66thth and 7 and 7thth Grade Stuff YOU Grade Stuff YOU Should Know! Should Know!

If a ball is sitting at the top of a hill, that ball If a ball is sitting at the top of a hill, that ball has has potential energypotential energy. Once the ball is . Once the ball is rolling down that hill, the energy changes rolling down that hill, the energy changes from potential to from potential to kinetic energykinetic energy..

An earthquake may produce a tsunami, a An earthquake may produce a tsunami, a powerful wave that can travel for hundreds powerful wave that can travel for hundreds of miles at very fast speeds and produce a of miles at very fast speeds and produce a great deal of damage on the shoreline.great deal of damage on the shoreline.

Another name for mountains being formed Another name for mountains being formed by folding is by folding is compressioncompression..

Density = mass x volumeDensity = mass x volume. The formula for . The formula for finding the volume of a rectangular prism finding the volume of a rectangular prism is height x width x base. A graduated is height x width x base. A graduated cylinder may be used to find the volume of cylinder may be used to find the volume of an irregular object.an irregular object.