Physical science :forces in fluids Section 1

any material that takes the shape of its container is...

• pressure

• gravity

• fluid

• none of the above

___________________ fluids exert pressure

• none

• some

• most

• all

Pressure is....

• the result of force distributed over an area.

• force/ area

• if an object is touching another object

• all of the above

• none of the above

What is the units used for pressure ?

• Meter

• pascal

• Newton

• Liter

What is the formula for pressure ?

• gravity/ force

• area / force

• Length x width

• force / area

If the air inside a balloon exerts a force of 0.5 N on an area of 2.5 m^2. What is the pressure inside the balloon?

• 2.0 pascals

• 1.5 pascals

• 0.002 pascals

• 0.2 pascals

If a crate has a force of 2,000 N with an area of 1.5 m^2. What is the force?

• Both A and B

• 133 Pascals

• 1,333.3 Pascals

• 1.33 KP

• Both C and D

Air pressure ____________ as altitude increases.

• stays the same

• decreases

• increases

• is not affected

Water pressure _________________ as depth increases.

• stays the same

• decreases

• increases

• is not affected

Why are bubbles round?

• water pressure increases as depth increases.

• The pressure at one depth is constant.

• The pressure is exerted equally in all directions.

• all of the above