Answer:
1) Which features do most stratovolcanoes and cinder cone volcanoes have in common? *steep sides and violent eruptions*
2) Geologists observed signs of widespread ancient glaciers from the same time period in areas across South America, Africa, Antarctica, India, and Australia. What theory did this observation support? *Those continents were once together as one supercontinent.*
3) Ocean trenches form over millions or billions of years. Which statement accurately describes how ocean trenches form? *a plate of oceanic crust is subducted under a plate of continental crust*
4) Iron particles in basalt on the ocean floor tell scientists *the direction of the magnetic field*.In two adjacent magnetic stripes, the iron particles show *different* alignments.
5) Why is no land created or destroyed at transform boundaries? *because the plates only slip past each other at these boundaries*
6) In trying to prove continental drift, Alfred Wegener used evidence from long ago to show that in the distant past, similar animal species lived in places that are *separated by great distances* today. For example, fossils of the *Lystrosaurus* were found in India, Africa, and Antarctica.
7) Which statement identifies a major reason for the subduction that helps to form volcanoes? *the difference in density of oceanic and continental plates*
8) Along which features does seafloor spreading occur? *mid-ocean ridges*
*Answers*