Describe the image created by a convex lens when the object is located between the focal point F and two times the focal point F. Use the lens and magnification equations to support your answer. Describe the properties of water as it is heated from ice, to liquid water, to a gas. Be sure to include the terms density, mass, volume, and expand. Use the quantities constant, low, medium, and high to describe the terms.

A porous object, like a sponge, is tossed into a liquid. At first the object floats on the liquid, but later sinks into the liquid. Explain how this is possible using Archimedes principle and use the terms density, buoyant force, and force of gravity.