The size of the eroded particles depends on the velocity of the water. Eventually, the water deposits the materials. As water slows, larger particles are deposited. As the water slows even more, smaller particles are deposited.  Wendy turned the hose from full blast to half power. This makes the stream more or less likely to be able to deposit large rock particles?
less

The older a person is, the greater their chance of developing a cardiovascular disease.  What happens to John's risk of contracting a disease as he gets older it decreases or it increase?
it increase

The more current, the stronger the electromagnet.  John started measuring the current, and notices that as the current got weaker the electromagnet became Weaker or Stronger?
Weaker