Question

1. what happens to ocean water molecules when they become colder?

a. they spread apart
b. they move more rapidly
c. they pack together more tightly
d. they become less dense

1. in the rock cycle, what process transforms existing rocks through heat and pressure without melting?

a. sedimentary rock formation
b. igneous rock formation
c. metamorphic rock formation
d. weathering

1. which factor does not influence ocean water density?

a. temperature
b. salinity
c. pressure
d. wave height

Explanation:

• For question 28, as temperature decreases, water molecules slow down and pack more tightly.
• For question 29, metamorphic rock formation transforms existing rocks by heat and pressure without melting.
• For question 30, temperature, salinity, and pressure affect ocean - water density, while wave height does not.

Answer:

1. c. They pack together more tightly
2. c. Metamorphic rock formation
3. d. Wave height