Is it waterproof

The video tutorial explores the concept of waterproofing by conducting experiments with different materials such as cardboard, tissue paper, and plastic. The tests involve spraying water to see if it penetrates the material or stays on top, indicating whether the material is waterproof. The tutorial concludes with a summary of the findings, highlighting which materials are waterproof and which are not.

What is the purpose of using a sprayer in the initial waterproof test?

• To dry the material

• To add color to the material

• To clean the material

• To check if water passes through the material

What indicates that the material is not waterproof in the initial test?

• Water changes color

• Water evaporates quickly

• Water passes through to the cardboard

• Water stays on top

In the alternative testing method, what is used to test waterproofing?

• Glass

• Metal plate

• Tissue paper

• Plastic sheet

What is observed to determine if the plastic is waterproof?

• If the plastic melts

• If the water evaporates

• If the water stays on top

• If the plastic changes color

What conclusion is drawn about the plastic's waterproof property?

• It changes shape

• It is not waterproof

• It absorbs water

• It is waterproof