What is the difference between MKS system and SI system of measurement​

Write a question about how changing temperature affects the gas inside the sports ball

Which best describes how fluids change as they travel through different portions of the convection currents? they change to solids at the outer portion of the convection currents. they change to solids at the inner portion of the convection currents. they become more dense at the outer portion of the convection currents. they become more dense at the inner portion of the convection currents

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain