
Quiz Astronomi
Authored by MUFTI FARDIDIN
Mathematics
1st - 5th Grade
Used 3+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Apa yang dimaksud dengan luminositas dalam konteks astronomi?
Daya yang dipancarkan oleh bintang per satuan luas permukaannya
Energi total yang dipancarkan bintang ke segala arah per detik
Kecerahan bintang yang teramati dari Bumi
Besaran yang sebanding dengan kuadrat jarak bintang dari pengamat
2.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Apa yang dimaksud dengan fluks dalam konteks astronomi?
Laju aliran energi yang dipancarkan bintang ke segala arah
Energi yang diterima di Bumi per satuan luas per satuan waktu (Watt/m²)
Perbandingan luminositas bintang dengan luas permukaannya
Besaran yang berbanding lurus dengan diameter bintang
3.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Manakah satuan SI yang benar untuk flux?
Watt (W)
Newton (N)
Watt per meter persegi (W/m²)
Joule (J)
4.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Manakah satuan SI yang benar untuk luminositas?
Watt (W)
Joule (J)
Watt per meter persegi (W/m²)
Newton (N)
5.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Sesuai hukum Stefan-Boltzmann, luminositas suatu bintang sebanding dengan...
R . T
R2 . T4
R3 . T
R . T2
6.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Jika luminositas bintang tetap, tetapi jarak bintang dari pengamat bertambah dua kali lipat, maka flux yang diterima akan...
Tetap
Bertambah dua kali lipat
Berkurang dua kali lipat
Berkurang empat kali lipat
Answer explanation
menggunakan rumus tersebut, maka jika d menjadi 2x, maka flux akan menjadi 1/4
7.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Sebuah bintang memiliki luminositas sama dengan Matahari, tetapi terlihat 25 kali lebih redup. Maka jarak bintang tersebut dari Bumi adalah...
2 AU
5 AU
25 AU
125 AU
Answer explanation
Karena F ~ 1/d2 maka d = √25 = 5
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