Find the volume of a box measuring 2cm by 7 cm by 3cm

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

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.