Original Project
Plate Tectonics
Item PT025001: Earth's plates move along with the slightly softened rock material below them.
Which of the following is TRUE about the movement of earth’s plates?
- They do not move because they sit on a layer of solid rock.
- They move along with the layer of slightly softened rock below them.
- They move by floating on a layer of completely melted rock below them.
- They do not move until the solid rock layer beneath them temporarily melts and moves.
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 1475 |
6–8 n = 971 |
9–12 n = 496 |
Male n = 698 |
Female n = 753 |
English n = 1336 |
Other n = 100 |
||
| A. | They do not move because they sit on a layer of solid rock. | 6% | 6% | 5% | 6% | 6% | 6% | 6% |
| B. | They move along with the layer of slightly softened rock below them. | 37% | 38% | 36% | 35% | 40% | 36% | 48% |
| C. | They move by floating on a layer of completely melted rock below them. | 35% | 33% | 38% | 39% | 31% | 35% | 26% |
| D. | They do not move until the solid rock layer beneath them temporarily melts and moves. | 22% | 22% | 21% | 20% | 23% | 22% | 20% |