Question

choose the statement below that describes the relationship between temperature and viscosity.
as temperature increases, viscosity decreases.
as temperature decreases, viscosity decreases
as temperature increases, viscosity increases.
there is no relationship between temperature and viscosity
08 multiple choice
if an object floats, how do the weight values of the object and water compare?
the weight of the displaced water must be less than the object.
the weight of the displaced water must be equal to the object.
the weight of the object must be more than the water.

Explanation:

Step1: Analyze temperature-viscosity link

For most fluids (liquids, which are the common context for this basic question), higher temperature increases molecular kinetic energy, weakening intermolecular forces that create resistance to flow (viscosity). So viscosity falls as temperature rises.

Step2: Apply Archimedes' Principle

When an object floats, it is in static equilibrium. Archimedes' principle states the buoyant force (equal to the weight of displaced water) balances the object's weight, so these two weights are equal.

Answer:

1. As temperature increases, viscosity decreases.
2. The weight of the displaced water must be equal to the object.