Ffurf safonol mewn cyd-destun
Quiz
•
Mathematics
•
9th - 12th Grade
•
Practice Problem
•
Hard
T Wood
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16 questions
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1.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Màs y Ddaear yw 6 x 1024 kg
Màs y Lleuad yw 7 x 1022 kg
Pa un sydd fwyaf trwm?
Y Ddaear
Y Lleuad
2.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Màs y Ddaear yw 6 x 1024 kg
Màs y Lleuad yw 7 x 1022 kg
Beth yw'r gwahaniaeth rhwng eu masau?
5.3 x 1024 kg
5.93 x 1024 kg
593 x 1024 kg
53 x 1024 kg
5.3 x 1022 kg
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Mae ffrindiau yn dadlau am y ffurf safonol, a pha rhif yw'r un mwyaf. Dewisiwch chi y rhif mwyaf:
9.9 x 1015
5 x 1018
8.1 x 10-19
9,000,000,000,000
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Os mae galaeth (galaxy) efo 3 x 1010 seren, a phob un efo màs 2 x 1031 kg, beth fydd cyfanswm màs yr holl sêr?
6 x 10310 kg
5 x 1031 kg
5 x 1041 kg
6 x 1041 kg
5.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Buanedd golau (light speed) yw 3 x 108 metr yr eiliad
Pa mor bell bydd golau yn teithio mewn 1 munud?
9 x 108 metr
1.8 x 108 metr
1.8 x 109 metr
9 x 109 metr
6.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Mae tua 4 x 1011 seren yn y Llwybr Llaethog (Milky Way). Mae tua 1 x 1012 seren yn y galaeth (galaxy) agosaf, sef Andromeda.
Beth yw cyfanswm nifer y sêr y ddwy galaeth?
5 x 1011
1.4 x 1012
5 x 1012
4.1 x 1012
1.4 x 1011
7.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Mae un nanometr (1 nm) yn hafal i 1 x 10-9 metr.
Beth yw 320 nm mewn metrau yn y ffurf safonol?
32 x 10-9 metr
3.2 x 10-9 metr
3.2 x 10-8 metr
3.2 x 10-7 metr
3.2 x 10-11 metr
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