Fill a glass with water. Cover the glass with paper. Turn the glass upside down. The water stays in the glass. 1. The outside air pressure is greater than the inside air pressure.
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This is about a simple science experiment.
Q1) Why is 'the' used in 'the outside air pressure' or 'the inside air pressure'? Is this noun phrase in generic use?
Q2) Do we have to stress the first syllabe or the second syllable in 'outside' or 'inside'? Are both ways okay?
Q3)What other adjectives can we use instead of 'greater'?
1 answer
We use "the" to specify a particular situation. It may be the normal or usual situation, but may vary under other conditions. We stress the first syllable in outside and inside to stress the difference between in and out. And I can't think of a better adjective than "greater", but someone else might.