Question

a mid-ocean ridge
a continuous strike-slip fault
a chain of hot spots
correct, and it marks a divergent boundary where seafloor spreading is occurring.
identify features of the sea floor. 5 of 5
now look at the east-west running features that are separate from and extend away from the ridge system. what are they and what do they represent?
select all that apply, then click submit below
they mark the former transform faults that were part of the mid-ocean ridge system
they are normal faults.
they represent tensional stresses associated with seafloor spreading.
they are fracture zones.

Explanation:

1. Option 1 (They mark the former transform faults...): Mid - ocean ridge systems have transform faults associated with them. As the sea - floor spreads, these former transform faults can be seen as features extending away from the ridge. So this option is correct.
2. Option 2 (They are normal faults): At divergent boundaries (where sea - floor spreading occurs), the tensional stress leads to normal faults. Normal faults are formed when the crust is pulled apart, which is exactly what happens during sea - floor spreading. So this option is correct.
3. Option 3 (They represent tensional stresses...): Sea - floor spreading is a result of tensional stress in the Earth's crust at divergent boundaries. The features (faults) that form as the sea - floor spreads are a direct representation of these tensional stresses. So this option is correct.
4. Option 4 (They are fracture zones): Fracture zones are areas of weakness in the crust that can be related to the spreading of the sea - floor. They often mark the traces of former transform faults and are associated with the sea - floor spreading process. So this option is correct.

Answer:

1. They mark the former transform faults that were part of the mid - ocean ridge system
2. They are normal faults
3. They represent tensional stresses associated with seafloor spreading
4. They are fracture zones