Problem: Randomly generate a fact.

Random fact: strumming a string can cause that string to vibrate

Problem: Randomly generate a fact.

Random fact: a pulley is used to lift a flag on a flagpole

Problem: Randomly generate a fact.

Random fact: An example of combining two substances is pouring one substance into the other substance

Problem: Randomly generate a fact.

Random fact:
wind and rain cause erosion