Item PT032001: As two plates move apart new plate material forms between them.
Each of the diagrams below show a plate boundary where two of the earth’s plates are continuously pulling apart. Which of the following happens over time?
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As the plates pull apart, an empty space forms between them that gets wider over time. -
As the plates pull apart, water immediately fills the empty space between them. -
As the plates pull apart, loose rock material immediately fills the empty space between them. -
As the plates pull apart, new plate material immediately forms between them, so there is no empty space.
- Distribution of Responses
![Chart showing distrubtion of responses for Item PT032001](http://chart.apis.google.com/chart?chs=265x180&cht=bvg&chf=bg,s,00000000&chco=76A4FB|76A4FB|76A4FB|339933&chds=0,100&chd=t:22,22,27,28&chxl=0:|A|B|C|D&chxt=x,y&chbh=a&chbw=a&chm=N*f0*%,000000,0,-1,11,,e::5&filename=PT032001-dist.png)
- Students Responding Correctly
Group | Correct | Total | Percent |
---|---|---|---|
Overall | 887 | 3154 | 28% |
Grades | |||
6–8 | 554 | 2030 | 27% |
9–12 | 329 | 1111 | 30% |
Gender | |||
Male | 436 | 1502 | 29% |
Female | 436 | 1610 | 27% |
Primary Language | |||
English | 816 | 2871 | 28% |
Other | 54 | 217 | 25% |