LR Pressure and density quiz

Pressure increases when the surface area over which a force is applied increases.

• True
• False

Pressure decreases when the surface area over which a force is applied increases

• True
• False

What is the equation used to calculate density?

• density=volume/mass
• density=force/area
• density=mass/volume
• density=force/volume

What is the unit of measurement for density?

• pascals
• metres

• grams
• grams per cubic centimetre (g/cm3)

Which of these is a correct formula?

• $pressure\ =force\times area$

• $area=force\times pressure$

• $force=\frac{pressure}{area}$

• $pressure=\frac{force}{area}$

Which of these is a correct formula?

• $Density=Mass\times Volume$

• $Mass=\frac{Volume}{Density}$

• $Volume=Mass\times Density$

• $Volume=\frac{Mass}{Density}$

Frank has a paper clip. It has a mass of 90g and a volume of 30cm³. What is its density?

• 3 g/cm³
• 1/3 g/cm³
• 27 g/cm³
• 39 g/cm³

Jack has a rock. The rock has a mass of 14g and a volume of 2cm³. What is the density of the rock?

• 7 ml

• 7 g/cm³
• 28 g/cm³
• 1/7 g/cm³

What pressure does a 4000N horse exert on the ground if each foot has an area of 10cm²?

• 40 N/cm²

• 100 N/cm²

• 400 N/cm²

• 10 N/cm²

Find the pressure exerted when a box is placed on a table and exerts a force of 124 newtons on an area of 10.5cm²

• 11.81 N/cm²

• 0.085 N/cm²

• 1.18 N/cm²

• 0.85 N/cm²