Cohesion and Adhesion in Water

The video tutorial covers a fifth-grade science class activity where students explore water properties such as cohesion, adhesion, and surface tension. The class takes place outdoors at a stream, where students observe these properties in nature. Examples include insects using surface tension, water droplets adhering to leaves, and water droplets joining together through cohesion.

What was the main purpose of the class trip to Spout Run?

• To collect insects for a biology project

• To practice swimming in the stream

• To explore water properties in a natural setting

• To have a picnic by the stream

Which of the following is an example of surface tension?

• Water flowing down a hill

• Insects walking on water

• Water droplets forming on a leaf

• A puddle forming after rain

What natural phenomenon did the students observe to understand surface tension?

• Insects running across the water

• Water flowing over rocks

• Leaves floating on water

• Water droplets on a spider web

What did the students look for to identify adhesion?

• Water droplets clinging to leaves or grass

• Insects walking on water

• Water flowing in a stream

• Water evaporating from a surface

How is adhesion different from cohesion?

• Adhesion is water boiling, while cohesion is water condensing

• Adhesion involves water sticking to other materials, while cohesion involves water sticking to itself

• Adhesion is the process of water evaporating, while cohesion is water freezing

• Adhesion is water flowing, while cohesion is water standing still

Which example illustrates adhesion?

• Insects walking on water

• Water droplets clinging to a blade of grass

• Water flowing down a stream

• Water droplets merging to form a puddle

Which of the following best describes cohesion?

• Water droplets merging to form a larger droplet

• Water droplets sticking to a spider web

• Insects using water to move

• Water evaporating into the air

What did the students use to identify cohesion in nature?

• Noticing water evaporate from a surface

• Watching insects walk on water

• Observing water droplets merging on a leaf

• Seeing water droplets cling to grass

What did the students observe to understand cohesion?

• Water droplets clinging to a leaf

• Insects using water to move

• Water droplets merging to form a larger droplet

• Water evaporating from a surface