1.
Berikut ini yang tidak termasuk akibat rotasi bumi adalah ...
Correct Answer
D. Pembagian waktu di bumi
Explanation
The rotation of the Earth causes the phenomena of day and night, which leads to the alternation of day and night. This is known as the "pergantian hari" or the rotation of the Earth on its axis. The tides in the ocean are also influenced by the gravitational forces between the Earth, Moon, and Sun, which is known as "pasang surut air laut". The apparent daily motion of the Sun across the sky is caused by the rotation of the Earth, known as "gerak semu harian matahari". However, the "pembagian waktu di bumi" or the division of time on Earth is not directly caused by the rotation of the Earth, but rather by the establishment of time zones to facilitate communication and coordination across different regions.
2.
Bumi berputar pada sumbunya sebanyak ... dalam 24 kali
Correct Answer
A. 1 kali
Explanation
The correct answer is 1 kali because the question states that the Earth rotates on its axis in a 24-hour period. Therefore, it completes one full rotation or spin on its axis in that time frame.
3.
Perputaran bulan pada porosnya disebut ...
Correct Answer
B. Rotasi
Explanation
The correct answer is "rotasi" because it refers to the rotation of the moon on its axis. Revolusi, on the other hand, refers to the moon's revolution around the Earth. Kala revolusi and kala totasi are not relevant to the question and do not describe the moon's movement on its axis.
4.
Perhitungan kalender Masehi berdasarkan peredaran ....
Correct Answer
D. Bumi mengelilingi matahari
Explanation
The correct answer is "bumi mengelilingi matahari." This is because the calculation of the Gregorian calendar is based on the Earth's orbit around the Sun. The Earth takes approximately 365.25 days to complete one orbit around the Sun, which is why we have a leap year every four years to account for the extra quarter day. This orbit determines the length of a year in the Gregorian calendar.
5.
. Jumlah hari pada tahun kabisat kalender komariah adalah ....a. 366 hari c. 355 harib. 365 hari d. 354 hari
Correct Answer
D. 354 hari
Explanation
The correct answer is 354 hari. This is because a leap year in the Komariah calendar has 354 days, which is shorter than a regular year. In the Komariah calendar, a leap year occurs every 33 years. In this calendar, the length of a year is based on the lunar cycle, which is shorter than the solar cycle. Therefore, a leap year is needed to align the lunar and solar cycles.
6.
Peristiwa terjadinya pasang surut air laut adalah pembuktian adanya gravitasi ....
Correct Answer
B. Bulan
Explanation
The correct answer is "bulan" because the occurrence of tides is a result of the gravitational pull between the moon and the Earth. The moon's gravitational force causes the water on Earth to bulge, creating high tides, while the areas with less gravitational pull experience low tides. The sun also has an influence on tides, but it is much weaker compared to the moon's gravitational force. Therefore, the presence of the moon is the primary reason for the occurrence of tides.
7.
Kala rotasi bulan adalah ....
Correct Answer
A. 24 jam
Explanation
The correct answer is 24 jam. This is because the rotation of the moon takes approximately 24 hours to complete one full rotation on its axis.
8.
Pada tanggal 21 Maret-21 Juni di belahan bumi utara mengalami musim ....
Correct Answer
C. Panas
Explanation
The question states that from March 21 to June 21 in the northern hemisphere, there is a season. The word "panas" means hot in Indonesian. Therefore, the correct answer is "panas" as during this time period, the northern hemisphere experiences the season of summer, which is characterized by hot weather.
9.
. Gerhana bulan terjadi jika kedudukan ....
Correct Answer
C. Bumi ada di antara matahari dan bulan
Explanation
A lunar eclipse occurs when the Earth is positioned between the Sun and the Moon. During this alignment, the Earth's shadow falls on the Moon, causing it to darken or appear reddish in color. Therefore, the correct answer is "bumi ada di antara matahari dan bulan" which translates to "the Earth is positioned between the Sun and the Moon."
10.
Gerhana matahari terjadi karena ....
Correct Answer
B. Bualan di antara matahari dan bumi
Explanation
During a solar eclipse, the moon comes between the sun and the earth, blocking the sunlight and casting a shadow on the earth's surface. This alignment of the sun, moon, and earth causes a solar eclipse.