Why Does Pahoehoe Lava Look Ropy?

What Crafty Clover says in this video

Intro

Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. Why does pahoehoe lava look ropy?

The Big Idea

Pahoehoe is a Hawaiian word for smooth, ropy lava. Its surface wrinkles into twisted ropes while the lava underneath keeps moving. It is like a hot, runny river wearing a thin skin, a bit like warm pudding.

Thin Skin

Step one: a thin skin. Runny lava touches the air, and its top cools into a thin, bendy skin. Underneath, the lava is still very hot and still moving, glowing like an orange river.

Drag and Wrinkle

Step two: drag and wrinkle. The lava underneath keeps flowing and drags the skin along, like a rug pulled across a floor. The skin bunches up into folds and coils that look like twisted rope.

Smooth Ground

Step three: it hardens. When the lava cools, the ropy skin stays forever as hard black rock. Pahoehoe flows can travel far and leave smooth, wavy ground.

A Closer Look

Let's take a closer look! Under the skin, lava is still glowing hot. The skin on top is thin and bendy. The flowing lava drags the skin along. The skin wrinkles into a rope pattern, and it hardens that way.

Quick Facts

Quick facts! Try saying it: pah-HOY-hoy! It comes from the Hawaiian language, where many volcanoes erupt. Pahoehoe is made from hot, runny lava. Another kind of lava, called aa, is rough and spiky.

Think Like a Scientist

Now, think like a scientist! Let a bowl of pudding sit until a skin forms. Slide a spoon gently under the skin and push. Watch it wrinkle into folds. That is how pahoehoe gets its ropes!

Outro

Pahoehoe looks ropy because moving lava wrinkles its thin skin. Science is amazing! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!