An example of a grad-school level question?
A metal spoon was left in a pot of boiling soup. The cook burned a finger by touching the spoon. Why did the finger get burned?

An example of a grad-school level question?
Which of these is unique to the process of scientific investigation?

An example of a grad-school level question?
The tendency of a stationary object to resist being put into motion is known as

An example of a grad-school level question?
Which gravitational pull has the greatest influence on Earth's tides?