Understanding Hair Ice and Water Cohesion

The video follows a nature walk discovery of hair-like ice on a tree branch. The ice is identified as a rare form of ice that melts due to water's cohesive properties. The video explains how cohesion causes water molecules to stick together, forming ice structures. It further explores how hair ice forms on tree branches due to water freezing in small tubes, expanding and creating ice strands. The video concludes with a discussion on other ice formations like ice needles and frost flowers.

What unusual phenomenon did the narrator and Squeaks discover during their nature walk?

• A tree branch with hair-like ice

• A bird with colorful feathers

• A rock that glows in the dark

• A flower that changes color

What property of water is responsible for the formation of the rare ice?

• Temperature

• Color

• Stickiness

• Density

What term do scientists use to describe the stickiness of water?

• Cohesion

• Fusion

• Diffusion

• Adhesion

How does cohesion contribute to the formation of hair ice?

• By allowing water to stick to tree branches

• By making water evaporate quickly

• By changing the color of the ice

• By pulling water through tiny holes in the branch

What happens to water when it starts to freeze?

• It evaporates

• It expands

• It changes color

• It shrinks

Why does the ice move to the outside of the branch?

• Because it is lighter than water

• Because it is attracted to sunlight

• Because it is pushed by the wind

• Because it needs more space

What would happen if the water from the melted hair ice was frozen again?

• It would turn into snow

• It would form hair ice again

• It would form regular ice

• It would evaporate

What are ice needles?

• Ice formations that are round

• Ice formations that look like flowers

• Ice formations in the shape of needles

• Ice formations that are flat

What are frost flowers?

• Ice formations that look like flowers

• Ice formations that look like needles

• Ice formations that are round

• Ice formations that are flat

What role does cohesion play in the formation of ice needles and frost flowers?

• It prevents ice from forming

• It makes the ice melt faster

• It helps ice form in specific shapes

• It changes the color of the ice