
Sistema terra e universo
Authored by Giuseppe Tumbarinu
Science
2nd Grade
Used 2+ times

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30 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
La rotazione giornaliera della sfera celeste:
é reale
é apparente, perché dovuta alla rotazione terrestre
é apparente, perché dovuta alla rotazione del sole
é reale solo di notte
é apparente e avviene in modo opposto nei due emisferi
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Le costellazioni sono costituite da:
stelle apparentemente vicine
pianeti lontani dalla terra
galassie realmente vicine
meteore
stelle realmente vicine
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In un onda elettromagnetica la distanza tra due creste successive è detta:
frequenza
spettro
lunghezza d'onda
velocità
distanza ondulatoria
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
3x 108 km equivalgono a:
1 Anno Luce
1 Unità astronomica
2 Parsec
2 Unità astronomiche
0,5 Anni Luce
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Quante stelle possiamo osservare nella volta celeste?
Circa 3000
Circa 6000
Circa 10000
circa 1000
Circa 50000
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
La luminosità apparente di una stella dipende soprattutto:
dalle sue dimensioni
dalla sua temperatura
dalla sua distanza dalla terra
dalla sua forma
dal suo colore
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Il colore di una stella è indice della sua:
temperatura del nucleo
temperatura superficiale
distanza da noi
magnitudine
composizione chimica
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