Chpt 6 Grade 8 Flashcards
T or F birds are most likely to be fossils
True
T or F to uncomformities question
T
T or F earth alone has fertile soil bc of living things
True
What is preserved evidence of organisms
Fossils
What is a large mass of igneous rock pushed together
Intrusion
What’s the cross section of soil and bedrock
Soil profile
What is the order of rocks
Geologic column
What’s a break of record / time in rocks
Uncomformity
Say order of bedrock, o horizon, c horizon, b horizon, a horizon
Match it with description of - topsoil, loose organize debree, subsoil, partially weathered bedrock
1- o horizon - loose organic debree
2- a horizon - topsoil
3- b horizon - subsoil
4 - c horizon - partially weathered rock
Why are soils in tropical regions not fertile
Too much water durians out nutrients carrying away the topsoil
What does the law of superposition state
Rock is older than the rock above it and younger than the rock below it
MC law of superposition question
D
Mainf eson for something question MC
Climate
mc not means of producing fossils ?
Laying on topsoil in sun
3 tools geologists use to determine age of earth
Carbon 14, varves, tree rings, soil profile
What’s the soil composition of soil where you live? Thick or thin? What’d an you do to keep it fertile
It’s very thick and fertile topsoil, and give it proper rotations and plant plenty of plants and try to torrent erosion
To or F soil horizon next to bedrock is broke into tiny grains bc of layer above it
False bc of erosion overtime
