Applications based Pressure

Concept Recap

Applications of Pressure:

• A sharp knife cuts better because it exerts greater pressure over a small area.
• Elephants have broad feet to reduce pressure and prevent sinking into soft ground.
• Girls wearing high heels exert more pressure compared to flat shoes due to less area.
• Block heels reduce pressure compared to pointed heels because of a larger area of contact.
• A sharp pin can easily pierce surfaces because it applies a high pressure over a tiny area.

1. A sharp knife cuts objects better because:

It is made of metal It exerts more pressure on a small area It is heavy It looks sharp

2. Why does an elephant not sink into soft ground?

It walks slowly It weighs less It has broad feet reducing pressure It has strong legs

3. Who exerts more pressure on the ground?

A girl wearing block heels A girl wearing pointed heels A girl wearing flat shoes A barefoot girl

4. Broad shoes are better on soft ground because:

They look stylish They reduce pressure by increasing area They increase weight They help to run faster

5. A pin easily pierces a surface because:

It is long It is heavy It applies large force on a very small area It is magnetic

6. Which footwear exerts less pressure?

Flat shoes Pointed heels Sharp sandals Metal shoes

7. If the area of contact increases, the pressure:

Increases Decreases Remains the same Doubles

8. Why do laborers use broad belts to carry loads?

For style To carry heavier loads To reduce pressure on the body To increase pressure

9. A heavy truck has broad tyres because:

To increase speed To reduce pressure on the road To reduce weight To make driving easy

10. Less pressure can be achieved by:

Decreasing area Increasing force Increasing area Reducing mass