Geology Key Beds Quiz

Froggy Jumps

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Rock layers and extinctions

حسام محمد

Saudi Arabia

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Geology Key Beds Quiz


Froggy Jumps Geology Key Beds QuizVersion en ligne Rock layers and extinctions par حسام محمد 1 A clearly identifiable layer of rock is called a ______? a water bed b soft bed c key bed 2 A thin layer of volcanic ash is an example of a ______. a Sandy beach b key bed c Limestone cave 3 When many species go extinct at the same time, it is called ______. a Mass extinction b Migration c Discovery 4 Scientists know about mass extinctions by ______. a Finding new species b Observing live animals c Studying fossils and rock layers 5 A thin volcanic ash layer helps geologists identify a key bed because it is ______. a an uneven surface b a distinctive marker c a common layer 6 Mass extinction is best described as many species going extinct at once due to events like ______. a seasonal changes b catastrophic events c gradual evolution 7 Which evidence do scientists study to infer past mass extinctions? a living populations b fossils and rock layers c weather data 8 Which term would you expect to see in stratigraphic sections as a time marker? a key bed b water bed c soft bed 9 To learn about past environments, scientists compare ______ across locations. a soil types b key beds and rock layers c modern climates