At Spalding Nix Fine Art, “Echoes” (through May 9) is a collection of solo exhibitions presenting Caroline Bullock, Sachi Rome, Blair Hobbs and Lizzy Storm, with each artist, according to the ...

Since wood is less dense than water, wood floats in water, no matter how big or small the piece of wood is. 5. Show photos to explain how the density of an object can be changed. The key to floating ...