Career upgrade: Learn practical AI skills for better jobs and higher pay.
Level up
PracticeVideosBlogFlashcardsEspañol
All Practice Exams

100+ Free DSST Introduction to Geology Practice Questions

Pass your Introduction to Geology exam on the first try — instant access, no signup required.

✓ No registration✓ No credit card✓ No hidden fees✓ Start practicing immediately
100+ Questions
100% Free
1 / 100
Question 1
Score: 0/0

At a subduction zone, which rock-cycle pathway is especially important?

A
B
C
D
to track
Same family resources

Explore More DSST

Continue into nearby exams from the same family. Each card keeps practice questions, study guides, flashcards, videos, and articles in one place.

DSST A History of the Vietnam War

Practice Questions

DSST Art of the Western World

Practice Questions

DSST Astronomy

Practice Questions

DSST Business Ethics and Society

Practice Questions

DSST Business Mathematics

Practice Questions

DSST Computing and Information Technology

Practice Questions
2026 Statistics

Key Facts: DSST Introduction to Geology Exam

100

Multiple-choice questions

DSST Introduction to Geology fact sheet

2 hours

Official testing time

DSST Introduction to Geology fact sheet

400

ACE-recommended minimum scaled score

DSST Introduction to Geology exam page and technical data sheet

3 semester hours

ACE-recommended lower-level baccalaureate credit

DSST Introduction to Geology fact sheet

$100

DSST test fee before any site administrative fee

DSST Questions and Answers

30%

Official weight for each of Core Knowledge, Surface Processes, and Tectonic Earth Processes

DSST Introduction to Geology fact sheet

DSST Introduction to Geology is a 100-question, two-hour multiple-choice exam with an ACE-recommended minimum scaled score of 400 for 3 lower-level baccalaureate semester hours. The official outline weights Core Knowledge, Surface Processes, and Tectonic Earth Processes at 30% each, with Applications at 10%.

Sample DSST Introduction to Geology Practice Questions

Try these sample questions to test your DSST Introduction to Geology exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which statement best defines a mineral in physical geology?
A.A naturally occurring inorganic solid with an orderly internal structure and definite chemical composition
B.Any solid material found on Earth's surface, including glass and plastic
C.A mixture of several rocks that has been compacted by pressure
D.A fossil-bearing layer that formed only in marine environments
Explanation: A mineral is naturally occurring, inorganic, solid, crystalline, and has a composition that can be expressed within a definite range. Rocks are aggregates of one or more minerals, so mineral identification starts with crystal structure and chemistry rather than field setting alone.
2A mineral breaks along smooth, flat planes in three directions at right angles. Which property is being described?
A.Streak
B.Cleavage
C.Specific gravity
D.Crystal habit
Explanation: Cleavage is the tendency of a mineral to break along planes of weakness in its crystal structure. The number and angles of cleavage directions help distinguish minerals such as halite, calcite, mica, and feldspar.
3Why do intrusive igneous rocks usually have larger crystals than extrusive igneous rocks?
A.They cool slowly below the surface, allowing crystals more time to grow
B.They form only from sedimentary layers rich in fossils
C.They are always melted by river water before solidifying
D.They cool instantly in air, trapping crystals that already existed
Explanation: Intrusive magma cools slowly underground, so ions have time to arrange into larger mineral crystals. Extrusive lava cools quickly at or near the surface and commonly produces fine-grained, glassy, or vesicular textures.
4Which observation most strongly suggests that sediment has been transported a long distance by water?
A.Angular grains with many sharp edges
B.Rounded grains with similar grain sizes
C.Large unweathered crystals in a coarse interlocking texture
D.Parallel mineral bands produced by directed pressure
Explanation: Longer transport tends to abrade grains, making them rounder, and flowing water can sort particles by size. Rounding and sorting are common clues used to infer sediment transport history.
5Metamorphic rocks form primarily when existing rocks are changed by which conditions?
A.Compaction of loose sediment at Earth's surface
B.Heat, pressure, and chemically active fluids without complete melting
C.Cooling of lava during a volcanic eruption
D.Evaporation of seawater in a restricted basin
Explanation: Metamorphism changes a rock's minerals, texture, or composition through heat, pressure, and fluids while the rock remains mostly solid. If the rock completely melts, the result is magma and eventually igneous rock.
6In the rock cycle, what process changes loose sediment into sedimentary rock?
A.Weathering alone
B.Lithification
C.Partial melting
D.Foliation
Explanation: Lithification includes compaction and cementation, which turn loose sediment into sedimentary rock. Weathering creates sediment, but burial and cementation are needed to make a solid rock.
7Which feature is most characteristic of a divergent plate boundary?
A.New oceanic crust forms as plates move apart
B.One continental plate always overrides another continental plate
C.Plates slide past one another without volcanism or earthquakes
D.Old oceanic lithosphere thickens into a stable craton
Explanation: At divergent boundaries, plates separate and mantle-derived magma rises to create new lithosphere, as at mid-ocean ridges. Divergence is an essential part of seafloor spreading.
8On the Mohs hardness scale, what does it mean if mineral A scratches mineral B?
A.Mineral A has a higher hardness than mineral B
B.Mineral A must have a lower density than mineral B
C.Mineral B has a higher melting point than mineral A
D.Both minerals must have the same chemical composition
Explanation: The Mohs scale ranks minerals by resistance to scratching. If one mineral scratches another, the scratching mineral is harder than the mineral being scratched.
9Which pair correctly matches an igneous rock with its general composition?
A.Basalt - mafic
B.Rhyolite - ultramafic
C.Gabbro - felsic
D.Peridotite - intermediate
Explanation: Basalt is a fine-grained mafic igneous rock rich in iron and magnesium-bearing minerals. Mafic compositions are common in oceanic crust and at many divergent boundaries.
10Symmetrical magnetic stripes on both sides of a mid-ocean ridge are best explained by which process?
A.Seafloor spreading during repeated magnetic reversals
B.Rapid burial of continental river deposits
C.Subduction of continental crust beneath oceanic crust
D.Weathering of basalt into red clay
Explanation: As basaltic lava cools at mid-ocean ridges, magnetic minerals lock in the direction of Earth's magnetic field. Repeated magnetic reversals create matching stripe patterns as new crust moves away from the ridge.

About the DSST Introduction to Geology Exam

Introduction to Geology is a DSST Physical Sciences credit-by-exam covering core geology knowledge, surface processes, tectonic earth processes, and applications. The official DSST fact sheet lists 100 multiple-choice questions, a two-hour time limit, 3 lower-level baccalaureate semester hours, and an ACE-recommended minimum score of 400.

Assessment

Multiple-choice exam; the official fact sheet states that some questions are pretest questions that will not be scored.

Time Limit

2 hours

Passing Score

400 scaled score (ACE-recommended minimum score; each institution determines whether to award credit)

Exam Fee

$100 DSST test fee; testing-site administrative fees vary; DANTES may fund eligible first attempts (Prometric DSST; DANTES funding is available for eligible military test takers)

DSST Introduction to Geology Exam Content Outline

30%

Core Knowledge

Earth materials, minerals and rocks, igneous rocks, sedimentary rocks, metamorphic rocks, the rock cycle, and plate tectonics including geomagnetics, plate boundaries, and plate movements.

30%

Surface Processes

Weathering and soil, mass wasting, streams and floods, groundwater and karst, glaciers and glaciation, oceanic and coastal systems, deserts and wind, and the hydrologic cycle.

30%

Tectonic Earth Processes

Geologic time, planetary geology, relative and absolute time, field relations, structural geology, folding, faulting, mountain building, volcanoes and hazards, earthquakes, seismology, Earth's interior, gravity, and isostasy.

10%

Applications

Mineral and energy resources, environmental geology, and climate change.

How to Pass the DSST Introduction to Geology Exam

What You Need to Know

  • Passing score: 400 scaled score (ACE-recommended minimum score; each institution determines whether to award credit)
  • Assessment: Multiple-choice exam; the official fact sheet states that some questions are pretest questions that will not be scored.
  • Time limit: 2 hours
  • Exam fee: $100 DSST test fee; testing-site administrative fees vary; DANTES may fund eligible first attempts

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

DSST Introduction to Geology Study Tips from Top Performers

1Use the official four-domain outline as the study checklist and keep review proportional to the 30/30/30/10 weighting.
2For core knowledge, connect mineral properties, rock textures, and rock-cycle pathways instead of memorizing isolated names.
3For surface processes, practice matching landforms and deposits to process: streams, groundwater, karst, glaciers, coasts, deserts, and wind.
4For tectonic processes, review relative dating, structural geology, volcanoes, earthquakes, Earth's interior, gravity, and isostasy as connected evidence systems.
5For applications, focus on how geologic processes affect resources, hazards, environmental contamination, and climate-related decisions.

Frequently Asked Questions

Is DSST Introduction to Geology a current DSST exam?

Yes. GetCollegeCredit lists Introduction to Geology as a current DSST Physical Sciences exam, and DANTES lists Introduction to Geology under DSST Physical Science exam subjects.

How many questions are on DSST Introduction to Geology?

The official DSST Introduction to Geology fact sheet states that the exam contains 100 questions to be answered in 2 hours. It also notes that some questions are pretest questions that will not be scored.

What score is recommended for DSST Introduction to Geology credit?

The official DSST exam page and fact sheet list a minimum score of 400. DSST and its technical data sheet also note that institutions determine whether and how they award credit, so confirm your school's policy before testing.

How much credit is DSST Introduction to Geology worth?

The DSST fact sheet lists Introduction to Geology as a lower-level baccalaureate exam with an ACE recommendation of 3 semester hours.

What does DSST Introduction to Geology cover?

The official outline weights Core Knowledge at 30%, Surface Processes at 30%, Tectonic Earth Processes at 30%, and Applications at 10%.

How much does the DSST Introduction to Geology exam cost?

The DSST FAQ lists a $100 test fee per exam, not including any administrative fee charged by a testing site. DANTES may fund eligible military first attempts.

Can DSST Introduction to Geology be taken remotely?

Prometric and DANTES describe remote proctoring as available for DSST exams, with Principles of Public Speaking identified as the exception. Availability can still depend on candidate category and scheduling rules.