Understanding How Vacuum Cleaners Work

The video explains how a vacuum cleaner works by comparing it to sipping through a straw. It details the components like the motor and fan, which create low air pressure to lift dust and dirt. The rotating brush helps loosen dirt, and the porous bag traps particles while allowing air to pass through, effectively cleaning the floor.

What is the basic principle behind how a vacuum cleaner works, as explained in the introduction?

• It uses heat to melt dirt.

• It creates a vacuum similar to sipping through a straw.

• It sprays water to clean surfaces.

• It uses magnets to attract dust.

What role does the motor play in a vacuum cleaner?

• It powers the fan to create low pressure.

• It sprays cleaning solution.

• It heats the air to dry the floor.

• It charges the vacuum cleaner.

How does the vacuum cleaner lift small particles of dust and dirt?

• By using water suction.

• By using a magnet.

• By creating a low-pressure area.

• By creating a high-pressure area.

What is the purpose of the rotating brush in a vacuum cleaner?

• To loosen trapped dirt.

• To polish the floor.

• To apply cleaning chemicals.

• To dry wet surfaces.

Why must the vacuum cleaner's bag be porous?

• To make the vacuum quieter.

• To allow air to pass through while trapping dirt.

• To let water escape.

• To increase the weight of the vacuum.