How do conduction and convection differ? (4 points) Conduction can move through empty space to transfer heat; convection cannot.

Conduction does not require objects to have direct physical contact; convection does.

Conduction requires objects to have direct physical contact; convection does not.

Conduction transmits heat through electromagnetic waves; convection does not. PLS HELP

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled

How do temperature and salinity affect deepwater currents? as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them.

Avolleyball player hit a ball with a mass of 0.25 kg. the average acceleration of the ball is 15.5 m/s². how much force did the volleyball player apply to the ball? 62.0 n 3.87 n 62.0 m/s² 3.87 m/s²