Place the descriptions in the correct categories.
rift valleys
At Convergent Boundaries
At Divergent Boundaries
plates pulling apart
magma breaks through crust
subduction
volcanic mountains
island arc
magma flows from cracks
mid-ocean ridges

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?

In order of decreasing light-transmitting capabilities of materials, which is the correct sequence? a. transparent -> translucent -> opaque b. opaque -> transparent -> translucent c. opaque -> translucent -> transparent d. translucent -> transparent -> opaque