Module 1 Grade 7

Ocean trenches are formed along lines where two plates diverge under the water. 

• True

• False

) Mid-ocean ridges are formed along lines where two plates diverge under the water. 

• True

• False

Where can volcanoes form?

• convergent plate boundaries

• divergent plate boundaries

• over hotspots in the middle of plates

• all of the above

A vast, underwater mountain chain is called a(n) _________.

• deep-sea trench

• oceanic crust

• ocean ridge

• ocean floor sediment

In areas where freezing and thawing occur frequently, rocks weather rapidly because of the ____ of freezing water.

• evaporation

• expansion

• leaching

• oxidation

How are ice and plant roots weathering agents?

• They melt minerals in rocks.

• They grind and polish rock by moving particles against it.

• They expand within cracks in rock to break the rock apart.

• They are not weathering agents.

The molten material deep inside Earth from which igneous rocks form is called ____.

• magma

• lava

• neither a nor b

• both a and b

A classification of metamorphic rocks would include whether they are ____.

• chemical or organic

• intrusive or extrusive

• foliated or nonfoliated

• basaltic or granite

Sedimentary rocks are ____.

• formed from magma

• a type of foliated igneous rock

• formed because of changes in temperature and pressure, or the presence of hot watery fluids s

• formed when loose materials become pressed or cemented together or when minerals form from solution

A break in Earth’s lithosphere along which movement occurs is called a(n) ____.

• fault

• earthquake

• strain

• stress