*Question*
Q: From the pharynx, air next passes through what structure, also known as the voice box because it contains vocal cords? Choices: - diaphram - trachea - pancreas - larynx A:
**Answer**
larynx

*Question*
Q: When light passes from one medium to another, it changes what? Choices: - color - temperature - density - speed A:
**Answer**
speed

*Question*
Q: When a wave travels down a string, the string vibrates up and down at right angles to the wave's what? Choices: - frequency - pressure - gravity - direction A:
**Answer**
direction

*Question*
Q: Where are all hormones secreted into before entering the circulatory system? Choices: - Amniotic fluid - blood stream - Cerebrospinal fluid - interstitial fluid A:
**Answer**
interstitial fluid