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.

The water will become less dense and rise upward.

Explanation: Convection is a type of heat transfer which happens when there is a movement of fluid (liquid or gas) in which convection currents are produced due to the movement of hot fluid upwards and cold fluid downwards.

This happens as the density of hot fluid decreases on increase in temperature and thus it moves upwards and the cold fluid being more dense will move downwards.

the total distance traveled by the car is

30km + 49km = 79 km .