An example of a grad-school level question?
Stacey picks apples and puts them in a basket. When she puts her basket on a scale, the scale reads two kilograms (kg). What property is Stacey measuring?

An example of a grad-school level question?
Noah visited a park that had many oak trees. Which best describes the role of an oak tree in its ecosystem?

An example of a grad-school level question?
Which of the following is a mineral?

An example of a grad-school level question?
The Milky Way Galaxy is visible as a bright region in the night sky. Modern telescopic observation has made it possible to discover that the brightness of the Milky Way Galaxy is due primarily to which structure?