is important so that we can breath...
What is Oxygen?
The scientific term for the production of light by living organisms...
What is bioluminescence?
Many plants and animals are capable of producing visible light. The scientific term for this phenomenon is bioluminescence.
This is how scientists have organized the 100+ elements that make up all matter.
What is the periodic table?
It was proposed in 1869 by Russian chemist, Dmitri Mendeleev. Unlike previous attempts to organize the elements by properties, Mendeleev arranged the elements in order of the mass of their electrons. He also left gaps for elements that had not yet been discovered. This allowed him to predict what those undiscovered elements would be like.
The number of meters in a kilometer...
What is a thousand?
The number of the planets in our solar system...
What are 8 planets?
It is the nearest planet to the sun...
What is Mercury?
Unlike most other fish, sharks have no...
What is bones?
Unlike most other fish, a shark has no bones! Its skeleton is made of cartilage, a material somewhat softer and more flexible than bone.
These are the three states of matter...
What is solid, liquid and gas?
The number of centimeters in a meter...
What is 100?
It is the hottest planet in our solar system
What is Venus?
The number of teeth an adult human has...
What is 32?
The human organ that cleans fifty gallons of blood every day...
What are kidneys?
Your kidneys filter fifty gallons of blood every day, producing about 1.5 liters of urine!
We get this when atoms join together...
What is a molecule?
The number of grams in a kilogram...
What is 1000?
It is the natural satellite that orbits around the Earth...
What is the moon?
It is the largest planet in our solar system...
What is Jupiter?
This is an organ that insects do not have...
What are lungs?
Insect respiration is accomplished without lungs. In most cases, air is taken in through openings on the sides of the abdomen and thorax called spiracles and transported directly to tissue cells using tracheal tubes.
The only solid elements that assume liquid form at room temperature are...
What are mercury and bromine?
The number of hours in one day...
What is 24?
They are the rocky planets in our Solar System...
What are Mercury, Venus, Earth and Mars?
It is the largest known animal...
What is the blue whale?