3rd Grade Science : Life Science
Study concepts, example questions & explanations for 3rd Grade Science
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Example Questions
Example Question #6 : Use Fossils To Provide Evidence Of Organisms
Fossils can provide evidence about organisms. Which statement is something fossils can tell us about a plant or animal?
Fossils provide evidence of the size of an organism.
Fossils provide evidence of the location an organism lived.
All of the answer choices are correct.
Fossils provide evidence of changes to the organism's structure through time.
All of the answer choices are correct.
Fossils seem simple, but they contain a vast amount of information for researchers and scientists to study. Fossils can give us a general idea of an organism's size, how it has changed or evolved, and where it lived on Earth. Scientists and researchers can learn immense amounts of information from fossils.
Example Question #2 : Use Fossils To Provide Evidence Of Organisms
Scientists on an expedition recently found the fossil below. What assumption can the scientists make about this dinosaur?
This dinosaur may have been green and brown.
This dinosaur may have used its horns for defense.
This dinosaur may have been scared of flying insects and birds.
This dinosaur was very small and petite.
This dinosaur may have used its horns for defense.
Fossils tell scientists many things about animals and plants that lived long ago. If a researcher were studying this dinosaur, they could make assumptions about its life based on its physical characteristics. This dinosaur has large horns, so it likely used them in defense situations. With only fossils, it is not possible to tell what it was scared of or what its color was. Scientists can measure the bones and compare them to other findings to determine if the dinosaur would be considered small or large. In this case, the dinosaur appears to be large.
Example Question #2 : Use Fossils To Provide Evidence Of Organisms
A group of researchers found the fossils below on a dig. What assumptions can they make about these organisms?
They may have lived in groups.
They could swim.
They are a species of fish.
All of the answers are correct.
None of the answers are correct.
All of the answers are correct.
Researchers studying this fossil can learn quite a few things from something that appears so simple. Scientists could determine that these are a species of fish based on their shape and bone structure, they could swim as evidence of the tail and structure, and with so many together in one place, it is possible they lived in groups or schools. Scientists can also test the age of the rock, learn about the location they lived, and determine which family of aquatic creatures they are similar to.
Example Question #3 : Use Fossils To Provide Evidence Of Organisms
How does a fossil tell us about an organism that lived in the past?
A fossil can tell us the color of an organism, its favorite food, and the age of the organism.
A fossil cannot tell us anything about an organism that lived in the past. We would need to see the plant or animal to make any decisions about it.
A fossil provides evidence about the approximate size of an organism, its living location, and the conditions that an organism lived in.
A fossil can tell us the approximate size of an organism, its favorite food, and how many offspring it had.
A fossil provides evidence about the approximate size of an organism, its living location, and the conditions that an organism lived in.
Fossils are a rich source of information to learn about organisms of the past. A fossil can tell us the size of an organism or at least its bones. We can also study where the organisms lived based on where the fossil is found. Scientists can explore what the conditions of that area were, so we know if the organism was an aquatic plant, a land-dwelling creature, or something that needed warm weather.
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