Question

Which of the following is not affected by pressure difference?

• A. Blowing of winds.
• B. A vacuum cleaner used for cleaning.
• C. The motion of the Earth around the Sun.
• D. Drinking a soft drink through a straw.

Answer 1

The correct option is C The motion of the Earth around the Sun.

The motion of the Earth around the Sun is not affected by pressure difference.
Whereas winds are caused due to the air pressure difference.
Vacuum cleaner has a fan inside that creates low pressure and helps to suck all dust.
Drinking soft drink through a straw is also possible due to the pressure difference. We suck the air present in the straw and create a region of low pressure. Soft drink flows from a region of high pressure to low pressure which is already created in the straw.