
Le stelle
Authored by Enrica Sanavio
Science
1st Grade
Used 202+ times

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14 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Le stelle vengono studiate con
telescopi a riflessione
spettrografi / spettroscopi
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Le stelle ci appaiono di colori diversi in base a:
temperatura di colore
massa
distanza dalla terra
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Il Sole è una stella di dimensioni (massa)
piccola
media
grande
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Nella scala di luminosità assoluta: una stella classificata di luminosità -1 è
più luminosa di una stella con valore +2
meno luminosa di una stella con valore +2
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Una stella di massa maggiore si consuma
prima
dopo
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Le reazioni causate dalla elevata temperature nel nucleo della stella e che portano alla formazione della maggior parte degli elementi chimici esistenti nell'universo sono reazioni di
fusione nucleare
fissione nucleare
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Nella stadio evolutivo iniziale il gas presente nella stella è
Idrogeno
elio
ossigeno
azoto
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