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JLC 4th Gr. Sci Ch 3
JLC 4th Grade Science Chapter 3
| Question | Answer |
|---|---|
| adaptations | a body part or behavior that helps something live |
| basic needs | food, water, air, shelter |
| extinction | what happens when all members of a species die out |
| hibernation | a dormant, inactive state in which normal body activities slow |
| instinct | an inherited behavior that helps an animal meet its needs |
| learned behaviors | behaviors that were taught to an animal and help it meet its needs |
| migration | animals moving as a group from one region to another |
| fossil | Evidence of a plant or animal that lived long ago |
| Flat ______ is an adaptation that horses have so they can chew grass. | teeth |
| A basic need plants meet by themselves if they have sunlight | food |
| Name an example of a learned behavior | bicycle riding / reading |
| What happens to an animal's body temperature and heart rate during hibernation | The body temperature goes down and the heart rate slows |
| Infer why birds that migrate in winter arrive at the same destination at different times. | They take different routes, some have shorter distances to travel, or they start at different times. |
| Name an extinct animal | auk, woolly mammoth, saber-toothed cat |
| Which animal's fossil shows it has changed little over time? | Turtle |
| What conclusion can you draw about the shrinking animal population in an ecosystem that is noted to have fewer plants? | There is not enough food to support the amount of animals because there are fewer plants. Maybe lack of water, which led to plants dying out. This affects entire ecosystem. |
| Name 2 things fossil footprints tell scientists | 1. how big they were 2. how they moved |
| Why do you think many of the animals are smaller than millions of years ago? | They adapted to changes in their environment |
| Describe the importance each stage of a tree. | Seeds grow into new trees Adult trees provide shade, wood, and fruit Decaying dead trees return nutrients to the soil for new trees to grow. |
Created by:
jkm1123
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