Bank Soal IPA Kelas 9
Questions and Answers
- 1.
Peristiwa yang terjadi pada pengisian akumulator (aki) merupakan perubahan bentuk energi dari ....
- A.
Energi kimia menjadi energi panas
- B.
Energi kimia menjadi energi listrik
- C.
Energi listrik menjadi energi kimia
- D.
Energi listrik menjadi energi panas
Correct Answer
B. Energi kimia menjadi energi listrikExplanation
Pada pengisian akumulator (aki), energi kimia yang terdapat dalam bahan kimia di dalam aki diubah menjadi energi listrik. Hal ini terjadi karena ketika aki diisi, reaksi kimia antara elektrolit dan elektroda dalam aki menghasilkan aliran elektron, yang merupakan bentuk energi listrik. Oleh karena itu, jawaban yang tepat adalah "energi kimia menjadi energi listrik".Rate this question:
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- 2.
Energi yang berasal dari bahan fosil suatu saat akan habis, maka diperlukan energi alternatif yang berasal dari luar bumi, yaitu ....
- A.
Panas bumi
- B.
Angin
- C.
Matahari
- D.
Air
Correct Answer
C. MatahariExplanation
The explanation for the correct answer, which is "matahari" (sun), is that energy from fossil fuels is finite and will eventually run out. Therefore, alternative energy sources are needed, and one such source is solar energy. The sun provides a constant and renewable source of energy that can be harnessed through solar panels and used to generate electricity.Rate this question:
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- 3.
Penghematan energi sangat penting untuk kelangsungan hidup. Salah satu cara untuk menghemat energi adalah ....
- A.
Menyetrika baju setiap hari
- B.
Saat tidur lampu tetap menyala
- C.
Televisi selalu menyala
- D.
Saat tidur lampu dimatikan
Correct Answer
D. Saat tidur lampu dimatikanExplanation
One way to save energy is by turning off the lights when sleeping. This helps to reduce electricity consumption and conserve energy resources. By doing so, individuals can contribute to the sustainability of energy and promote a more environmentally friendly lifestyle.Rate this question:
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- 4.
Pemain sepak bola menggunakan sepatu bola yang bawahnya dibuat kasar dan banyak tonjolan. Hal ini bertujuan untuk ....
- A.
Mempercepat lari
- B.
Meringankan beban
- C.
Memperbesar gaya gesek
- D.
Mudah menahan bola
Correct Answer
C. Memperbesar gaya gesekExplanation
The rough and protruding surface of football shoes increases the friction between the shoe and the ground. This increased friction allows the player to have better control and stability while running, changing directions, and making quick movements on the field. It also helps in stopping and turning quickly. Therefore, the purpose of having a rough and protruding surface on football shoes is to increase the frictional force, which ultimately enhances the player's ability to maneuver effectively during the game.Rate this question:
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- 5.
Mobil sedan yang mogok dapat bergerak jika didorong. Hal ini membuktikan bahwa gaya mempengaruhi ....
- A.
Benda bergerak menjadi semakin cepat
- B.
Benda bergerak menjadi semakin lambat
- C.
Bentuk benda
- D.
Benda diam menjadi gerak
Correct Answer
D. Benda diam menjadi gerakExplanation
The explanation for the given correct answer is that when a stationary car is pushed, it starts moving. This demonstrates that force can cause an object at rest to start moving, indicating that "benda diam menjadi gerak" (an object at rest starts moving) is the correct answer.Rate this question:
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- 6.
Perubahan energi yang terjadi pada turbin generator adalah ....
- A.
Kalor menjadi listrik
- B.
Listrik menjadi panas
- C.
Gerak menjadi listrik
- D.
Kimia menjadi gas
Correct Answer
C. Gerak menjadi listrikExplanation
The correct answer is "gerak menjadi listrik." This is because a turbine generator converts the kinetic energy of a moving fluid (such as steam or water) into electrical energy. The moving fluid causes the turbine blades to rotate, which in turn rotates the generator's rotor. This rotational motion is then converted into electrical energy by the generator's electromagnetic field.Rate this question:
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- 7.
Cahaya yang merambat di antara dua bidang permukaan yang berbeda kerapatannya akan mengalami ....
- A.
Pemantulan
- B.
Pembiasan
- C.
Penyerapan
- D.
Perambatan lurus
Correct Answer
B. PembiasanExplanation
Cahaya yang merambat di antara dua bidang permukaan yang berbeda kerapatannya akan mengalami pembiasan. Pembiasan terjadi ketika cahaya bergerak dari satu medium ke medium lain dengan kecepatan yang berbeda. Ketika cahaya melewati bidang permukaan yang berbeda kerapatannya, sudut datangannya akan berubah dan cahaya akan membungkuk. Ini disebabkan oleh perbedaan kecepatan cahaya di kedua medium tersebut.Rate this question:
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- 8.
Bunyi merambat paling cepat melalui ....
- A.
Ruang hampa
- B.
Benda cair
- C.
Benda gas
- D.
Benda padat
Correct Answer
D. Benda padatExplanation
Sound travels fastest through solids because the particles in a solid are tightly packed together, allowing the sound waves to easily transfer energy from one particle to the next. In liquids and gases, the particles are more spread out, causing the sound waves to encounter more resistance and slowing down the speed at which they can travel. In a vacuum or empty space, there are no particles for the sound waves to interact with, so they cannot travel at all.Rate this question:
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- 9.
Bunyi yang dapat didengar oleh manusia disebut ....
- A.
Infrasonik
- B.
Audiosonik
- C.
Ultrasonik
- D.
Supersonik
Correct Answer
B. AudiosonikExplanation
The correct answer is "audiosonik" because it refers to sounds that can be heard by humans. "Infrasonik" refers to sounds with frequencies below the range of human hearing, "ultrasonik" refers to sounds with frequencies above the range of human hearing, and "supersonik" refers to speeds greater than the speed of sound.Rate this question:
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- 10.
Suatu benda dikatakan benda gelap jika benda itu ....
- A.
Menyerap cahaya
- B.
Memantulkan cahaya
- C.
Membaurkan cahaya
- D.
Membiaskan cahaya
Correct Answer
A. Menyerap cahayaExplanation
A dark object is one that absorbs light rather than reflecting or scattering it. When an object absorbs light, it means that the light energy is absorbed by the object's molecules and converted into other forms of energy, such as heat. Therefore, the correct answer is "menyerap cahaya" which translates to "absorbs light" in English.Rate this question:
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- 11.
Kehidupan makhluk hidup di bumi akan sengsara jika tidak ada sumber energi yang penting di bumi. Sumber energi panas yang ada di bumi adalah ....
- A.
Lampu neon
- B.
Matahari
- C.
Bulan
- D.
Api
Correct Answer
B. MatahariExplanation
The correct answer is "matahari" because the passage states that the life of living creatures on Earth would suffer if there were no important energy sources on Earth. The passage also mentions that the heat energy source on Earth is the sun, which indicates that the sun is crucial for sustaining life on Earth.Rate this question:
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- 12.
Gelas bekas air es kemudian dituangi air panaas maka gelas itu akan pecah, sebab ....
- A.
Tidak tahan panas
- B.
Rapuh karena panas
- C.
Memuai sebagian
- D.
Mengerut sebagian
Correct Answer
C. Memuai sebagianExplanation
When a glass that was previously filled with cold water is poured with hot water, it will expand partially due to the difference in temperature. This expansion is known as thermal expansion or "memuai sebagian" in Indonesian. The glass may not be able to withstand this expansion and may crack or break as a result.Rate this question:
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- 13.
Pemasangan rel kereta api diberi jarak karena ....
- A.
Rel akan mendatar jika kena dingin
- B.
Rel akan melengkung jika kena dingin
- C.
Rel akan menyusut jika kena panas
- D.
Rel akan memuai jika kena panas
Correct Answer
D. Rel akan memuai jika kena panasExplanation
The correct answer is "rel akan memuai jika kena panas" which means "the rails will expand when exposed to heat." This is because when the temperature increases, the metal rails will expand and become longer. To accommodate this expansion and prevent buckling or bending, a gap is provided between the rails during installation.Rate this question:
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- 14.
Peristiwa angin darat dan angin laut merupakan contoh bentuk perpindahan panas secara ....
- A.
Radiasi
- B.
Konveksi
- C.
Konduksi
- D.
Konstruksi
Correct Answer
B. KonveksiExplanation
The correct answer is konveksi. Angin darat dan angin laut adalah contoh perpindahan panas secara konveksi. Konveksi adalah proses perpindahan panas melalui pergerakan massa fluida, seperti udara atau air, yang terjadi karena perbedaan suhu. Dalam kasus ini, angin darat dan angin laut terjadi karena perbedaan suhu antara daratan dan laut, yang menyebabkan udara panas di daratan naik dan udara dingin di laut turun, menciptakan pergerakan udara yang disebut angin.Rate this question:
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- 15.
Salah satu contoh perpindahan panas secara radiasi adalah ....
- A.
Pegangan ujung sodet terasa panas ketika menggoreng
- B.
Air yang direbus, panasnya merambat ke seluruh isi
- C.
Panci alumunium terasa panas saat merebus
- D.
Panas matahari pada siang hari terasa sampai bumi
Correct Answer
D. Panas matahari pada siang hari terasa sampai bumiExplanation
The correct answer is "panas matahari pada siang hari terasa sampai bumi" because it describes the transfer of heat through radiation. In this case, the heat from the sun is radiated and can be felt on the Earth's surface.Rate this question:
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- 16.
Kegunaan sekring adalah ....
- A.
Alat pengukur arus listrik
- B.
Alat penurun tegangan
- C.
Alat pemutus dan penyambung arus
- D.
Alat pencegah kebakaran
Correct Answer
C. Alat pemutus dan penyambung arusExplanation
The correct answer is "alat pemutus dan penyambung arus" (device for breaking and connecting currents). Sekring (fuse) is a safety device that is designed to protect electrical circuits from excessive current flow. When the current exceeds a certain limit, the fuse will melt and break the circuit, preventing damage to the electrical equipment or potential fire hazards. Once the fault is fixed, the fuse can be replaced to restore the circuit. Thus, sekring acts as both a breaker and connector of electrical currents.Rate this question:
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- 17.
Berikut ini yang bukan merupakan pemanfaatan prinsip magnet dalam kehidupan sehari-hari adalah ....
- A.
Menggerakkan kipas angin
- B.
Membuat kompas
- C.
Membuat bel listrik
- D.
Menggerakkan motor listrik
Correct Answer
A. Menggerakkan kipas anginExplanation
The correct answer is "menggerakkan kipas angin" because the principle of magnet is not utilized in operating a fan. Fans are typically powered by electricity and use the rotation of blades to create air movement, but magnets are not involved in the process.Rate this question:
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- 18.
Pada saat kita melintasi jalan di pegunungan, akan kita lihat jalan yang berkelok-kelok. Hal ini sesuai dengan prinsip ...
- A.
Pengungkit
- B.
Roda berputar
- C.
Katrol
- D.
Bidang miring
Correct Answer
D. Bidang miringExplanation
When we cross a mountain road, we can see that the road is winding. This is in accordance with the principle of an inclined plane. An inclined plane refers to a sloping surface that allows objects to be moved up or down with less force. In the context of the question, the winding road can be considered as an inclined plane because it allows vehicles to ascend or descend the mountain with less effort compared to a straight road.Rate this question:
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- 19.
Lengan manusia merupakan pengungkit jenis ....
- A.
Pertama
- B.
Kedua
- C.
Ketiga
- D.
Keempat
Correct Answer
C. KetigaExplanation
The correct answer is "ketiga" because the phrase "lengan manusia merupakan pengungkit jenis" suggests that the question is asking about the type of lever that the human arm represents. There are three types of levers, and the human arm is an example of a third-class lever, where the effort is applied between the fulcrum (elbow joint) and the load (hand).Rate this question:
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- 20.
Air yang berada di dalam gelas yang dimiringkan akan terlihat ....
- A.
Miring
- B.
Datar
- C.
Tegak
- D.
Tetap
Correct Answer
B. DatarExplanation
When the glass is tilted, the water inside will appear "datar" or level. This is because the surface of the water will adjust itself to be parallel to the base of the glass due to gravity. The water molecules will spread out evenly to achieve equilibrium, creating a flat surface.Rate this question:
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Mar 22, 2023Quiz Edited by
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Sep 14, 2012Quiz Created by
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