Jurassic Period

Why is the Jurassic period often referred to as the "Age of Dinosaurs"?

• Because of the appearance of the first dinosaurs

• Because of the dominance and diversification of dinosaurs during this period

• Because dinosaurs became extinct during this period

• Because it was the only period when dinosaurs existed

What marked the Jurassic era?

• The extinction of the dinosaurs

• The emergence of mammals

• The dominance of dinosaurs and the evolution of iconic reptiles such as sauropods and theropods

• The development of avian life

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NGSS.MS-LS1-5

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How many millions of years did the Jurassic period approximately last?

• 56 million years

• 201 to 145 million years

• 100 million years

• 250 to 200 million years

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NGSS.MS-ESS1-4

Which types of marine life diversified during the Jurassic period?

• Dinosaurs and early birds

• Mammals and amphibians

• Ammonites, marine reptiles like ichthyosaurs and plesiosaurs, and various fish species

• Insects and flowering plants

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Which method is primarily used to determine the age of dinosaur fossils?

• Uranium-lead dating

• Magnetic dating

• Carbon dating

• Stratigraphy

What was the state of mammalian evolution during the Jurassic period?

• Mammals were the dominant species

• Mammals did not exist during the Jurassic

• Mammals were still small and mostly nocturnal, evolving alongside the dominant dinosaurs

• Mammals were large and diurnal

What type of vegetation was predominant during the Jurassic period?

• Flowering plants

• Gymnosperms including conifers, cycads, and ginkgoes

• Ferns and mosses

• Grasses

What was the climate like during the Jurassic period?

• Ice Age conditions with extensive glaciers

• Warm and dry with vast deserts

• Generally warm, with more humid conditions than today

• Variable, with extreme seasonal fluctuations

What is the correct order of the Mesozoic eras?

• Triassic, Jurassic, Cretaceous

• Jurassic, Triassic, Cretaceous

• Cretaceous, Jurassic, Triassic

• Triassic, Cretaceous, Jurassic

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NGSS.MS-ESS1-4

What significant event regarding landmasses occurred during the Late Jurassic?

• The complete formation of Pangaea

• The initial breakup of Pangaea

• Significant separation of continents contributing to regional differences in dinosaur and plant life

• The continents merged together completely

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NGSS.MS-ESS2-2

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