An example of a grad-school level question?
An element with which property would be best to use in electrical wiring?

An example of a grad-school level question?
Jennifer has collected rocks while hiking. As she attempts to classify her rocks, which will she put in the pile of sedimentary rocks?

An example of a grad-school level question?
One key physical process in beach formation is wave action. Sand is deposited on beaches as waves break onto the shoreline and the energy from the wave scatters. Which type of energy is most used by wave action to modify the shape of the beaches?

An example of a grad-school level question?
Which species have been on the Earth for the shortest amount of time?