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(01.01 MC) A scientist is investigating the effects of salinity on fish development in the Atlantic Ocean. He places fertilized fish eggs in an aquarium that contains lower salinity than typical Atlantic Ocean water. He observes that the fertilized eggs fail to develop. He concludes that fish eggs do not develop in conditions with low salinity. Why is this an invalid conclusion? (3 points)

(03.03 LC) Which type of wave cannot move without a medium in which to travel? (3 points)

(01.04 MC) Sascha notices that water droplets on her car window sometimes join together to form a larger drop. What property of water is Sascha observing? (3 points)

(01.03 MC) Most species of fish require dissolved oxygen for their metabolism. Why would these species tend to be found in shallow ocean zones? (3 points)

(03.03 MC) The diagram below shows two waves. At which letter (A-D) on the diagram is constructive interference going to occur? (3 points) © 2016 Northwestern University Weinberg College of Arts & Sciences

(02.01 LC) What does the theory of plate tectonics state about the Earth? (3 points)

(01.01 LC) What does a sound scientific conclusion most likely rely upon? (3 points)

(01.02 MC) A deep sea robot is sent to the bottom of the ocean. What will it most likely observe, in terms of the numbers of photosynthetic organisms and light conditions? (3 points)

(02.02 MC) When the Earth’s continental crust and ocean crust formed, they were different densities. Why did they differ in density and how did this affect their formation? (3 points)

(01.04 LC) What property of water allows fish to survive in a lake that is frozen over? (3 points)