What was the main mystery about washing machines that was not fully understood until 2018?
Scientists Just Figured Out How Washing Machines Work?!

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Science, Chemistry
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11th Grade - University
•
Hard
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How they dry clothes
How they spin clothes
How they use electricity
How they clean clothes
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary function of surfactants in cleaning clothes?
To dissolve water
To attach to dirt and remove it
To add fragrance
To dry the clothes
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the stagnant core problem in the context of washing machines?
The inability of water to reach all areas of the fabric
The machine not spinning fast enough
The detergent not dissolving
The clothes not drying properly
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What process helps remove dirt from intra-yarn pores during the rinse cycle?
Filtration
Condensation
Diffusio phoresis
Evaporation
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What did the researchers use instead of dirt in their experiments to study cleaning mechanisms?
Sand particles
Soap bubbles
Water droplets
Fluorescent balls
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of the rinse cycle in the washing process?
To add more soap
To remove soap and dirt
To dry the clothes
To add fragrance
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What potential future development could improve washing machine efficiency?
Longer wash cycles
More detergent use
Turbocharged washers
Slower rinse cycles
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