*Question*
Q: The primary role of leaves is to collect what? Choices: - pollen - insects - precipitation - sunlight A:
**Answer**
sunlight

*Question*
Q: Dependent on the frequency of sound waves, what term described how high or low a sound seems to a listener? Choices: - curve - wavelength - direction - pitch A:
**Answer**
pitch

*Question*
Q: If no conclusion is reached after an experiment, the scientist may retest what? Choices: - conclusion - materials - suggestions - hypothesis A:
**Answer**
hypothesis

*Question*
Q: Where was the distinction between total distance traveled and displacement first noted? Choices: - uncertainty principle - Newton's first law - string theory - one-dimensional kinematics A:
**Answer**
one-dimensional kinematics