The familiar outline of a volcano hides vocabulary for underground passages and solid intrusions. Twelve conceptual sections from Magma reservoir to Country rock let you read the difference between a route, a body and the material around it.
Which names and sets will you practise?
Magma reservoir, Main conduit and Lateral conduit precede Central vent and Crater. Dike, Sill and Laccolith introduce intrusions; Volcanic plug, Lava layer, Tephra layer and Country rock complete the set. Summit openings, underground passages and an eroded remnant share a vocabulary list but do not represent one volcano at one moment. The focus is internal position and containment rather than the broader landform list.
The collection contains 12 names in 1 set. The examples below are actual entries from each set rather than the complete lists. Open a set link to inspect its full sequence and choose a manageable amount of vocabulary for your first session.
Read the differences before typing
A dike cuts across bedding; a sill follows it. The laccolith has a relatively flat base and a domed roof lifting the overlying beds. Crater is not interchangeable with the smaller Central vent, nor an open conduit with a solidified Volcanic plug. A magma reservoir should not be read as an empty cave. Keep an intrusive body separate from the country rock that surrounds it.
For Dike and Sill, follow the surrounding beds and check whether the intrusion crosses or follows them. Keep Crater separate from Central vent, and an open conduit separate from a solidified Volcanic plug when copying each full name.
From the first input to a completed round
The current name stays visible beside the picture, so you can read rather than identify an unlabelled object. Look at the complete spelling of Magma reservoir and check your keyboard before typing. The first input starts the timer; a matching display name or registered alternative advances automatically without Enter.
Edit unfinished text directly in the field. Pressing Enter with an incorrect nonempty answer adds one error and clears that attempt. The result does not count every deleted or replaced letter as a separate error. When a new name appears, read its picture and words instead of repeating the previous answer.
Displayed names and registered alternatives
The complete name displayed in the current language is the most reliable answer. After each arrow below is an example actually accepted for that particular entry. Alternatives vary by name and language: a shortened form working for one prompt does not create a shortening rule for the rest of the set.
Matching normalizes case, spaces and supported punctuation. Latin accents may be omitted, and German ß can be entered as ss. Meaningful words and numbers still need to match. To practise another language, change the page language first and use that page's labels or registered answers instead of assuming an arbitrary translation will work.
- Magma reservoir → Magma chamber
- Main conduit → Central conduit
- Lateral conduit → Side conduit
Choose a small goal for your second round
Your next goal can be more specific than speed. Choose a name that made you pause, such as Sill, read it in full, and retry the same set in the same language. Note whether you used full names or alternatives and whether you changed devices so that the comparison has useful context.
After a completed round, review time, keystrokes per minute, errors and the best record. Best times are stored in this browser separately by topic, set and language. Results are not combined across devices through an account; keep your own dated note of words you reread if you want a longer study record.
Understand what the illustrations cover
These educational models are neither subsurface survey images nor eruption forecasts. The neck represents solidification and erosion; lava and pyroclastic layers show accumulation, while intrusions use simplified bedding comparisons. Colors express selection rather than temperature or natural rock color, and scales vary. A simple reservoir outline does not establish an actual underground boundary; specialist geological review remains pending.
Use these boundaries to treat the illustrations as aids for reading terminology. A correctly typed name records a vocabulary task, not practical competence in identifying or handling the real subject. When you return to a book or class, check that source's definitions and scope to connect the words with their original context.
Continue with another topic or language
The two topics below offer related vocabulary for another reading session. Keep the familiar input routine while changing the subject. Lists differ in length and word size, so compare completion times between attempts with the same conditions rather than across unrelated games.
This guide and its game are available in Korean, English, Japanese, Simplified Chinese, Traditional Chinese, Spanish and German. Change the language menu to read the instructions and names in that language. The game links below retain your current language choice.