I've hear"Cold snap" is a thing -- it might be a regionalism. I've never heard of "cold wave." Probably "cold front" or "cold spell" is better.
Yeah, I'd use cold front or cold snap. Never heard cold wave myself. I am a southern Californian tho, so that could be why. haha
Duo. is too forgiving when it comes to mistakes made in Hebrew. On the exercise 'Type what you hear' I typed this below:
גם הקור הזה לא עוזב אותנו.
It's not what the recording said. It said 'gal' not 'gam.' I could understand if I got it correct if I added an aleph or an hey but I wrote a totally different word that changes the meaning of the sentence.
In English sometimes I'll use the word 'a' when it should be 'an' and I get the whole thing wrong according to Duo. It's just a minor grammer mistake that doesn't change the meaing of the sentence.
The correct spelling of the word. Since you appreciate accurate spelling I thought you'd like to know.
I grew up in Cincinnati Ohio so my regional influence would explain a cold snap as a sudden significant drop in daytime temperatures. A cold wave would be a predicted cold temperatures over an extended timeframe.
A cold front is different and describes a meteorological phenomenon that is beyond my understanding to explain.
It's not a cold snap (in the US) and wave only applies to heat, ie heat wave. In the US the most common phrase is "cold front." I have never heard of cold snap ever before in my life.