The higher the crests of a wave are, the greater the amplitude. Ian surfed a 6 foot wave. Tony surfed a 10 foot wave. The wave with the highest amplitude was Tony's or Ian's?
Tony's

The stratosphere contains the ozone layer, the temperatures increase as altitude increases. Dean is coming from space, and passes through the stratosphere. He looks at the temperature around him as he does, and he sees that as he heads toward the ground, the temperature increases or decreases?
decreases

Q: The more efficient a device is, the greater the percentage of usable energy it produces. When a device become less efficient, its production of usable energy will go up or down?
A: down

Question: The higher up a food chain that humans eat, the greater the levels of toxic metals they take in. Mike is studying what humans eat. Bears are higher up the food chain than mosquitoes. Therefore, if humans were to eat bears, they would likely be taking in less or more levels of toxic metals?
Answer: more

*Question*
As more resistors are added in series, the total resistance of the circuit increases. If Mona is building a circuit and she adds less resistors in series, what happens to the total resistance of the circuit increases or decreases?
**Answer**
decreases

*Question*
At higher concentrations, particles of reactants are crowded closer together, so they are more likely to collide and react. If Mona is filling a balloon with helium and she adds more gas to it, what happens to the likelihood that the helium particles will collide with each other more likely or less likely?
**Answer**
more likely