Corso di ASTRONOMIA DI BASE - 2012

Corso di
ASTRONOMIA DI
BASE - 2012
I S I S T E M I P L A N E TA R I
Skylive – Telescopi Remoti
Esercitazione alla serata numero 11 del Corso di
Astronomia di Base – “Il Sistema Solare”
CORSO DI ASTRONOMIA DI BASE
Esercitazione alla undicesima serata del corso di astronomia di base 2012 di Skylive-123 Stella
LINK UTILI PRIMA DELL’ESERCITAZIONE
Il materiale relativo alla serata, e necessario alle esercitazioni, può essere visionato ai link presenti
sulla pagina ufficiale del corso:
http://www.skylive.it/EventoSerale_Dettagli.aspx?Id=103
IL SISTEMA SOLARE
15/11/2012
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CORSO DI ASTRONOMIA DI BASE
ESERCITAZIONI
1. Indicare quali fattori influiscono sulla presenza di atmosfera di un pianeta.
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IL SISTEMA SOLARE
15/11/2012
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CORSO DI ASTRONOMIA DI BASE
2. Una stella di tipo G2V di sequenza principale. Descrivere le caratteristiche del Sole in
base a questi dati.
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IL SISTEMA SOLARE
15/11/2012
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CORSO DI ASTRONOMIA DI BASE
3. Inclinazioni degli assi nel Sistema Solare. Spiegare il caso di Venere e le motivazioni
della sua rotazione retrograda.
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IL SISTEMA SOLARE
15/11/2012
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CORSO DI ASTRONOMIA DI BASE
4. Eventuali possibili cause per la presenza di asteroidi tra Marte e Giove: indicare
brevemente i possibili processi di formazione.
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IL SISTEMA SOLARE
15/11/2012
5
CORSO DI ASTRONOMIA DI BASE
5. Spiegare la Legge di Titius-Bode
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IL SISTEMA SOLARE
15/11/2012
6
CORSO DI ASTRONOMIA DI BASE
6. Indicare le motivazioni che hanno indotto a declassare Plutone a pianeta nano
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IL SISTEMA SOLARE
15/11/2012
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CORSO DI ASTRONOMIA DI BASE
7. Nube di Oort e Fascia di Edgeworth-Kuiper: indicare le differenze
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IL SISTEMA SOLARE
15/11/2012
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CORSO DI ASTRONOMIA DI BASE
8. Spiegare brevemente da dove può provenire l’acqua terrestre e indicare su quali altri
corpi del sistema solare è stata trovata.
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IL SISTEMA SOLARE
15/11/2012
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CORSO DI ASTRONOMIA DI BASE
9. Indicare le fonti di instabilità nel Sistema Solare con riferimento particolare ai rischi
per la Terra.
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IL SISTEMA SOLARE
15/11/2012
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CORSO DI ASTRONOMIA DI BASE
10. Spiegare brevemente la composizione interna del Sole.
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IL SISTEMA SOLARE
15/11/2012
11
CORSO DI ASTRONOMIA DI BASE
QUESTIONARIO BREVE
1. Mettere in ordine crescente di grandezza i seguenti pianeti: Marte, Mercurio, Giove,
Saturno
 Giove, Saturno, Marte, Mercurio
 Giove, Saturno, Marte, Mercurio
 Mercurio, Marte, Saturno, Giove
2. Il pianeta meno denso del Sistema Solare è:
 Giove
 Saturno
 Urano
3. Il pianeta Cerere fu scoperto grazie a:
 Ricerca di un pianeta a 2,4 UA dal Sole circa
 Interazione gravitazionale con Marte
 Interazione gravitazionale con Giove
4. Anelli planetari sono presenti intorno a:
 Quattro pianeti del Sistema Solare
 Giove, Saturno e Urano
 Giove, Saturno e Nettuno
5. Le lacune di Kirkwood sono:
 Zone di particolare densità nella Fascia degli Asteroidi
 Zone di particolare densità nella Nube di Oort
 Zone che risentono della sincronia indotta dalla rotazione di Giove.
6. Il pianeta con l’atmosfera meno densa nel Sistema Solare è:
 Marte
 Mercurio
 Urano
7. Le comete di lungo periodo derivano da:
 Fascia di Edgeworth-Kuiper
 Fascia principale degli asteroidi
 Nube di Oort
8. La scala Torino mette in relazione:
 Orbita degli asteroidi con orbita terrestre al fine di predire eventuali impatti
 Orbita degli asteroidi vicini con rischio di impatto
 Rischio di impatto e energia cinetica eventualmente liberata dallo stesso
9. I PHA sono caratterizzati da particolari condizioni di:
 Perigeo e magnitudine
 Perigeo e velocità
 Perigeo e inclinazione orbitale
IL SISTEMA SOLARE
15/11/2012
12
CORSO DI ASTRONOMIA DI BASE
10. L’atmosfera terrestre è trasparente a:
 Raggi gamma
 Raggi Infrarossi lontani
 Spettro visibile
IL SISTEMA SOLARE
15/11/2012
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