Earth Science: 8C Practice Quiz

1.

5 points

Which of the following are considered volcanic intrusions?

geysers

sills

tephra

plutons

2.

5 points

Minerals which settle or precipitate out when the water cools often produce stepped rock formations called

hot springs

mud pots

terraces

geysers

3.

5 points

Batholiths and laccoliths are both types of

stocks

liths

plutons

dikes

4.

5 points

The internal energy of the earth is called geothermal energy.

True

False

5.

5 points

The continuous cycle of cooler water sinking by means of gravity into geothermally heated rocks and causing the hotter, less dense water to rise nearer to the surface, then lose heat to the cooler rocks is referred to as the __________________.

convection circuit

hydrothermal currents

convection currents

hydrothermal circuit

6.

5 points

The term _____________ gradient refers to the way the temperature within the earth increases continuously with its depth.

7.

5 points

Plutons that seem to have formed from blobs of magma collected at the tops of deep dikes and then cooled to form a dome-shape are called

baccoliths

stocks

batholiths

laccoliths

8.

5 points

Geyser water is heated by magma.

True

False

9.

5 points

Hot groundwater is very effective at dissolving minerals in the rocks that it flows through. The hot water cools when it reaches the surface, causing the minerals to _____________.

precipitate

evaporate

chemically change

become toxic

10.

5 points

Geothermal energy has become a major source of electricity in the United States.

True

False

11.

5 points

Igneous features made by intrustive volcanism never appear above land.

True

False

12.

5 points

A spring that periodically ejects large quantities of hot water and steam is known as a

fumarole

lahar

mud pot

geyser

13.

5 points

A hydrothermal circuit is best seen in

the formation of a pluton

intrusive volcanism

the eruption of a geyser

the formation of flood basalts

14.

5 points

________________ are places where heated groundwater quietly rises to the surface and either flows away from the source or simply evaporates.

hot springs

geysers

hydrothermal circuits

geothermal plants

15.

5 points

Rocks that are affected by heat and pressure change into other kinds of rocks through a process called metamorphism due to igneous intrusions.

True

False

16.

5 points

Vertical is to dike as horizontal is to ________.

17.

5 points

In places where there are thick deposits of fine volcanic tephra form bubbling springs called

mud pots

mud springs

volcanic pots

hot springs

18.

5 points

Diapirs are lower-density, rising blobs of magma that are believed to be the cause of pluton formation.

True

False

19.

5 points

Both sills and dikes can vary in size from just a few centimeters thick to many meters thick.

True

False

20.

5 points

According to the ______-earth view, the earth's internal heat is partly caused by leftover heat from its molten formation, but it is mostly due to the radioactive decay of elements in its interior.