How Paper Towels Absorb Water

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What is the primary material that paper towels are made of?

• Plastic polymers

• Metal alloys

• Cellulose fibers

• Synthetic rubber

Which two characteristics of cellulose are key to paper towel absorption?

• Its color and texture

• Its weight and density

• Its porous structure and sugar molecules

• Its strength and flexibility

When sugar molecules bond to water within a paper towel, what effect does this have on the towel's fibers?

• They become stronger

• They become waterproof

• They become weaker against ripping

• They become more rigid

What is the term for the process where water is drawn upwards into a paper towel because water molecules are more attracted to the towel's molecules than to each other?

• Osmosis

• Diffusion

• Capillary action

• Evaporation