WikiCards
Play on iPhone nowFree in Safari. Add it to your Home Screen.Play
WikiCards · Card list · Science cards · Sonar
Uncommon card · Science
Sonar, an Uncommon card
Sonar is a technique that uses sound propagation to navigate, measure distances, communicate with or detect objects on or under the surface of the water, such as other vessels.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 86
- DEF
- 70
- Power
- 156
- Wikipedia reads a year
- 170,000
Power 156 (ATK + DEF): stronger than 80 % of WikiCards cards.
Sonar quiz: 3 questions
Three questions on the Sonar card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
Acoustic location in air was used before the ______ of radar.
Answer
introduction. Acoustic location in air was used before the introduction of radar. From the Sonar article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Steam locomotive. Steam locomotive 90 · Sonar 86 · Refrigerator 82 · Galactic Center 76 ATK in WikiCards.
In a duel, each round asks a question like these about the opposing card, with 15 seconds to answer.
The facts on the card
The card carries these facts from its Wikipedia article.
- "Sonar" can refer to one of two types of technology: passive sonar means listening for the sound made by vessels, active sonar means emitting pulses of sounds and listening for echoes.
- Sonar may be used as a means of acoustic location and of measurement of the echo characteristics of "targets" in the water.
- Acoustic location in air was used before the introduction of radar.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Sonar article was read about 170,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 86 and blocks with 70: each hit it takes is cut by 28 %.
How to get Sonar
Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.
More Science cards
Cards close in power
The cards just above and just below Sonar in the power ranking, all domains together.
- MicrophoneUncommon · Arts · ATK 83 DEF 73
- CarpUncommon · Nature · ATK 73 DEF 83
- Conservative JudaismUncommon · Society · ATK 84 DEF 72
- FreetownUncommon · Society · ATK 79 DEF 77
- Map projectionUncommon · Science · ATK 79 DEF 77
- Phaseolus vulgarisUncommon · Nature · ATK 75 DEF 81
Card lists
- Wikipedia quizNew questions every day
- All cards from A to ZEvery card, by name
- Science cards
- Legendary cards
- Tier listS and A tiers by power (ATK + DEF)
Credits
Text : Wikipedia, Sonar (revision), CC BY-SA 4.0. Photo : Jean-Michel Roche, CC BY-SA 3.0, Wikimedia Commons.
