*Question*
The more extreme the amount of metamorphism, the more difficult it is to tell what the original rock was.  Evan is picking up rocks on the beach. Some rocks are very basic small ones, and others are large, clumpy stones with different textures. The rocks that are more difficult to identify had amounts of metamorphism that were more extreme or less extreme?
**Answer**
more extreme

*Question*
In refraction of light, the greater the change in speed, the more light bends.  Ron was playing with a flashlight. He moved it back and forth slowly, and then quickly. Which motion likely caused more light to bend the slow motion or the quick motion?
**Answer**
the quick motion

*Question*
The closer the field lines are drawn together, the stronger the field being described.  Jimbo was playing with magnetic field lines by manipulating them. If he moves the field lines closer together, what happens to the strength of the field increases or decreases?
**Answer**
increases

*Question*
Exhaling, or breathing out, decreases the size of the chest, which increases air pressure inside the lungs.  If Mary is running and race and begins to breathe hard, what happens to the air pressure in her lungs as she expands her chest increases or decreases?
**Answer**
decreases