Beth sy'n digwydd i symudiad gwrthrych wrth i ffrithiant gynyddu?

Ffrithiant

Quiz
•
Physics
•
6th - 8th Grade
•
Hard
E Evans
Used 16+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Mae'n cyflymu
Mae'n arafu
Mae'n aros ar yr un cyflymder
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pa sylwedd sydd a'r ffrithiant isaf?
Heol tarmac
Heol wlyb
Heol rhewllyd
Heol gerrig mân
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sut mae hofranlong yn lleihau'r ffrithiant rhwng y llong a'r llawr?
Mae gwely aer yn lleihau faint o ronynnau sy'n crafu heibio'i gilydd
Mae'n achosi'r gwrthiant aer i gynyddu
Mae'n pwmpio aer i mewn i'r dŵr i leihau'r dwysedd
Mae'n gwneud y llong yn ysgafnach wrth ychwanegu aer
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Beth yw pwrpas iraid?
Lleihau ffrithiant
Cynyddu ffrithiant
Actio fel glud
Oeri'r sylwedd
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pa fath o egni caiff ei ryddhau pan mae llawer o ffrithiant?
gwres
potensial elastig
niwclear
trydanol
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Beth sy'n achosi ffrithiant?
arwynebau'n crafu
mas sylweddau
gwrthdaro gronynnau aer
effaith disgyrchiant
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pa sylwedd sydd a'r ffrithiant uchaf?
Heol tarmac
Heol wlyb
Heol rhewllyd
Heol gerrig mân
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