If moving charges create magnetic fields and all materials are made up of atoms that have moving charges, why are most things NOT magnetic?

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is

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

Yvette hangs a 2.4kg bird feeder in the middle of a rope tied between two trees. the feeder creates a tension of 480 n in each side of the the rope.