Explore Wonders | Tag: door | Wonderopolis

Explore Wonders | Tag: door | Wonderopolis

Wonderopolis

What Is an Airplane Boneyard?

Today’s Wonder of the Day takes you to a different sort of graveyard!

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What Is an Airplane Boneyard?
Why Can’t Metal Objects Go in the Microwave?

If you’re not careful with today’s Wonder of the Day, sparks could fly!

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Why Can’t Metal Objects Go in the Microwave?
Who Invented the Window?

We believe you’ll see right through today’s Wonder of the Day!

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Who Invented the Window?
How Are Buildings Built?

If you’re coming to Wonderopolis today, be sure to bring your tools!

#1722

How Are Buildings Built?
How Do Animals Communicate?

We expect today’s Wonder of the Day may really get you talking…and maybe to an entirely different species!

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How Do Animals Communicate?
How Can Dogs Hear Things We Can’t?

Have you ever wondered how dogs can hear things we can’t? Let’s find out what makes man’s best friend such a good listener.

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How Can Dogs Hear Things We Can’t?
How Do Automatic Doors Know When To Open?

Today’s Wonder of the Day opens with a “swoosh!”

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How Do Automatic Doors Know When To Open?
How Does a Doorbell Work?

Today’s Wonder of the Day might have you saying, “Who’s there?”

#954

How Does a Doorbell Work?
Why Are There Revolving Doors?

Today’s Wonder of the Day helps you go in and out by going around and around!

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Why Are There Revolving Doors?
Why Do You Say "Trick or Treat"?

Today’s Wonder of the Day is a real treat, and we promise that’s no trick!

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Why Do You Say "Trick or Treat"?