Why does rain slowly eat away a limestone statue?

What Crafty Clover says in this video

Intro

Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. Why does rain slowly eat away a limestone statue?

The Big Idea

Old stone statues often look worn and blurry. Rain did that! But how?

Calcite Stone

Step one: Calcite Stone. Limestone and marble are made of calcite crystals. Rain is slightly acidic, because it picks up carbon dioxide from the air, and polluted rain is even more acidic.

Dissolving

Step two: Dissolving. The acid slowly dissolves calcite, so sharp carved details turn soft and blurry over many years. Some stone also gets a crusty layer of new gypsum crystals.

Protecting

Step three: Protecting. Caretakers clean old statues gently. Sometimes they cover them to protect them from the rain.

A Closer Look

Let's take a closer look! Rain falls. It's slightly acidic. Calcite dissolves. Details blur.

Quick Facts

Quick facts! Old gravestones made of limestone or marble often have letters that have faded. Rain is slightly acidic. Takes many years. Caretakers clean gently.

Think Like a Scientist

Now, think like a scientist! With a grown-up, look at old stone buildings or gravestones. Find carved letters that have blurred. Draw one. Guess how long the rain has been working. Compare it to newer stone.

Outro

Limestone and marble statues are made of calcite crystals. Rain is slightly acidic, so it slowly dissolves calcite, blurring carved details over many years. Caretakers clean and sometimes cover statues to protect them. Science is amazing! The world is full of surprises. Keep asking big questions, and keep exploring with me! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!