1.  The answer can be found in a book, magazine, or the internet  A test or experiment is not needed to find the answer  “I wonder ______________ ?”

2.  How do plants grow?  Why are their craters on the moon?  What ingredients are in Coke?  What do mice like to eat?  What are the primary colors of light?  How is a soccer ball made?  Which animal runs the fastest?

3.  A test or experiment must be performed to find the answer  Is used to measure/find the relationship between two variables  The answer does not depend on an opinion  Requires the collection of data and observations

4.  How does the species of plant affect how fast it grows?  How does the speed of a mouse change with different types of treats at the end of a maze?  How does the mass of ball affect how fast it rolls down a hill?  How does walking speed affect how many calories are burned?