
La Vita delle Stelle
Flashcard
•
Science
•
2nd Grade
•
Easy
Daniela Cipriani
Used 1+ times
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24 questions
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1.
FLASHCARD QUESTION
Front
Qual è la composizione principale del Sole?
Back
Idrogeno e quantità minori di elio.
2.
FLASHCARD QUESTION
Front
Qual è la temperatura superficiale del Sole?
Back
Quasi 6000K.
3.
FLASHCARD QUESTION
Front
Cosa succede ai nuclei degli atomi di idrogeno a temperature superiori a 10 milioni di kelvin?
Back
Collidono e si fondono insieme.
4.
FLASHCARD QUESTION
Front
Cosa si forma dalla fusione di quattro nuclei di idrogeno?
Back
Un nucleo di elio composto da due protoni e due neutroni.
5.
FLASHCARD QUESTION
Front
Come possiamo definire una stella?
Back
Un’enorme sfera di gas caldissimo che produce energia mediante fusione termonucleare.
6.
FLASHCARD QUESTION
Front
Quali sono alcune delle proprietà delle stelle?
Back
Luminosità, colore, temperatura, dimensione, massa e densità.
7.
FLASHCARD QUESTION
Front
Qual è la relazione tra la temperatura superficiale di una stella e il suo colore?
Back
Le stelle molto calde appaiono blu, quelle fredde sono rosse, e quelle con temperatura intermedia sono bianche, gialle e arancioni.
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