In an area of the deep ocean, hot magma emerges from a crack in Earth’s crust. Which statement describes what will happen to the seawater above the crack as a result of convection? Water molecules will break apart and flow in a circular pattern.
Water molecules will bond together and rise upward.
The water will become more dense and sink downward.
The water will become less dense and rise upward.

D

Explanation:

Hot magma erupts from a crack in Earth’s crust with a very high temperature that will surely break the bond of water molecules in contact. As a result of this, The water molecules will become less dense and rise upward.

Therefore, "The water will become less dense and rise upward " is the best statement to describes what will happen to the seawater above the crack as a result of convection.

A Scientific method is way to investigate observations and answer questions. A hypothesis is formed and there after steps are taken to test the hypothesis and draw conclusion.

The steps of the scientific method are:

State a hypothesis.Identify the relationship  to be tested.Decide on the dependent  and independent variables.Identify and eliminate any  confounding variables.Test the hypothesis  with an investigation.Analyze the data.Come to a conclusion  based on the data.