Buoyancy & Buoyant Force quiz Flashcards
Buoyancy & Buoyant Force quiz
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Why can some insects walk on water?
Some insects can walk on water due to surface tension, which is a result of cohesive forces between liquid molecules. This creates a 'skin' on the water's surface that can support the weight of small insects. Which process allows bugs to walk on water?
The process that allows bugs to walk on water is surface tension. The cohesive forces between water molecules create a surface film strong enough to support the weight of small insects. What causes a water strider to be able to walk on water?
A water strider can walk on water because of surface tension, which is the result of cohesive forces between water molecules that create a supportive surface film. Some tiny insects are able to walk on water. Why?
Tiny insects can walk on water due to surface tension, which is caused by the cohesive forces between water molecules that form a supportive surface layer. Which of the following statements best explains why ice floats on water?
Ice floats on water because it is less dense than liquid water. The structure of ice causes it to occupy more volume than the same mass of water, making it buoyant. Which statement best explains the reason some insects can walk across the surface of a lake?
Some insects can walk across the surface of a lake due to surface tension, which is the result of cohesive forces between water molecules that create a supportive surface film. How do water striding insects walk on the surface of water?
Water striding insects walk on the surface of water by utilizing surface tension, which is the cohesive force between water molecules that creates a supportive surface film. What is the buoyant force and how is it calculated according to Archimedes' principle?
The buoyant force is the upward force exerted by a fluid on a submerged object, calculated as the weight of the liquid displaced by the object, using the formula FB = ρ_liquid x g x V_under. How does the density of an object relative to a liquid determine whether it floats, sinks, or remains suspended?
An object floats if it is less dense than the liquid, sinks if it is denser, and remains suspended if its density is equal to that of the liquid. What is the shortcut formula for calculating the density of an object based on its submerged volume?
The density of an object can be calculated as the percent volume submerged multiplied by the density of the liquid.
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