Thursday’s Warm Up

December 5

A delta, the landform found at the mouth of a river, forms when-

A plants on the river bank cause erosionB the river deposits sediments as it slowsC rushing water makes stones in the river smoothD water flowing down the mountain makes it taller

Which of the following landforms is the result of a river carving out land by erosion?

A CanyonB Sand duneC DeltaD Mountain

Students used a fan to blow piles of sand. This best models which of the following natural processes that create changes to the land?

A Weathering of rocks to make soilB Deposition of sediments to form deltasC Formation and movement of dunesD Carving out plains creating canyons

Several layers of sedimentary rock are illustrated. They are in the same order as when they first formed. Which layer formed first?

A Rock Layer WB Rock Layer XC Rock Layer YD Rock Layer Z

Sedimentary rocks form when broken bits of other rock are deposited and then –

A buried and squeezed and cemented togetherB melted by the heat of the earth’s coreC completely dissolved in salt water in the oceanD used by humans as a natural resource