12. In an arid climate which of the following rocks would form a cliff if eroded by a stream: a) shale e) c) and d) b) evaporate c) sandstone d) limestone 13. When would you expect the a) hottest week of summer b) the wettest week of spring 14. Cross bedding in sandstone a) sand deposition by glaciers b) sand deposition in a current most falling debris on mountain roads in the Colorado? c) coldest week of winter d) the week you drive through the mountains indicates: c) sand deposition in a swamp d) rapid sand deposition 15. Mud-cracks in a mudstone indicate that the mud was deposited: a) offshore in an ocean basin c) on a flood plain d) on the abyssal plain b) in the deep part of a lake 16. Which of the following would carry the most sediment? a) the White River at low flow b) a mountain stream at normal flow e) angry sand layers e) on the moon c) the Mississippi river near flood stage d)100 boy scouts with 5 gal buckets of sand