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21. To a brook trout, a stream would be its--25% 25%25%25%
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A. NicheB. HabitatC. CommunityD. Population
22. A bird that dies benefits a tree by providing it with-
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A. MineralsB. CarbohydratesC. WaterD. Oxygen
23. The picture shows a study that Isaac Newton made with a prism to produce a spectrum. Newton’s discovery led most directly to an understanding of the cause of-- 25% 25%25%25%
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A. X-raysB. SunspotsC. RainbowsD. Starlight
24. The Earth’s surface can change either quickly or slowly. Which of these can happen when rocks and soil in the Earth move suddenly?
Landsli
des
Tornadoes
Hurri
canes
Blizza
rds
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A. LandslidesB. TornadoesC. HurricanesD. Blizzards
25. A high soprano signer can break a crystal glass if the glass resonates with her voice. In order to do this, the sound the singer makes has to be--
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A. Speeded up before reaching the glass
B. Amplified before reaching the glass
C. Reflected off the glass
D. Able to vibrate the glass
26. Which of these best represents the Earth’s surface?
F G H J
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A. FB. GC. HD. J
27. Which of these would be used to measure the mass of a marble?
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A. AB. BC. CD. D
28. The circles in the bottles represent the same particles of matter. Which pattern of particles represents a gas in a bottle?
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A. 1B. 2C. 3D. 4
29. A student wants to show how much the use of gasoline has increased over the last ten years. This information would best be displayed in a--
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A. DiagramB. Bar graphC. Line
graphD. Stem-
and-leaf plot
30. The picture shows a bumblebee. Which part of the bumblebee is most helpful in identifying it as an insect?
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A. Shape of eyes
B. Number of legs
C. Presence of wings
D. Location of antennae
31. A student plans to investigate how sound changes when 4 bottles with different amounts of liquid are struck with a mallet. In which order must the bottles be places so that the sound changes from low pitch to a high pitch? 25% 25%25%25%
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A. A,B,D,CB. B,A,D,CC. B,C,A,DD. C,D,B,A
32. Which of these materials is a good conductor of electricity?
Rubber G
lass
Metal
Newsp
aper
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A. RubberB. GlassC. MetalD. Newspaper
33. Which of the following would be classified as a vertebrate?
A B C D
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A. AB. BC. CD. D
34. Why is photosynthesis important for plants?25% 25%25%25%
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A. It collects sunlight which is used to make food for plants.
B. It gets rid of plant waste products
C. It changes plant sugar into stronger chemicals
D. It helps attract insects to plant flowers.
35. In which beaker of water will sugar dissolve the fastest? 25% 25%25%25%
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A. Beaker 1B. Beaker 2C. Beaker 3D. Beaker 4
36. Sailors long ago would catch the current off the coast of Virginia. This current would help them get to-
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A. South AmericaB. Central AmericaC. EuropeD. Southern Africa
37. Some students recorded the number of bean seeds that sprouted in their experimental plots. Each student began with the same number and type of seeds, the same type of soil plot, and the same amount of water and sunlight. Which of the following student most likely made an error in the experiment?
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A. 1B. 2C. 3D. 4
38. A comb is rubbed with a piece of wool fabric and placed next to some scraps of paper. The paper moves toward the comb. The movement of the paper is caused by
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A. Chemical energy
B. Magnetic attraction
C. Mechanical energy
D. Static electricity
39. The simple instrument shown is used to measure---
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A. Air pressureB. Wind speedC. TemperatureD. Precipitation