What happens to the pointer on the triple beam balance

Riders - The riders are the sliding pointers placed on top of the balance beams to indicate the mass in grams on the pan and beam. Zero adjustment knob - This is used to manually adjust the triple beam balance to the 'zero' mark (check to ensure that the pointer is at zero before use).

Explanation:

Hope this helps yah:)

the cold front replaces the warmer air at the ground level changing the wind to be breezy and denser.there is also an immediate drop in the temperature.