Hiâ Cyfeillion Bylbiau!

Rwy'n amau y bydd llawer o'n potiau o dan eira ar gyfer y dyddiau nesaf! Bydd hyn yn golygu y bydd llawer o ysgolion ar gau. Os ydych yn cael eira rhowch nodyn yn yr adran sylwadau pan fyddwch yn anfon eich cofnodion tywydd.

Dilynwch y ddolen hon i weld yr holl gofnodion tywydd sydd wedi cael eu hanfon i'r graddau. Dewiswch ysgol, yna 'tywydd'.

Dyma rai lluniau o fy egin. Byddwch yn gweld bod y rhai wnes i blannu yn hydref 2011 wedi tyfu llawer mwy na'r rhai wnes i blannu hydref 2012.

Os oes gennych egin yn barod, cymerwch olwg ar fy lluniau i helpu gweithio allan beth yw beth.

Dyma fideo sy'n dangos sut y bydd eich egin yn tyfu.

Eich cwestiynau:

St Mary's Catholic Primary School: We have no records for Monday because it was an inset day. Some of our daffodil bulbs have come through the soil. We have taken photographs and will send them by e-mail. Prof.P: I look forward to seeing them St.Mary’s.

Ladybank Primary School: Thank you for our new thermometer! Prof.P: No worries, thanks for letting me know it arrived safely.

Glyncollen Primary School: Our bulbs have started to grow over the holidays. We hope the frost doesn't get to them. Yr.4. Prof.P: Don’t worry year 4, they are quite tough.

SS Philip and James Primary School:
Happy New Year!  A few daffodil shoots are peeping out of the ground and in one or two pots. Quite a few shoots are emerging in the 'Mystery Bulbs' pot and they are a red/green colour compared to the daffodils shoots which are green. Prof.P: How exciting, not seen my mystery bulb shoots yet.

Greyfriars RC Primary School:
Some are sprouting already! All is good. I am really enjoying this project! Prof.P: glad to hear the bulbs are starting to grow and that you are enjoying.

St Joseph's Primary School (Penarth)
Happy New Year Prof.Plant. We have started to notice a few green shoots in some of our pots and are very excited about the plants beginning to grow. We have talked about the weather forecast for next week and think that we may be sending you photos of snow covered pots! (St. Joseph's Primary School, Penarth.) Prof.P: Yes you were right. Some snow in Cardiff but not enough!

Rhydypenau Primary School:
when we got back to school after the Christmas holidays, our rainfall gauge was full, so we must have had a lot of rain in a fortnight. Prof.P: Yes, we had lots of rain over the holidays – a bit too much! Many people had flooding which must have been awful at Christmas.

Henllys CIW Primary:
Some shoots but no flowers. Prof.P: The flowers will come soon.

Auchtertool Primary School:
When we came back from our Christmas break some of our bulbs were showing growth - not only the ones in pots but also some of those we had planted in the ground! Prof.P: Excellent news!

Ysgol Porth Y Felin:
hello p.p the plants are growing quite quickly but we didn't write down Monday because of teacher training. Prof.P: Thanks for letting me know.

Ysgol Nant Y Coed:
This week the bulbs have started to grow, mostly the mystery bulb. The weather was warm at the beginning and at the end it was cold. Prof.P: Great update, Nant Y Coed.

Tynewater Primary School:
We had 50mm of rainfall on Tuesday because we had been on holiday for two weeks and nobody had emptied the rain gauge. Prof.P: Yes, mine was the same. Thanks for noting the reason.

Blwyddyn Newydd Dda - Gwyddonwyr Gwych! Gobeithio chi wedi cael siawns i ymlacio a nawr yn barod i ymchwilio!

Ar yr adeg hon o'r flwyddyn pethau'n dechrau mynd yn gyffrous iawn. Nawr yw'r amser i wylio eich potiau i weld os oes unrhyw beth yn dechrau tyfu. Mae fy egin cennin Pedr eisoes wedi ymddangos! Danfon llun i mi os mae eginech chi wedi dechrau ymddangos.

Gallai gymryd mis arall neu hyd yn oed chwe wythnos tan fy mlodau yn ymddangos. Mae'r cyfan yn dibynnu ar ein tywydd - os yw'n troi'n wirioneddol oer, yna bydd y twf yn arafu. Os bydd yn aros yn gynnes byddant yn tyfu yn gyflymach.

Y cam nesaf... Defnyddiwch y cyflwyniad PowerPoint i ddarganfod sut i gadw cofnodion blodau. Cofiwch fod yn rhaid i bob un ohonoch roi gwybod i mi pan fydd eich blodau ar agor er mwyn derbyn eich Tystysgrif Gwyddonwyr Gwych.

2012 oedd yr ail flwyddyn wlypaf ar gofnod yn y DU a'r gwlypaf erioed yn Lloegr, y Swyddfa Dywydd gyhoeddi.

Mae'r glaw a oedd yn achosi mwy na 8,000 o gartrefi a busnesau i ddioddef llifogydd arwain at gyfanswm o 1,330.7 mm o law ar gyfer y flwyddyn, dim ond 6.6mm byr o'r flwyddyn y DU gwlypaf a gofnodwyd yn 2000 (1337.3mm).

Dadansoddiad gan y Swyddfa Dywydd yn awgrymu y gall y DU yn mynd yn fwy gwlypach fel newid yn yr hinsawdd yn achosi aer cynhesach i gario mwy o dd?r. Dyddiau o law eithafol - glaw disgwyliedig unwaith bob 100 diwrnod - wedi digwydd bob 70 diwrnod yn 2012. Am ragor o wybodaeth am hyn gweler adroddiad hwn gan y Guardian.

Diolch yn fawr

Athro’r Ardd

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