Ni allaf gredu ei fod ond ddeuddeg cwsg tan Nadolig! Rwyf wedi anfon cerdyn Nadolig atoch chi gyd yn y post. Ddiolch i chi gyd am y gwaith caled rydych wedi ei wneud hyd yn hyn.

Dyma'r chweched wythnos a'r olaf o gofnodi tan Ionawr felli Nadolig Llawen oddi wrth Bwlb bychan a fi.

Rwyf wedi mwynhau'r holl sylwadau a chwestiynau dwi wedi cael yn ystod y flwyddyn hon ac yn edrych ymlaen at ateb mwy yn y Flwyddyn Newydd.

Wyf yn gobeithio bod chi gyd yn cael gwyliau gwych ac yn dychwelyd ym mis Ionawr yn awyddus i weld sut mae eich bylbiau yn ei wneud. Os ydych yn pryderu efallai na fydd eich bylbiau yn ddiogel dros y Nadolig, mynd â nhw adref gyda chi - ond cofiwch fod yn rhaid iddynt gael eu cadw y tu allan!

Mae'r tywydd wedi bod yn oer iawn mewn mannau yn ystod yr wythnos neu ddwy ddiwethaf, ond rhagwelir y bydd yn cael cynhesach. Adroddodd Ysgol Harwell -10 ° c ddydd Iau diwethaf. Oer iawn yn wir! A allwch chi gadarnhau hyn yn gywir?

Fy hoff garol Nadolig yw'r 'Holly and the Ivy' oherwydd ei fod yn cynnwys dau o'n planhigion bytholwyrdd brodorol. Roedd y Celtiaid yn defnyddio planhigion hyn i ddathlu Byrddydd y Gaeaf ac wrth gwrs y maent yn cael eu defnyddio gan Gristnogion i ddathlu'r Nadolig.

Os nad ydych yn gwybod ei fod yma yn y geiriau: http://www.carols.org.uk/the_holly_and_the_ivy.htm

Eich cwestiynau, fy atebion:

Greyfriars RC Primary School: We are really enjoying this! Prof.P: So glad to hear it!

DarranPark Primary: There aren't any signs of growth yet. Prof.P: Give it time; you should see something in January.

GlyncollenPrimary School: We have seen a pattern in our temperatures this week. We have also found out a way to stop our rain gauge from falling over. We hope we don't have any snow next week. From Glyncollen year 4 Prof.P: Great to hear you are seeing patterns in your weather data and that you have found a way to stop your rain gauge from falling over. Please let me know how you do it?

BalcurviePrimary School: We have had a lot of ice this week and freezing temperatures. We also had snow over last weekend and on Thursday. Prof.P: I hope it gets warmer for you at the weekend!

St Joseph's Primary School (Penarth): We have noticed how much colder is has got this week. There has been some ice on our plant pots and we feel really sorry for the poor bulbs! Prof.P: Don’t worry too much I’m sure they will be fine.

KilmaronSpecialSchool: Records for rainfall on days with negative temperatures may not be correct as the water had frozen and expanded so reading may be higher than actual water collected Prof.P: Thanks for letting me know Kilmaron; I will make a note of it. If it happens again melt it before you measure. Thanks

Ysgol Pencae: It rained cats and dogs on Friday and was milder. Did it rain more in Cardiff? Prof.P: We only had 10mms of rain in Cardiff a quarter of what you recorded!

Eira wedi gostwng yn Ysgol Gynradd Ladybank yn yr Alban ac yn Ysgol Nether Kellet mae’r glaw wedi rhewi yn eu mesurydd glaw! Yma yng Nghaerdydd, rydym wedi dechrau gweld rhew yn y boreau.

Ar yr adeg hon o'r flwyddyn, mae’r adar yn llwglyd iawn ac yn dechrau bwydo ar aeron. Dechreuodd yr aderyn du yma bwyta'r afalau surion oddi wrth y goeden ar waelod fy ngardd. Nid wyf yn torri llawr y goeden fel ei fod yn ffynhonnell dda o fwyd i'r adar yn y gaeaf. Mae hwn yn aderyn du benywaidd - maent yn frown ac nid oes ganddynt bigau melyn.

Peidiwch ag anghofio i fwydo adar dros y gaeaf. Gwelwch y link yma ermwyn dysgu sut  sut i wneud cacen adar gyflym. Wnaeth chwe deg pump o ysgolion anfon mewn cofnodion tywydd yr wythnos hon! Diolch o galon i bawb ohonoch a anfonodd yn eich recordiadau.

Your questions, my answers:

TorView Community School: Please accept the above data as being CORRECT for TorView CommunitySchool. The previous 'temperature' details were wrongly submitted in degrees 'Fahrenheit' instead of 'centigrade.' Prof.P: Well spotted! Thanks for letting me know, I will remove the Fahrenheit data from your charts. 

Medlar with Wesham CE Primary School: Hi professor plant there has a little bit of rain so we have not had to water them much. They are not growing yet but they are staying healthy. We are being very patient but we just can't wait for them to grow. Prof.P: Good things come to those who wait! It’s so nice when the flowers open in the spring. It cheers me up every year!

RogietPrimary School: How are you professor plant? It has been very cold here in Rogiet. Prof.P: I’m good thanks Rogiet, been cold here too, but I’m wrapping up warm. I hope you are too?

Your school: Westwood CP School: When I measure the rainfall on a Monday do I count the rainfall that fell over the weekend too. Or should I empty the contents when I get to school on Monday and measure at our usual time of 2pm? St. Mary's RC Primary School (Lancashire): What happens on Monday when the rain gauge includes Saturdays and Sunday? Prof.P: Hi Westwood & St Mary’s! Good question! You should measure the rainfall that fell over the weekend, that way we will know exactly how much rain has fallen that week.

LadybankPrimary School: We think our thermometer is broken because it was snowing today and it read 15 degrees. Prof.P: I will send you a new one immediately. Enjoy the snow! I’m very jealous.

Ysgol Pencae (Conwy): We had lots of rain over the weekend. The weather has got colder. We are measuring our rainfall in ml with a homemade gauge, is this correct? Prof.P: Hi Ysgol Pencae. Great that you have managed to build your own rain gauge! Please could you measure the rainfall in mm rather than ml. Everyone across the country measures in mm so in order to compare we need it in mms. See this video about how to do this. You will be able to convert the mls back into mm by pouting the amounts you measured into your rain gauge and seeing what the mms are. Hope that makes sense. Thanks

Ysgol Capelulo: This week has been really cold and wet. It was very wet on Monday and really cold on Thursday, on Wednesday and Thursday there was no rainfall. This week in Wales it has been very windy. We enjoy taking other people out to help us take the readings. Goodbye. :) Prof.P: Great idea getting others involved, glad you are enjoying!

KilmaronSpecialSchool: We have had to move the location of our rain funnel as one of the pupils in another class was caught emptying it out. It is now hidden behind a bush outside our classroom window. Prof.P: Oh dear, good plan to hide it!

St Joseph's Primary School (Penarth): We have noticed how much the temperature has fallen this week and we are concerned about our poor bulbs getting too cold! Prof.P: Don’t worry they will be expecting it to be cold at this time of year.

Greyfriars RC Primary School: One of our pots has been knocked over we are worrying about vandalism. Prof.P: Oh no! If you re-plant them they are often fine. If the vandals are from outside the school perhaps you should think if there is anywhere safer around the school? If they are from in the school you should talk to them.

Your school: Ysgol Porth Y Felin: To PP the plants are fine we have 2 plants that have started to grow and the temperatures are quite close apart from Thursday, when it was very cold. Prof.P: Gosh growing already!

St Mary's CatholicPrimary School: It has been very cold this week; we hope our bulbs are tucked up nice and warm in their pots. Prof.P: I’m sure they will be fine!

Thorneyholme RC Primary School: Yo prof plant hows it rollin'!!!!????? Cute little bulbs are part of our school now. Prof.P: Great to hear they have settled in.

Nether Kellet Primary School: Today the water froze cool as ice!! Prof.P: Brrrrgh! To get the measurement you need to bring it in to defrost to water.

Diolch

Arthro'r Ardd

What a week! More floods and now turning Frosty!

The highest rain record this week came from Thorneyholme RC Primary School and Westwood CP School both with 100mms of rain. As WestwoodSchool pointed out this week they are very lucky to not live by a river. Some schools who received less rain but did get flooding in their locality.

Nant Y Coed School explained:  We've actually had 23mm of rain since yesterday. There was lots of flooding in the area and some of the teachers couldn't get home at all and some didn’t get home until nearly midnight.

Study the maps to see why. If you click on the option that says 'Terrain' in Google maps you will be able to see all the contours of the mountains and hills. If you follow this link to where Ysgol Nant Y Coed school is situated you will see that when the rain falls in the surrounding area it all collects and runs to  Llandudno Junction area - so if there is very heavy rainfall the area may flood. If you look at the Environment Agency flood map it highlights the areas that suffer from flooding and you will see that the areas around does flood just as the school reported.

Take a look at different areas in your locality and see if you can predict if or why certain areas flood. Then visit the environment agency flood map to see where the areas of high risk are.

This link has some animations about the different factors that cause a flood.

Oakfield Primary asks: Is the rainfall heavy for this time of year? Prof.P: Good question! Our records show that the average rainfall since we began recording are around 150mm of rain in November in Wales. We can't compare this figure until the end of the month but in some places 100mm of rain have fallen in a day! So yes it is high for this time of year. 

Your questions, my answers:

Thorneyholme RC Primary School: The bulb is so cute!!
########## hash tag (no reason at all someone in class is obsessed with hash tags!) See you next week p plant. Thorneyholme xoxo Prof.P: High #Thorneyholme #Prof.P

Ysgol Capelulo: It rained a lot on Thursday but it was very windy so not a lot of rain went into the rain collector, but there was a lot of rain on Thursday night. It also rained a lot on Wednesday night. The temperature on Tuesday was quiet warm. Prof.P: Great recording!

Stanford in the ValePrimary School: What a week.... Floods on Wednesday, Thursday high winds and blue skies Friday!
Stanford Gardening Club Prof.P: Yes a very crazy week of weather!

Stepping StonesShortStaySchool
We have wondered about the rainfall records - we were putting the rain gauge out each morning, but then thought this isn't recording all the rain at night we have had recently? We are now leaving it out all the time in between emptying it at about 2:30 each afternoon. We hope this is ok?  Prof.P: Great, well spotted, I leave mine out so it collects all the rain too then just empty it once a day.

Ysgol Porth Y Felin. Hello P.P we are very amazed about Thursday because of all the floods!!! There aren’t many differences between the temperatures but there’s quite a lot in the rainfall! Happy planting!!!!  Prof.P: Yes so much rain falling some days!

GlyncollenPrimary School
We have had a lot of rain this week and the strong wind blew our water gauge down so we hope our rainfall measurement is accurate. Prof.P: Thanks for letting me know, this can’t be helped sometimes mine falls over too!

St Joseph's Primary School (Penarth) we have been very excited about taking measurements this week. We were interested to see that, so much rain fell on Tuesday night, our car park was flooded! Prof.P: Gosh, I hope none of the cars were flooded, glad you’re enjoying!

Greyfriars RC Primary School
I love the plants there doing very well. Prof.P: Great news Greyfriars!

CadoxtonPrimary School
Friday rainfall could have been more than 50 ml but measurer stopped at 50. Prof.P: Gosh, perhaps you need a bigger rain gauge?

LadybankPrimary School
Problem of people standing on our plants but we are working to get it sorted. Prof.P: Oh dear! I do hope you manage to sort it out – please let me know.

Thanks

Prof.P

Yr wythnos hon wedi gweld llifogydd ar draws llawer o ardaloedd yn y DU - gweler y lluniau yn y dolenni isod. Adroddodd Ysgol Stepaside lifogydd yn uchel mewn sawl ardal.

Rwy'n amau y bydd rhai ysgolion ar gau heddiw ac efallai ddim yn gallu danfon eu cofnodion. Wyf yn gobeithio y bydd pawb yn ddiogel ac yn sych.

Yn fy ngardd cawsom 30mm o law ddydd Mercher ac roedd rhaid i mi achub broga a oedd yn hopian ar hyd ffordd brysur ar fy ffordd adref! Adroddodd Ysgol Harwell 15mm o law a Ysgol Rhydypenau yng Nghaerdydd a Ysdol Balmerino tu allan i Dundee 30mm o law!

• Cymru - http://www.bbc.co.uk/news/uk-wales-20458267
• Yr Alban - http://www.bbc.co.uk/news/uk-scotland-20439824
• Lloegr - http://www.bbc.co.uk/news/uk-england-devon-20441316

Wythnos diwethaf roedd 57 o ysgolion wedi danfon eu cofnodi tywydd - diolch yn fawr i chi gyd!

Astudiwch y cofnodion. Os hoffech gweld faint o law mae pawb wedi cael, dilynwch y ddolen hon ac yna dewiswch yr ysgol yr hoffech ei astudio. Gwnwech yn siwr bod eich cofnodion yn cael eu dangos yn gywir a gadewch i mi wybod os oes unrhyw broblemau.

Eich cwestiynau, fy atebion:

RAF Benson Primary School: We would like to send our records on a Thursday as it is the evening of our gardening club. Prof.P: No problem, doing it like this, but as the web site is set-up to only allow you to send in a week of weather at a time, you will only be able to upload the weather from the week before. Thanks.

Medlar with Wesham CE Primary School: Why aren't our bulbs growing yet we are impatient. Prof.P: they will be growing - but under the ground. Ask your teacher if you could grow one of your spare bulbs in a clear gel so you can watch the roots growing, but you must be patient. If they grew above the soil now they could be harmed by the winter frost.

Ysgol Porth Y Felin: We are interested by the fact that all the temperatures are nearly the same and it only rained on Monday. Prof.P: My temperatures have been fairly similar too, temperature wise it is very mild at the moment. Test if your thermometer definitely working properly?

Westwood CP School: Cold day on Friday! We had a little shower. That is the 1mm of rainfall. Prof.P: great accurate recording Westwood!

Diolch yn fawr

Athro'r Ardd

Wiw! Dyna ddechrau gwych i gofnodi tywydd eleni. Mae pedwar deg chwech o ysgolion wedi danfon cofnodion i mewn ac mae mwy yn dod fel yr wyf deipio! Cafodd y prosiect ei grybwyll hefyd yn y South Wales Echo a'r Oxford Times.

Wiw! Dyna ddechrau gwych i gofnodi tywydd eleni. Mae pedwar deg chwech o ysgolion wedi danfon cofnodion i mewn ac mae mwy yn dod fel yr wyf deipio! Cafodd y prosiect ei grybwyll hefyd yn y South Wales Echo a'r Oxford Times

Os ydych chi erioed wedi meddwl beth yw eich bylbiau yn wneud unwaith mae wedi’i phlannu,  beth am wneud y llyfryn origami bach hwn! Bywyd cudd y bwlb gan Athro'r Ardd. (Fersiwn lliw) (Fersiwn llenwi'r bylchau) (Sut i wneud)

Mae llawer ohonoch wedi anfon sylwadau a chwestiynau - gwelwch fy atebion isod:

Ysgol Nant Y Coed - "We have had rain this week but not enough to measure. We've enjoyed keeping the records this week" Prof.P: "Thanks for the info and delighted to hear you are enjoying being a scientist!"

St Mary's Catholic Primary School - "Hello, we have had no rain this week". Prof. P: "Hi St Mary's - Welcome to the project - keep up the good work!"

Greyfriars RC Primary School - "Hi we are really enjoying this" Prof.P: "So glad you are enjoying!"

Nether Kellet Primary School - "It has been hard to remember to keep track of the bulb project since it's only our first week. We forgot to cheek on Wednesday so we went on the weather forecast. Do you own the museum we are gathering information for? We really enjoyed collecting the weather information and are 'into' the project now!" Prof.P: "Yes I agree it can be tricky to remember in the beginning, good idea to check with your local forecast when you forget, delighted that you are enjoying it now! I don't own the Museum but I work here so I guess it own me ;-) The Museum is owned by the people of Wales, part of my job is to help people understand and enjoy the weird and wonderful collections we have. I'm very lucky!"

Thorneyholme RC Primary School - "We are enjoying growing and looking after our bulbs.
We love your hair-do and your glasses!!" Prof.P: "Thanks no one has ever complimented me on my hair or glasses before - you've made my day! Glad you're enjoying!"

Ysgol Clocaenog - "Diolch am y bylbiau. Mae hi wedi bod yn wythnos dda i'r bylbiau oherwydd dydi hi ddim wedi bod yn rhy oer ac mae hi wedi bwrw glaw. Athro'r Ardd: Dim problem, dwi'n falch i glywed bod y tywydd yn dda i'r bylbiau".

Medlar with Wesham CE Primary School - "Hi Professor plant. We have not yet watered our plants because it has rained a lot. Prof.P: "Yes that is good, it's important that your bulbs don't get too wet or too dry."

Glyncollen Primary School - "Thank you for the bulbs. We are looking forward to when they grow." Prof.P: "You're welcome! You should start to see some growth after Christmas!”

Ysgol Deganwy - "We have moved our pots to the south side of our mobile classroom against a wall. There has been some building work on the previous north side which meant we couldn't put our pots there." Prof.P: Thanks for letting me know. They should get a lot more sun on the South side too.

Henllys CIW Primary - "Rainfall on Thursday 8 November was 0.5 mm; Rainfall on Friday 9 November was 0.1mm." Prof.P: "Thanks for these details - very accurate recording!"

St Joseph's Primary School (Penarth) - "We were interested to see that the temperature remained the same for Wednesday, Thursday and Friday, even though we thought that it felt colder." Prof.P: "That is interesting; sometimes the wind can make it feel colder. It you have two thermometers you could check if they say the same thing."

Westwood CP School - "Cloudy but dry week apart for some rain on Friday. Temperature are not too bad yet but I'm sure worse is to come!" Prof.P: "Thanks for the update and Welcome to the project again this year!"

Stanford in the Vale Primary School - "Dear Professor Plant. First week of observations...Monday really cold with sharp frosts to the ground...then Thursday warm and sunny blue sky's amazing. No rain has been recorded as we have had no rainfall. Best Wishes. Stanford in the Vale Gardening Club." Prof.P: "Thanks for the observations, a real mixture of weather - keep up the good work!"

Diolch

Athro'r Ardd

www.museumwales.ac.uk/scan/bylbiau

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