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5th Science Eng_2
5th Grade Science Engineering Quiz
| Question | Answer |
|---|---|
| 4 things engineers/architects need to find out about the area they plan to build a bridge. | 1 - Span 2 - Traffic Load 3 - Soil and bedrock 4 - Weather (windy, extremes temps, tides) |
| 4 main GOALS of an engineer/architect when designing a bridge | 1- Strong 2 - Safe 3 - Long lasting 4 - Budget |
| 2 MODERN materials that are used for bridges | 1 - Prestressed concrete 2 - Steel |
| 2 ways a bridge can be HELPFUL to the people in the area | 1 - Save gasoline by going shorter distances 2 - burn less gas so less CO2 pollution in the atmosphere |
| 2 Ways a bridge might be HARMFUL to the natural area and organisms | 1 - Grass and farmland dug up 2 - Destroy natural habitat for plants and animals, so many die or need to relocate to survive |
| Suspension Bridge | A bridge that droops down between the two ends that hold it up. |
| Beam Bridge | A bridge that is flat across the bridge deck and supported at the two ends by the abutments. |
| Arch Bridge | A bridge that reaches across a river in an arching shape rather than straight and flat. |
| 2 earliest materials used for ANCIENT bridges | 1 - Natural cement 2 - Stones / rocks |
| 2 ways bridge construction TODAY is better protecting the environment | 1 - Special erosion barriers are put all around the site to keep loose sediments from washing into lakes and rivers 2 - Fewer plants and trees are removed |
Created by:
RoperFive
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