A) the only process that breaks down rocks. B) the movement of rock particles by wind, water, ice, and gravity C) a process that is only mechanical.. D) the process that breaks rock and other substances down.
A) the movement of rock particles by wind, water, ice, and gravity. B) the process that breaks down rock and other substances at the Earth's surface. C) the only way to break down rocks. D) a process that only involves water.
A) Mechanical B) Erosion C) Chemical D) Deep Freeze
A) True B) False
A) False B) True
A) Repeated freezing and thawing B) erosion C) Acid Rain D) sand storms
A) O, A, E, D B) A, B, C, D C) A, E, I, O D) O, A, B, C
A) humans B) mustard C) humus D) litter layer
A) C B) B C) O D) A
A) Litter layer B) Bedrock C) Top Soil D) Sub Soil
A) True B) False
A) keeps the dead weeds and stalks from the previous year to return nutrients to the soil B) is a poor way to conserve soil C) is done on the contours of the landscape D) tears the ground up and creates erosion problems
A) It becomes the best soil for planting B) It is packed with minerals C) The soil is too wet D) It loses fertility
A) Humus B) Air C) Minerals D) Water
A) True B) False
A) transform boundary. B) rift valley. C) convergent boundary. D) divergent boundary.
A) primary waves B) secondary waves C) Q waves D) Surface waves
A) outer core, mantle, inner core , crust B) crust, mantle, outer core, inner core C) mantle, core, crust, inner core D) crust, outer core, mantle, inner core
A) fire. B) magma. C) rock. D) volcanic ash.
A) layer of hot magma. B) empty. C) a layer of cooled rock. D) a dense ball of iron and nickel. |