1.
Sesuatu yang dapat diukur dan dinyatakan dengan angka dan satuan disebut ....
Correct Answer
A. Besaran
Explanation
The correct answer is "Besaran" because it is the only option that refers to something that can be measured and expressed in numbers and units. The other options, "Satuan," "Harga," and "Pokok," do not specifically indicate something that can be measured.
2.
Di bawah ini yang merupakan satuan baku adalah ....
Correct Answer
B. M, gram, liter
Explanation
The correct answer is m, gram, liter. This is because meters (m), grams (gram), and liters (liter) are all standard units of measurement in the metric system. They are widely used and recognized internationally for measuring length, mass, and volume, respectively.
3.
Besaran turunan di bawah ini yang satuannya diturunkan dari besaran pokok panjang adalah ....
Correct Answer
C. Luas dan volume
Explanation
The correct answer is "luas dan volume." Luas (area) and volume are derived quantities that are derived from the fundamental quantity of length. Area is measured in square units (e.g. square meters) and is derived by multiplying length by length. Volume is measured in cubic units (e.g. cubic meters) and is derived by multiplying length by length by length. Therefore, the units of area and volume are derived from the fundamental unit of length.
4.
Pasangan yang benar antara besaran dan satuannya adalah ....
Correct Answer
C. Kecepatan - m/s
Explanation
The correct answer is kecepatan - m/s because kecepatan is a measure of how quickly an object is moving, and the unit m/s stands for meters per second, which is a commonly used unit for measuring speed or velocity.
5.
Seutas tali panjangnya 15 dam disambung dengan tali yang panjangnya 2000 cm. Panjang tali tersebut sekarang adalah ....
Correct Answer
B. 170 m
Explanation
The given question provides information about two ropes, one with a length of 15 dam and the other with a length of 2000 cm. To find the total length of the ropes after they are connected, we need to convert the length of the first rope from dam to cm. 1 dam is equal to 1000 cm, so 15 dam is equal to 15,000 cm. Adding the lengths of both ropes, we get a total length of 17,000 cm, which is equal to 170 m. Therefore, the correct answer is 170 m.
6.
Sebuah balok berukuran panjang 10 dm lebar 50 mm dan tinggi 2 cm. Volumenya adalah ...
Correct Answer
B. 1.000
Explanation
The volume of a rectangular prism is calculated by multiplying its length, width, and height. In this case, the length is given as 10 dm, which is equal to 100 cm. The width is given as 50 mm, which is equal to 5 cm. And the height is given as 2 cm. Therefore, the volume can be calculated as 100 cm * 5 cm * 2 cm = 1000 cm³. Since 1 dm³ is equal to 1000 cm³, the volume is equal to 1 dm³ or 1,000.
7.
Dari sebuah pengukuran, massa sebuah benda 50 mg. Massa benda itu sama dengan ....
Correct Answer
B. 5 x «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«msup»«mn»10«/mn»«mrow»«mo»-«/mo»«mn»2«/mn»«/mrow»«/msup»«/math»
Explanation
The given question states that the mass of an object is 50 mg. The answer provided is 5 x 10^-2. In scientific notation, 10^-2 represents the decimal point being moved two places to the left, resulting in a smaller number. Therefore, multiplying 5 by 10^-2 gives us a value of 0.05, which is equivalent to 50 mg.
8.
Empat buah benda A, B, C dan D massanya berturut-turut adalah 20 kg, 35.000 gram, 0,03 kwintal dan 0,0025 ton. Urutan massa keempat benda mulai dari yang terbesar adalah ....
Correct Answer
B. B - A - C - D
Explanation
The correct answer is B - A - C - D. The mass of object A is given in kilograms, which is the largest unit of mass among the options. Object B has a mass of 35,000 grams, which is smaller than the mass of object A. Object C has a mass of 0.03 quintal, which is smaller than the mass of object B. Object D has a mass of 0.0025 ton, which is the smallest mass among the options. Therefore, the correct order from largest to smallest mass is B - A - C - D.
9.
Penulisan yang benar dengan menggunakan awalan yang sesuai untuk 0,0000072 ampere adalah ....
Correct Answer
D. 7,2 mikro ampere
Explanation
The correct answer is 7,2 mikro ampere. The prefix "mikro" is used to represent one millionth of a unit, so 7,2 mikro ampere means 7,2 millionths of an ampere.
10.
Sebuah mobil melaju dengan kecepatan 25 m/s. Kelajuan tersebut sama dengan ....
Correct Answer
D. 90 km/jam
Explanation
The correct answer is 90 km/jam because to convert the speed from m/s to km/h, we need to multiply it by 3.6. Therefore, 25 m/s x 3.6 = 90 km/h.