Water becomes more dense when it is colder and when it has more salt.  When ice melts into water it becomes less dense. or more dense?
less dense.


Increasing the number of resistors in a series circuit increases the overall resistance of the circuit.  Greta has 15 resistors in series on her circuit, while Evan has 2 similar resistors in series on his circuit. Whose circuit has the greatest resistance Greta or Evan?
Greta


Q: Bigger stars produce more energy, so their surfaces are hotter.  Would a big star be hotter or colder?
A: hotter


Question: People in the richer nations of the world use far more energy, especially energy from fossil fuels, than people in the poorer nations do.  Jan lives in a great country and she is rich. Compared to another person in a richer country, Jan will use an amount of energy that is greater or lesser?
Answer: lesser


*Question*
In erosion, a slower moving stream will only carry smaller particles.  A slow moving stream is capable of carrying larger or smaller particles than a fast moving stream?
**Answer**
smaller


(Question)
The size of an ocean wave depends on how fast, over how great a distance, and how long the wind blows. The greater each of these factors is, the bigger a wave will be.  John is relaxing at the beach watching the waves when the wind begins to pick up. When the wind begins to blow faster, what happens to the size of the waves increase or decrease?
(Answer)
increase