Grade 6 · Science · Change over time | QuizPrint

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Grade 6 Science: Change over time QuizPrint.CA Ontario · Life Systems — use fossils and traits to explain how living things and environments change NameDateScore 1. Shell fossils are found in rock 550 metres up a mountain. What is the best explanation? 2. A drought shrinks a pond. Fish that need deep water die, while a few that tolerate shallow water survive and reproduce. What process is shown? 3. Liam studies mice on dark soil. Dark fur becomes more common over 610 years. Why? 4. Which outcome is most likely when a species cannot adapt or move as its only habitat disappears? 5. Which change is passed to offspring as an adaptation? 6. A wetland frog population falls from 500 to 30 as its marsh dries. The frogs have no traits for dry land. If the wetland disappears, what is most likely? 7. Fossils in a lower layer of undisturbed rock are usually... 8. A new disease reaches a population of 225 animals. The population is more likely to survive if... 9. Foxes catch the slowest rabbits for 500 years. Over many generations the rabbits... 10. Mei reads that a species is extinct. That means... Sign in to manage students and save worksheet results. Fresh practice from quizprint.ca. Unofficial practice — not a ministry test or resource. Answer key Grade 6 Science: Change over time Ontario · Life Systems — use fossils and traits to explain how living things and environments change Question numbers match the worksheet. 1.C) that rock was once under the sea 2.C) natural selection favouring traits suited to the new conditions 3.C) dark mice were more likely to survive and have young 4.D) extinction 5.D) a bird's beak shape 6.B) The frog species will become extinct in that region. 7.B) older than fossils in the layers above 8.C) individuals differ in their traits 9.D) tend to be faster 10.A) no members of that species are still alive Keep this page if you are printing for a child. Fresh practice from quizprint.ca. Unofficial practice — not a ministry test or resource.

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