🦷 Up and Down with Science: Dentist's Chair & Pascal's Law
📖 Story: Visit to the Dentist
Ravi visited the dentist for a toothache. As he sat down, the chair slowly began to rise with a gentle hum. "Whoa! How did that happen?" he asked.
The dentist smiled and said, "This chair uses a **hydraulic lift**. It works on a science principle called Pascal’s Law. I press a pedal to apply pressure on a fluid. That pressure is passed equally to a wider area under your seat, lifting the chair up!”
Ravi was fascinated. Even at the dentist’s office, science was at work!
🔬 Understanding Pascal’s Law
- Pascal’s Law: Pressure applied to a fluid in a closed system is transmitted equally in all directions.
- Hydraulic machines (like dentist chairs, jacks, brakes) use this principle.
- Force applied on a small piston creates larger force on a bigger piston.
- Useful in lifting heavy loads with less effort.
🦷 Puzzle 1
Which law helps the dentist's chair go up and down?
🦷 Puzzle 2
Pascal’s Law is used in which type of machine?
🦷 Puzzle 3
In Pascal’s Law, pressure is transmitted through which medium?
🦷 Puzzle 4
The dentist presses a _______ to lift the chair.
🦷 Puzzle 5
What happens to the fluid when pressure is applied in a closed system?
🦷 Puzzle 6
True or False: A hydraulic lift uses air to lift the chair.
🦷 Puzzle 7
Pascal’s Law helps lift heavy objects using ________ effort.
🦷 Puzzle 8
Fill in the blank: Pressure = ______ / Area
🦷 Puzzle 9
Name any two machines that use Pascal’s Law.
🦷 Puzzle 10
Where is the force more: Small piston or Big piston?
