Which of these provides the best evidence for the plate tectonic theory? (5 points) the rise of magma by the convergence of Earth plates
the destruction of Earth's magnetic field by the rotation of Earth's core
the variations in the age of rocks at different distances from the midocean ridges
the difference in the shapes of the Atlantic Ridge and the coastlines of continents

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 8 options: the cold balloon expands and rises. the warm balloon shrinks and sinks. the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the warm balloon expands and rises. the cold balloon shrinks and sinks.