UV
1st Grade
•20 Qs
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UV
Quiz
•
Other
•
1st Grade
•
Practice Problem
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Hard
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Les rayons ultraviolets (UV) ont une longueur d'onde comprise entre :
300 et 400 nm
200 et 400 nm
200 et 300 nm
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Les UV arrivant à la surface de la terre sont les :
UVA
UVB
UVC
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La limite entre UVA et UVB se situe à :
320 nm
220 nm
280 nm
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Le 21 juin à midi, la quantité d'UV reçue est plus importante pour :
Un surfeur à La Baule
Un alpiniste au sommet du Mont Blanc
Un touriste sur le pont d'un bateau à Saint Tropez
5.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Les UVB :
Ont une longueur d'onde plus élevée que les UVA
Ont une longueur d'onde plus courte que les UVA
Sont plus énergétiques que les UVA
Sont moins énergétiques que les UVA
6.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Les UVA sont :
Plus pénétrants que les UVB
Moins pénétrants que les UVB
Absorbés en grande partie par la couche cornée
Capables d'atteindre le derme
7.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Les lampes de bronzage émettent :
Un spectre continu
Un spectre de raies
principalement des UVB
Principalement des UVA
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