What Happens When You Mix Vinegar and Baking Soda?
2017年2月28日 — How hungry are you when you get home from a busy day at school? Starving? Ravenous? Famished?Those are just a few of the adjectives that kids might use to describe their hunger pains when they burst through the front door.. Instead of starting on homework, the first stop many kids make is the refrigerator.If you've ever searched the refrigerator for food after …
How Do Water Clocks Work? - Wonderopolis
How do you tell time? Nowadays, many people look at a phone or smart watch to see what time it is. Others might still consult a wall clock or old-fashioned wrist watch for the hour. But clocks seem to be everywhere--in our cars, on the stovetop, on our computer screens.
What Is a Mime? - Wonderopolis
2014年8月13日 — Have you ever been wandering around the streets of a city and happened upon a street performer wearing interesting clothes, lots of white make-up, but not making a sound?If so, chances are you've met a mime!. Mime is a form of silent art that involves acting or communicating using only movements, gestures, and facial expressions. A person performing …
What Is the Space-Time Continuum? - Wonderopolis
When you read today's Wonder of the Day question, what comes to mind? Do the words "space-time continuum" conjure up thoughts of light sabers from Star Wars and spaceships from Star Trek? If so, that's understandable.Something called a "space-time continuum" certainly sounds like it would be out of this world.
Wonders with Charlie - Wonderopolis
Charlie Engelman is a writer, producer, and director of two National Geographic television series, Nature Boom Time! and Weird But True. His career as a science communicator began while he was still an undergraduate in ecology at the University of Michigan when his proposal, Nature Boom Time, was chosen from over 700 worldwide entries in Nat Geo’s “Expedition Granted” …
Who are the Anunnaki? - Wonderopolis
What comes to mind when you think of ancient civilizations? You might think of the Romans.Maybe Maya pops into your head. Perhaps you think of the Aboriginal people of Australia. Today’s Wonder of the Day is another great ancient civilization--the Sumerians.. Situated in Mesopotamia, ancient Sumer was a collection of city-states. The Sumerians had …
What Happens to Sugar When It Dissolves? - Wonderopolis
Try It Out. Ask an adult to help you try out the activities below. Looking for some hands-on practice? Ask an adult to help you with one of these fun solubility experiments!Be sure to follow the directions and clean up after.
Is the Glass Half-Full or Half-Empty? - Wonderopolis
Want to perform a quick and easy psychological test on friends and family members? Grab a clear glass from the cupboard and fill it halfway with water.Place it on the table and ask friends and family members to describe it.. Some people will probably say the glass if half-full. Others may look at it and proclaim that it's half-empty. Since both groups would be correct, what does this …
How Did Earth Begin? - Wonderopolis
2014年9月22日 — This planet we call home is an amazing place. It's been around for as long as we can remember. But how did it get to be that way? Exactly how did Earth come into existence?
What is a Catapult? - Wonderopolis
Today’s Wonder of the Day was inspired by Dayon . Dayon Wonders, “What is a catapult?” Thanks for WONDERing with us, Dayon !