Kuis Astronomi
Quiz
•
Mathematics, Science, Physics
•
10th - 12th Grade
•
Practice Problem
•
Hard
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10 questions
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1.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
A star is located at a distance of 5,1 parsec. 1 parsec is equal to 3,26 light years. One light year is the distance travelled by light in a year. If the light speed is 300.000 km/seconds, what is the distance of the star?
2.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Berapakah jarak yang ditempuh Bumi dalam peredarannya mengelilingi Matahari setiap hari? Anggap Matahari tidak bergerak, dan Bumi mengelilingi Matahari dalam lintasan lingkaran dengan jari-jari 150 juta km.
258 juta km
25,8 juta km
2,58 juta km
258000 km
25800 km
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Pada bulan Januari, Bumi paling dekat dari Matahari (yaitu sekitar 147 juta km), dan pada bulan Juli, Bumi paling jauh dari Matahari (152 juta km). Berapakah perbandingan percepatan gravitasi Matahari yang dirasakan Bumi antara saat perihelion dan aphelion?
gper : gap = 1 : 0,935
gper : gap = 1 : 0,967
gper : gap = 1 : 1,034
gper : gap = 1 : 1,069
gper : gap = 1 : 1,191
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Jika radius orbit Bumi mengelilingi Matahari menjadi dua kali lebih besar daripada sekarang, maka satu kali mengorbit, Bumi memerlukan waktu
sekitar dua kali lebih pendek.
sekitar dua kali lebih panjang.
sekitar tiga kali lebih panjang.
sekitar tiga kali lebih pendek.
kira-kira sama dengan sekarang.
5.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Sebuah asteroid mengelilingi Matahari dalam orbit elips dengan setengah sumbu panjang orbit 3 SA dan eksentrisitas 0,9. Berapakah kecepatan minimal asteroid itu agar dapat lepas dari sistem Tata Surya? (Diketahui massa Matahari M = kg, konstanta gravitasi G = N , 1 SA = 149597870700 m)
15640 m/detik
16640 m/detik
17640 m/detik
18640 m/detik
19640 m/detik
6.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
If the inertia moment of a solid body with spherical shape is given by ⅖ , what is the angular momentum of Earth’s rotation? Earth’s mass is kg, and Earth’s radius is 6.378 km. (The period of Earth's rotation is 23,56 hours)
7.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Diketahui massa Matahari sebesar 1,989 × kg, dan jejari Bumi sebesar 6.378 km. Suatu bintang Katai Putih berbentuk bola sempurna, mempunyai massa 1 massa Matahari dan jejarinya 1,5 jejari Bumi. Berapakah percepatan gravitasi pada bintang ini?
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