What Is a Mime? - Wonderopolis
Aug 13, 2014 · Mime is a form of silent art that involves acting or communicating using only movements, gestures, and facial expressions. A person performing mime is also called a mime. Non-verbal communication dates all the way back to the first human beings. Before there was spoken language, gestures and facial expressions were used to communicate.
What Is the Space-Time Continuum? - Wonderopolis
The space-time continuum consists of four dimensions: the three dimensions of space (length, width, and height…or up/down, left/right, and forward/backward, depending upon how you wish to think of them) plus the fourth dimension of time. Einstein's theories of relativity spurred other scientists to investigate the relationships between space ...
What Happens When You Mix Vinegar and Baking Soda?
Feb 28, 2017 · The first reaction is the acid -base reaction. When vinegar and baking soda are first mixed together, hydrogen ions in the vinegar react with the sodium and bicarbonate ions in the baking soda. The result of this initial reaction is two new chemicals: carbonic acid and sodium acetate. The second reaction is a decomposition reaction.
How Many Animals Are There in the World? - Wonderopolis
Aug 4, 2017 · Not much! The same study estimates that 86% of all land species and 91% of all sea species have not yet been discovered or described! Sticking to the species we do know about, let's look at some amazing numbers for particular groups of animals. Scientists believe there are over seven billion humans in the world today.
Where Do Last Names Come From? - Wonderopolis
Oct 10, 2013 · China was one of the earliest civilizations to use surnames. People there reportedly took on family names over three thousand years ago to help improve their census. For many years, surnames were passed down by mothers. Today, though, most children in China take their father’s last name, as do those in much of the world.
What Would Earth Be Like Without the Sun? - Wonderopolis
Dec 19, 2014 · The same would go for the many other celestial bodies in the sky, such as planets, which we see only because of the Sun's reflected light. Without the Sun's warmth, Earth would quickly become a much colder place. Fortunately, Earth retains heat fairly well, so humans wouldn't freeze instantly. Life would get much more difficult immediately, though.
Who are the Anunnaki? - Wonderopolis
The Sumerian civilization existed from 4100 B.C.E. until around 1750 B.C.E. The name “Sumer” meant “land of the civilized kings.”. The Sumerians were one of the first groups to divide time into hours and minutes. They also had a complex religion that involved gods called the Anunnaki. The Anunnaki were believed to be in charge of ...
How Did Earth Begin? - Wonderopolis
Sep 22, 2014 · The largest of the planetesimals became the earliest forms of the planets that make up our solar system today. Slowly, they organized themselves in orbits around the Sun and their gravitational pulls cleared the areas around them of rocky material. Scientists believe Earth formed in this way about 4.6 billion years ago.
What Is a Rube Goldberg Machine? - Wonderopolis
May 21, 2014 · You probably have, even if you didn’t know what it was. A Rube Goldberg machine is a contraption that uses a chain reaction to carry out a simple task. It performs a very basic job in a complicated way. Let’s look at an example. We’ll describe a Rube Goldberg machine that wipes a person’s chin with a napkin.
What Happens to Sugar When It Dissolves? - Wonderopolis
If you’re thinking of lemonade, sweet tea, or sweetened coffee, you’re right. When a solute dissolves well in a solvent, chemists say it has high solubility. Sugar has high solubility in water. Plenty of other things do, too—like salt, most acids, and some vitamins. There are also ways to increase a substance ’s solubility.