Summative Test (Midterm)

Pick among the choices which are fluid.

• Water

• Sand

• Helium

• Wastewater

• Cement

All the statements below are true except one.

• Atoms in liquid are closer than the atoms in gas.

• The density for sea water is 1.025 Kg/m³

• Solid, liquid and gas are the three common phases of matter

• Liquids and gases are examples of fluid.

1 Pascal is equivalent to?

• 1 kg m/s

• 1 N/m²

• 1 N/m^-2

• 1 kg m/s²

It is defined as the force per unit area

• Density

• Fluidity

• Pressure

• Buoyancy

It is the mass of a unit volume of a material or substance

• Density

• Fluidity

• Pressure

• Buoyancy

An object under water ________ its pressure as it goes deeper.

• doesn't change

• maintain

• decreases

• increases

If an object remains suspended at that depth, it means that?

• The buoyant force is greater than the object's weight

• The buoyant force is less than the object's weight

• The buoyant force is equal to the object's weight

• None of the above

He is the proponent of the principle of buoyancy

• Aristotle

• Archimedes

• Descartes

• Pythagoras

It is the upward force acting upon an object that is partially of wholly submerged in a fluid.

• Specific gravity

• Surface Tension

• Capillarity

• Buoyancy

When there is a greater upward force acting to an object that is submerged in water, the object has the tendency to?

• Float because the object is less dense than water

• Float because the gravity exerted on the object is greater than the upward force

• Float because the object is denser than water

• Float because the upward force is lesser