
Grymoedd
Authored by Cyfrif YGG Llwynderw
Science
3rd Grade
Used 2+ times

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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Beth yw gwrthiant aer?
Grym sy'n tynnu pethau tuag at y ddaear
Grym sy'n arafu pethau sy'n symud trwy'r aer
Grym sy'n gwneud i bethau lynu at ei gilydd (stick to each other)
Grym sy'n gwneud i bethau arnofio
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pa un o'r gwrthrychau hyn fyddai'n profi'r mwyaf o wrthiant aer wrth gwympo?
Darn o bapur A4
Carreg fach
Pêl fetel
Pensil
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Beth mae ffrithiant yn ei wneud pan fyddwch chi'n ceisio llithro llyfr ar draws bwrdd?
Cyflymu'r llyfr
Arafu'r llyfr
Gwneud y llyfr yn ysgafnach
Gwneud i'r llyfr hedfan
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pa arwyneb fyddai â'r ffrithiant mwyaf?
Iâ
Carped
Gwydr
Metal
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pam rydyn ni'n rhoi olew ar gadwyni (chain) beiciau?
I'w gwneud yn drymach
I gynyddu (increase) ffrithiant
I leihau (reduce) ffrithiant
I'w gwneud yn liwgar
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pa un o'r rhain sy'n enghraifft o ffrithiant ym mywyd bob dydd?
Pêl yn disgyn i'r llawr
Rhwbio eich dwylo gyda'i gilydd i'w cynhesu
Magnet yn glynu at oergell
Dŵr yn berwi
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Beth fyddai'n digwydd os nad oedd ffrithiant rhwng eich esgidiau a'r ddaear?
Byddwch yn cerdded yn gyflymach
Byddwch yn llithro a chwympo
Byddwch yn neidio'n uwch
Byddwch yn teimlo'n drymach
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