Explore Wonders | Subcategory: physical-science

When Is Sand not a Solid?

Today’s Wonder goes with the flow . . . sometimes!

#2906

When Is Sand not a Solid?

What Makes Ink Permanent?

Today’s Wonder of the Day isn’t written in stone, but we think it will stick around for quite a while!

#327

What Makes Ink Permanent?

Why Doesn't Glue Stick To the Inside Of the Bottle?

If you ever find yourself in a sticky situation, today’s Wonder of the Day could be very helpful. Join us as we let the genie — ummm, glue — out of the bottle!

#315

Why Doesn't Glue Stick To the Inside Of the Bottle?

How Can a Voice Break Glass?

Make sure you join us today for the last day of Camp What-A-Wonder! We’re having a talent show!

#312

How Can a Voice Break Glass?

How Does an Eraser Work?

Make sure you check out today’s Wonder of the Day before it’s gone!

#309

How Does an Eraser Work?

How Do Mirrors Work?

Today’s Wonder of the Day offers a chance to sit back and reflect for a bit. Won’t you join us?

#300

How Do Mirrors Work?

How Fast Is a Fastball?

Today’s Wonder of the Day packs some serious heat. Batter up!

#289

How Fast Is a Fastball?

Why Is the Grass Wet In the Morning?

Will you come visit us in Wonderopolis today? We hope you dew!

#279

Why Is the Grass Wet In the Morning?

Does Matter Really Matter?

Does it matter to us whether you visit Wonderopolis today? You bet it does!

#276

Does Matter Really Matter?

Why Do Airplanes Leave Tracks In the Sky?

What’s that? Up there in the sky! It looks a bit like a cloud. Find out more today in Wonderopolis!

#265

Why Do Airplanes Leave Tracks In the Sky?

Is Dry Ice Really Dry?

Today’s Wonder of the Day is really cool. We mean it! Really, really cool. We swear!

#255

Is Dry Ice Really Dry?

Can You Really Cook an Egg on the Sidewalk?

Don’t be a chicken! Join us in Wonderopolis today for a steaming-hot Wonder of the Day sure to crack you up!

#243

Can You Really Cook an Egg on the Sidewalk?

What Is a Dust Bunny?

Hop on over to Wonderopolis today for a Wonder of the Day that will sweep you off your feet!

#219

What Is a Dust Bunny?

What Makes Sounds Louder?

Listen up, wonder friends! Today we’re turning up the volume in Wonderopolis and riding the wave. The sound wave, that is.

#161

What Makes Sounds Louder?

How Do You Tap a Maple Tree?

What’s tall, leafy and syrupy sweet? Today’s Wonder of the Day, of course! Grab a bucket. It’s time to see what’s on tap in Wonderopolis.

#159

How Do You Tap a Maple Tree?

Why Do Spiders Spin Webs?

Today we’re spinning a web-tacular wonder with the help of a natural-born eight-legged construction worker.

#120

Why Do Spiders Spin Webs?

How Does Super Glue® Work?

Stick with Wonderopolis, and we’ll teach you all kinds of neat things!

#119

How Does Super Glue® Work?

Why Do Rainbows Appear?

What do rainclouds and Roy G. Biv have in common? Swing by Wonderopolis today to meet this WONDERfully colorful fellow and find out.

#116

Why Do Rainbows Appear?

How Do Roller Skates Work?

Today’s Wonder of the Day will have you rockin’ and rollin’ on four wheels!

#105

How Do Roller Skates Work?

Why Is Sand or Salt Put On Roads When It Snows?

You may want to take today’s Wonder of the Day with a grain of salt. It won’t break the ice, but it will melt it!

#103

Why Is Sand or Salt Put On Roads When It Snows?

Explore the World of Wonders

When Is Sand not a Solid?

What Makes Ink Permanent?

Why Doesn't Glue Stick To the Inside Of the Bottle?

How Can a Voice Break Glass?

How Does an Eraser Work?

How Do Mirrors Work?

How Fast Is a Fastball?

Why Is the Grass Wet In the Morning?

Does Matter Really Matter?

Why Do Airplanes Leave Tracks In the Sky?

Is Dry Ice Really Dry?

Can You Really Cook an Egg on the Sidewalk?

What Is a Dust Bunny?

What Makes Sounds Louder?

How Do You Tap a Maple Tree?

Why Do Spiders Spin Webs?

How Does Super Glue® Work?

Why Do Rainbows Appear?

How Do Roller Skates Work?

Why Is Sand or Salt Put On Roads When It Snows?

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