Understanding Super Hydrophobic Materials

Understanding Super Hydrophobic Materials

Assessment

Interactive Video

Science, Physics, Chemistry

7th - 12th Grade

Hard

Created by

Ethan Morris

FREE Resource

The video introduces Ultra Ever Dry, a super hydrophobic material that repels water by creating a microscopic barrier of air. It explains the concept of super hydrophobicity, which involves low surface energy and a high water droplet angle. A demonstration shows how Ultra Ever Dry prevents liquids from passing through a sifter, highlighting its water-repelling properties.

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9 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary feature of Ultra Ever Dry that makes it unique?

It creates a microscopic barrier of air.

It changes color when wet.

It absorbs water quickly.

It is biodegradable.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does Ultra Ever Dry keep objects dry even when submerged?

By repelling water with air pockets.

By creating a vacuum around the object.

By dissolving in water.

By absorbing the water.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the term 'super hydrophobic' mean in the context of Ultra Ever Dry?

It changes the color of water.

It creates a low surface energy.

It attracts water.

It creates a high surface energy.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What angle does a water droplet form on a super hydrophobic surface?

Less than 90°

Exactly 90°

Greater than 150°

Between 100° and 120°

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is demonstrated using a sifter in the video?

The sifter's color change when wet.

The sifter's durability.

Ultra Ever Dry's ability to prevent liquid passage.

The sifter's ability to filter water.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens when cola is poured onto a sifter coated with Ultra Ever Dry?

The cola is repelled and does not pass through.

The cola is absorbed by the sifter.

The cola passes through easily.

The sifter dissolves in the cola.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main benefit of using Ultra Ever Dry on surfaces?

It makes surfaces more colorful.

It enhances the surface's texture.

It increases the surface's weight.

It provides water resistance.

8.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the potential application of Ultra Ever Dry mentioned in the video?

Increasing plant growth.

Enhancing food flavor.

Creating waterproof clothing.

Improving water filtration systems.

9.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the significance of the air pockets created by Ultra Ever Dry?

They attract dust particles.

They increase the surface's temperature.

They repel fluids by preventing contact.

They change the surface's color.