Density of an object is usually compared to the density of water. If it is more dense it sinks, if it is less dense it will float.

Amount of liquid measured in l or lm

Amap that uses a range of colors and shading to represent the elevation, depth, or landscape of specific features on earth is a/an map.

Calculate the energy required to ionize a hydrogen atom to an excited state where the electron is initially in the n = 5 energy level. report your answer in kilojoules