Rumble-rumble! FormaTerra is watching a toy volcano erupt with bubbly red juice! She knows our Earth is full of amazing shapes like tall mountains, deep valleys, and fiery volcanoes. A) The Story of the Mountain That Grew and Grew. B) You are an explorer looking for a secret cave. Would you search in a flat, grassy field or on a rocky mountain? C) Let's use our hands to make a tall, pointy mountain!