Plate Tectonics Is Like a "Conveyor Belt," with New Material

question 45

Multiple Choice

Plate tectonics is like a "conveyor belt," with new material created at _____, and old material recycled back into the mantle at _____. ​

• A)trenches; subduction zones
• B)mid-ocean ridges; subduction zones
• C)convergent boundaries; subduction zones
• D)subduction zones; mid-ocean ridges
• E)mid-ocean ridges; rift zones

---

Definitions:

Standard Costs

Predetermined costs that are used as benchmarks against which actual costs are compared.

Kilograms

A unit of mass in the metric system, equivalent to 1,000 grams, used globally for measuring weight.

Per Hour

A rate or measurement that denotes something occurring or calculated over the course of an hour.

Material Variance

The difference between the actual cost of materials used in production and the standard cost expected.