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General Science Quiz 366 (20 MCQs)

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1. When a bicyclist uses his brakes suddenly is his acceleration positive, negative, or zero?
2. "Understanding the classification of microorganisms"Is this learning objective well-written?
3. All simple machines create this, which is when a force or motion is magnified to help a person do work.
4. A boy threw pennies in a pool. He noticed they sank and began throwing in other objects that also sank. He states he has come up with a theory, did he follow the scientific method?
5. An elevator traveled 15 floors (150 ft) at a speed of 4.5 m/s. What additional information is needed to determine the velocity of the elevator?
6. The walls of the..... absorb water from the undigested food.
7. An allele that is hidden when the dominant allele is present.
8. It contains a high-density mix of hot lava blocks, pumice, ash and volcanic gas which moves at very high speed down volcanic slopes, typically following valleys.
9. The ability to do work is called
10. A group of tissues that work together is called.....
11. The types of electric charges are:(1)
12. Which of the following ecosystems has the greatest environmental changes of all the marine ecosystems?
13. No definite shape or volume
14. Device used to measure relatively high temperature is?
15. Any time you add energy to something to cause a reaction, the reaction is
16. Which material is not required for photosynthesis?
17. The density of water is
18. A north pole of one bar magnet is..... by the north pole of another bar magnet.
19. Which of the following occurs as the frequency of a wave decreases?
20. When do longest day and shortest night occure in northern hemisphere
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