Pressure Flashcards
How is pressure caused
When a force that presses or pushes against an object
Pressure increases when the force applied increases or when the area it is acting on decreases
Pressure is force per unit area (pressure = force •/• area
What’s the SI unit of pressure
Pascal (Pa) or (N/m2) Newton metre squared
Why does pressure in a fluid increase
Because of depth
Why does atmospheric pressure decrease
Because pressure above sea level increases due to height
What measures atmospheric pressure
A barometer
What can a barometer also do
Act as an altimeter measuring heights above sea level
What’s the normal atmospheric pressure measures
1013 hectopascals
What weather condition occur with high atmospheric pressure
Clear and dry
What weather condition occur with low atmospheric pressure
Windy, cloudy and wet
