AsterQuiz Soil Formation & Humus QuizOnline version Soil basics game by liza Mae 1 What is the first step in soil formation? a Addition of organic matter b Erosion of soil c Weathering of rocks 2 When rocks break into smaller pieces, what are they called? a Topsoil fragments b Soil aggregates c Rock particles 3 What adds organic matter to soil during formation? a Erosion removal b Addition of organic matter c Water drainage 4 Which step leads to the formation of topsoil? a Formation of topsoil b Weathering of rocks c Breaking into small particles 5 What is the fifth stage in soil formation called? a Fresh material b Decomposition stage c Mature soil 6 Which soil type holds water and nutrients well and is good for most plants? a Sandy soil b Clay soil c Loam soil 7 Which soil type is best for plants that need good drainage? a Sandy soil b Clay soil c Loam soil 8 Which soil type is most fertile and supports many plants? a Loam soil b Sandy soil c Peaty soil 9 What is humus? a Pure mineral particles b Unbroken rock fragments c Dark, crumbly part of soil from decomposed matter 10 Which practices help keep soil healthy longer? a Keep soil covered, add compost, prevent erosion b Leave soil bare and dry c Overwater constantly
