3.5 Pressure between Solids

Look at the image, what causes the pressure on the clay when using a knife?

• The force used to push down on the clay

• The sharpness of the knife

• The weight of the knife

• The area of the knife's surface

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NGSS.MS-PS2-1

To increase the pushing effect of the force when cutting the clay, you should:

Select all that applies

• Increase the force on the knife

• Use a duller knife

• Decrease the surface area of the knife

• Use less force

The equation linking pressure, force, and area is:

• Pressure = Force/Area

• Force = Pressure * Area

• Area = Force/Pressure

• All of the above

The unit of force is:

• Newtons

• Pascals

• Meters squared

• Newtons per meters squared

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS2-4

NGSS.MS-PS2-5

The unit of pressure is:

• Newtons

• Pascals

• Meters squared

• Newtons per meters squared

If the area is measured in cm², the unit of pressure would be:

• N/cm²

• N/m²

• Pa

• Both a and c

According to the image, what increases the pressure when using a sharper knife?

• The force on the knife

• The surface area of the knife

• The sharpness of the knife

• Both a and c

In the image of the woman on the nail bed, each nail has a sharp point. This means the pressure from:

• Each nail is very large

• The weight of the woman is spread over many nails

• The weight of the woman is concentrated on a small area

• Both a and c

One end of the pin has a sharp point. This means the pressure on that end is:

• Smaller

• Larger

• The same

• Cannot be determined

The other end of the pin has a larger surface area. This means the pressure on that end is:

• Smaller

• Larger

• The same

• Cannot be determined