What are objects?
Definition: An object is a software bundle of variables and related methods. You can represent real-world objects using software objects. Everything that the software object knows (state) and can do (behavior) is expressed by the variables and methods within that object.
Will a styro cup float on water?
Styrofoam is insoluble in water and is of very low density, so it will float on the surface of water.
Why does a plastic cup get crushed in deep water?
How it works. Styrofoam cups are made of beads from a type of plastic called polystyrene, and the beads are puffed up with air. During descents into the ocean, the accumulated weight of water increases and pressure builds up — about 14.7 pounds per square inch for every 33 feet (10 meters) of depth.
Does Aluminium sink or float water?
The aluminum foil is denser than air and water. So flat or ball shaped aluminum will sink in water, unless there is air trapped in the ball.
What happens if you place aluminum in water?
In what way and in what form does aluminum react with water? Aluminum metal rapidly develops a thin layer of aluminum oxide of a few millimeters that prevents the metal from reacting with water. When this layer is corroded a reaction develops, releasing highly flammable hydrogen gas.
Does crumpled aluminum foil float?
Your foil ball, crumpled into a tight clump, has more density because its pennies are crowded into a smaller space than those in the foil boat. Things float when they have less density than water, but sink when they have more.
Will 1 gram of aluminum float in water?
Water has a density of 1 gram/milliliters and a solid piece of Aluminum has a density of 2.7 gr/ml. If the density of an object is lower than 1 or that of water, then it will float.
Why does an aluminum foil ball float?
The density of aluminum is 2.7 g/ml. The density of water is 1 g/ml the air trapped in the ball and the foil boat makes the density of the metal boat less that 1 g/ml. so the boat and ball floats. When you remove the air from the foil ball the density of the foil becomes more that 1 g/ml so the foil now sinks.