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Cloud Types & What They Mean Flashcards

The ten cloud genera of the WMO International Cloud Atlas, each with its official definition and height level, and how a genus differs from a species or a variety.

Free to play in your browser — no account, no install. All 16 cards are free forever — the deck is shorter than the free 30. The deck opens with Cirrus (Ci), Cirrocumulus (Cc), Cirrostratus (Cs) and Altocumulus (Ac) and runs to 16 cards in all.

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Cloud Types & What They Mean flashcards — the free 16

Every question and answer on the free cards, written out. Check them against your own textbook before you spend anything.

Cirrus (Ci)
High level — detached white filaments, patches or narrow bands, fibrous like hair or with a silky sheen
Cirrocumulus (Cc)
High level — thin white patch or layer of very small grains or ripples, with no shading; elements under 1° wide
Cirrostratus (Cs)
High level — transparent whitish veil, fibrous or smooth, that often produces halo phenomena
Altocumulus (Ac)
Middle level — white or grey patches, rolls or rounded masses, generally with shading; elements 1°–5° wide
Altostratus (As)
Middle level — grey or bluish sheet; thin parts show the Sun as through frosted glass, and it shows no halo
Nimbostratus (Ns)
Middle level for the WMO, though it usually spreads into the other two — grey layer of rain or snow, Sun blotted out
Stratocumulus (Sc)
Low level — grey or whitish rolls or rounded masses, almost always with dark parts; elements over 5° wide
Stratus (St)
Low level — grey layer with a fairly uniform base; may give drizzle, snow or snow grains; halo only in extreme cold
Cumulus (Cu)
Low base — detached, sharp-edged heaps with cauliflower tops, brilliant white in sun, dark flattish bases
Cumulonimbus (Cb)
Low base, great vertical extent — a mountain or tower of cloud, top often flattened into an anvil; thunderstorms
The high level (cirro-)
Cirrus, Cirrocumulus, Cirrostratus — bases about 5–13 km in temperate latitudes; 3–8 polar, 6–18 tropical
The middle level (alto-)
Altocumulus, Altostratus, Nimbostratus — bases about 2–7 km in temperate latitudes; 2–4 polar, 2–8 tropical
The low level
Stratus, Stratocumulus, Cumulus, Cumulonimbus — bases from the Earth's surface up to 2 km at every latitude
Which genera break out of their level?
Nimbostratus usually reaches into both others; Altostratus often extends higher; Cumulus and Cb tops can too
Genus, species, variety — which does this deck teach?
The genera: the ten top-level WMO types. Species describe shape and structure, varieties arrangement and transparency
What do cirro-, alto-, strato-, cumulo- and nimbo- mean?
Latin: cirrus a lock of hair, altum height, stratus spread in a layer, cumulus a heap, nimbus a rainy cloud

Cloud Types & What They Mean flashcards — questions people ask

How many cards are in the Cloud Types & What They Mean flashcard deck?
The Cloud Types & What They Mean deck on PuzzlePage has 16 cards, and all 16 are free to play and free to download with no account and no payment. 16 cards. The WMO recognises exactly ten cloud genera — that is the whole top level of the classification, not a selection. The other six cards are the three height levels, the genera that cross them, the genus/species/variety distinction and the Latin roots.
What is on the cloud types & what they mean flashcards?
The ten cloud genera of the WMO International Cloud Atlas, each with its official definition and height level, and how a genus differs from a species or a variety. Cards look like this: Cirrus (Ci) → High level — detached white filaments, patches or narrow bands, fibrous like hair or with a silky sheen; Cirrocumulus (Cc) → High level — thin white patch or layer of very small grains or ripples, with no shading; elements under 1° wide. The deck is written for grades 5–12 and filed under science.
Can I study cloud types & what they mean flashcards online for free?
Yes. All 16 cards of the Cloud Types & What They Mean deck play free in any web browser at puzzlepage.app, with no account, no app and no card details. It works on a phone, tablet, Chromebook, laptop or classroom projector. Practice mode flips through the cards with nothing scored; quiz mode makes you answer each card before it flips, times the run and scores it.
Are the cloud types & what they mean flashcards accurate?
Every card in the Cloud Types & What They Mean deck cites two independent published sources — two different organisations, not a standards body and a site reprinting it — and a script checks that, rather than taking the writer's word for it. A second specialist then re-verified the deck against sources of their own, without reading the citations first. That is the difference from a user-generated flashcard site, where the cards are whatever a stranger typed and nobody is accountable for them.
Can I print the cloud types & what they mean flashcards?
Yes. The Cloud Types & What They Mean cards are available as a printable double-sided PDF to cut up, as well as playable in the browser. The whole 16-card printable is free to download, with no account.
How should I use the Cloud Types & What They Mean deck to revise?
Start in practice mode and go through the Cloud Types & What They Mean deck once without scoring, to find out which cards you already know — the deck is dealt in a different order every time you open it, so you are recalling the card rather than its position. Then switch to quiz mode, which times and scores the run and lets you re-run only the cards you missed. Use the "flip deck" control to swap which side is the question: recognising an answer is much easier than producing one, so a deck you find easy one way round is usually the harder and more useful drill the other way. Two or three short sessions across a week beat one long one, which is the whole reason flashcards work.
What grade level are the cloud types & what they mean flashcards for?
The Cloud Types & What They Mean deck is written for grades 5–12. Because the cards are plain term-and-answer pairs, they are also used outside that band — by adults revising science, and by teachers running them as a whole-class starter on a projector.

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