ISA Certified Arborist Vocabulary Game
Exam terms with clues and explanations by OpenExamPrep.
About the ISA Certified Arborist Vocabulary Game
A free word game for the ISA Certified Arborist exam. Each round shows a clue for one of 20 exam terms across 10 topics. Recall the term, spell it out, then read a short explanation. Rounds pick a random term, so you can keep playing as long as you like.
How to Play
- 1Read the clue and type a term with the right number of letters (3 to 6). Abbreviations count: type the letters only.
- 2Press Check Answer or Enter. Each letter changes color to show how close you are.
- 3You have 6 tries. Stuck? Need a hint? asks the AI tutor for a nudge without giving the term away, and Skip moves to a new term.
- 4After the round, read the explanation, ask the AI to explain it, share your result, or press Next.
- ARight letter, right spot
- AIn the term, wrong spot
- ANot in the term
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Topics in the ISA Certified Arborist Vocabulary Game
Tree biology
Identification
Soil management
Installation
Pruning
Diagnosis
Construction
Tree risk
Safe work
Urban forestry
Sources for these terms (16)
- Tree Decay: An Expanded Concept · Source checked 2026-11-03
- Compartmentalization of Decay in Trees · Source checked 2026-11-03
- Flora of the Fraser Experimental Forest, Colorado · Source checked 2026-11-03
- Sugar Maple, Silvics of North America · Source checked 2026-11-03
- Wetland Soils, Hydrology, and Geomorphology · Source checked 2026-11-03
- Connecticut Tree Owner's Manual · Source checked 2026-11-03
- How to Prune Trees, NA-FR-01-95, Revised August 2012 · Source checked 2026-11-03
- Integrated Pest Management (IPM) Principles · Source checked 2026-11-03
- Brown Root Rot Disease Caused by Phellinus noxius on U.S.-Affiliated Pacific Islands · Source checked 2026-11-03
- Avoiding Tree Damage During Construction · Source checked 2026-11-03
- Using the ISA Basic Tree Risk Assessment Form · Source checked 2026-11-03
- Quantified Tree Risk Assessment Used in the Management of Amenity Trees · Source checked 2026-11-03
- Logging eTool: Personal Protective Equipment, Leg Protection · Source checked 2026-11-03
- CPR · Source checked 2026-11-03
- Urban Tree Canopy Assessment: A Community's Path to Understanding and Managing the Urban Forest · Source checked 2026-11-03
- Logging eTool: Felling Trees, The Back Cut, Felling Hinge · Source checked 2026-11-03
About the Certified Arborist Exam
The ISA Certified Arborist exam is an internationally recognized voluntary credential for professional arborists. The current ISA program guide and 2022 job task analysis outline use 200 multiple-choice questions, including 20 unscored pretest questions, a 3.5-hour time limit, a 76% passing score, and 10 weighted domains led by Safe Work Practices, Pruning, Tree Biology, and Tree Risk.
Exam sponsor: International Society of Arboriculture (ISA). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.
Questions
200 questions
Time Limit
3.5 hours
Passing Score
76%
Reported exam pass rate: Not published. ISA does not publish aggregate pass rates for this credential. Exam sponsor website
Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.
Frequently Asked Questions
Is the ISA CA vocabulary game free?
Yes. The game is free to play with no sign-up. Signing in adds AI explanations for any term.
How does the ISA CA vocabulary game work?
Each round shows a clue for one of 20 ISA CA terms. Guess the term in six tries: green means the right letter in the right spot, yellow means the letter is in the term but in another spot, and gray means it is not in the term. After the round, read the explanation and play the next term.
Where do the ISA CA terms come from?
OpenExamPrep researched each term from the International Society of Arboriculture (ISA) content outline and primary sources, listed under Sources on this page. The game is independent study material, not an official exam resource.
How hard is the ISA Certified Arborist exam?
The ISA Certified Arborist exam is moderately challenging because it covers 10 job-task-analysis domains across tree biology, identification, soils, planting, pruning, diagnosis, construction impacts, risk, safety, and urban forestry. ISA does not publish an aggregate pass rate. The best preparation is domain-weighted practice tied to real arboriculture decisions.
What is the passing score for the Certified Arborist exam?
The current passing score for the ISA Certified Arborist exam is 76%. ISA notes that the overall passing score can change when a job task analysis is performed, and domain averages are not the same as the overall score because the domains are weighted.