Jika Magnet Digerakkan

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| By Nurdiono
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Nurdiono
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Quizzes Created: 8 | Total Attempts: 6,750
Questions: 15 | Attempts: 1,062

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• 1.

Perhatikan gambar  !Setelah digosok berulang-ulang batang besi AB bersifat magnet bila .....

• A.

A kutub magnet selatan

• B.

A dan B magnetnya sama

• C.

B kutub magnet utara

• D.

A kutub magnet utara

C. B kutub magnet utara
Explanation
When a ferromagnetic material such as iron is repeatedly rubbed, it can become magnetized. In this case, the iron bar AB becomes magnetized with the north pole (N) at point B. This is indicated by the correct answer B, which states that the iron bar AB becomes a north pole magnet.

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• 2.

Perhatikan gambar! Jika magnet digerakkan keluar-masuk kumparan maka jarum voltmeter bergerak menyimpang kekiri-kekanan. Ini menunjukkan adanya ggl pada ujung-ujung kawat.Perhatikan pernyataan berikut.1. Jumlah lilitan                        2. Penampang kawat 3. Gerak magnet      4. Gaya magnetFaktor yang mempengaruhi GGl pada ujung kawat adalah ....

• A.

1,2,3

• B.

2,3,4

• C.

1,3,4

• D.

1,2,4

B. 2,3,4
Explanation
The correct answer is 2,3,4. This is because the factors that affect the induced electromotive force (EMF) at the ends of the wire are the number of turns of the coil (jumlah lilitan), the cross-sectional area of the wire (penampang kawat), and the motion of the magnet (gerak magnet) as well as the magnetic field strength (gaya magnet). These factors determine the strength of the magnetic field and the rate at which the magnetic field lines cut through the wire, thus inducing an EMF.

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• 3.

Salah satu fenomena alam yang disebabkan oleh perputaran bumi mengelilingi matahari adalah ....

• A.

Diameter bumi di katulistiwa lebih panjang dibanding kutub

• B.

Gerak semu harian bendaa alangit dari timur ke barat

• C.

Perubahan kelompok bintang yang tampak dari bumi

• D.

Perbedaan waktu di bumi

C. Perubahan kelompok bintang yang tampak dari bumi
Explanation
The correct answer is "perubahan kelompok bintang yang tampak dari bumi". This is because the rotation of the Earth causes the apparent movement of stars in the night sky. As the Earth rotates on its axis, different constellations become visible at different times of the year. This phenomenon is known as the apparent motion of stars and is a result of the Earth's rotation.

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• 4.

Dalam kehidupan sehari-hari kita sering menggunakan beberapa zat,  yang tergolong ke dalam unsur antara lain ....

• A.

Garam, gula, air

• B.

Garam, gula, karbon

• C.

Karbon, oksigen, hidrogen

• D.

Garam, gula, karbon, oksigen, hidrogen.

C. Karbon, oksigen, hidrogen
Explanation
The correct answer is "Karbon, oksigen, hidrogen." This is because carbon, oxygen, and hydrogen are elements that are commonly found in various substances in our daily lives. Salt and sugar are compounds that contain these elements, but they are not elements themselves. Water is a compound made up of hydrogen and oxygen, but it does not contain carbon. Therefore, the correct answer is the option that lists the elements carbon, oxygen, and hydrogen.

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• 5.

Suatu larutan setelah diidentifikasi menghasilkan data sebagai berikut:Rasanya pahit, dapat menghantarkan listrik, membirukan lakmus merah. Larutan tersebut dapat diprediksikan sebagai larutan ... .

• A.

Asam

• B.

Basa

• C.

Netral

• D.

Garam

B. Basa
Explanation
Based on the given information, the solution has a bitter taste, can conduct electricity, and turns red litmus blue. These are characteristic properties of a base. Therefore, the solution can be predicted to be a base.

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• 6.

Anto melakukan pengamatan terhadap sebuah logam yang berkarat. Anto berusaha menyimpulkan dari peristiwa tersebut. Pernyataan berikut yang sesuai adalah ....

• A.

Pada proses korosi terbentuk zat yang jenisnya baru yaitu karat

• B.

• C.

• D.

Perkaratan atau korosi merupakan peristiwa rusaknya logam maupun non logam oleh pengaruh lingkungan

Explanation
The correct answer states that rusting can only occur on iron metals. This is because rusting is a specific type of corrosion that only affects iron and its alloys. Other metals may undergo different types of corrosion, but rusting specifically refers to the formation of iron oxide on iron surfaces.

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• 7.

Berikut adalah data mengenai komposisi pada  kemasan  makanan: Tepung terigu, tepung tapioka, minyak sayur, perisa ayam, rempah-rempah, pemantap nabati, tartrazin Cl 19140, monosodium glutamate, asam folat, garam, gula, dan bubuk cabe.Manakah zat pewarna sintetis yang terdapat pada kemasan makanan tersebut?

• A.

A. monosodium glutamate

• B.

Tartrazin cl 19140

• C.

Pemantap nabati

• D.

Asam folat

B. Tartrazin cl 19140
Explanation
The correct answer is tartrazin Cl 19140. This is a synthetic food coloring that is commonly used in food packaging. It is often added to give a yellow or orange color to the food product.

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• 8.

Putaw, heroin, alkohol, diazepam, morfin termasuk contoh zat psikotropika yang mempunyai jenis efek depresan, gejala yang tampak pada pemakainya adalah….

• A.

Berperilaku agresif

• B.

Berperilaku hiperaktif

• C.

Berhalusinasi

• D.

Explanation
The given substances, such as Putaw, heroin, alcohol, diazepam, and morfin, are examples of psychotropic substances that have a depressant effect. This means that they slow down the central nervous system, resulting in sedation and decreased mental and physical activity. One of the visible symptoms of using these substances is losing consciousness or being unconscious.

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• 9.

Perhatikan gambar berikut.  Gambar tersebut menunjukan bahwa mahluk hidup mempunyai ciri ….

• A.

Memerlukan cahaya matahari

• B.

• C.

Memerlukan nutrisi

• D.

Tumbuh dan berkembang

C. Memerlukan nutrisi
Explanation
The given image shows a plant with roots in the soil. This indicates that living organisms, like plants, require nutrients from the soil for their growth and development. Nutrients such as minerals and water are essential for the plant's survival and to carry out various metabolic processes. Therefore, the correct answer is "memerlukan nutrisi" (require nutrients).

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• 10.

Perhatikan gambar berikut ini !                    1                                    2                                        3                                   4                                  Kelompok hewan yang bernapas dengan menggunakan paru-paru adalah ….

• A.

1 dan 2

• B.

2 dan 3

• C.

3 dan 4

• D.

4 dan 2

C. 3 dan 4
Explanation
The correct answer is 3 dan 4. This is because animals in groups 3 and 4 are depicted with lungs, which are organs used for respiration. Animals in groups 1 and 2 are shown with gills, which are used for respiration in water. Therefore, the correct answer is 3 dan 4, as these groups represent animals that breathe using lungs.

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• 11.

Interaksi antara lebah yang mengambil nektar dari bunga, sementara kehadiran lebah membantu proses polinasi bunga digolongkan pada simbiosis....

• A.

Komensalisme

• B.

Parasitisme

• C.

Predator

• D.

Mutualisme

D. Mutualisme
Explanation
The interaction between bees collecting nectar from flowers, while the presence of bees helps in the process of flower pollination, is classified as mutualism. In mutualism, both species involved in the interaction benefit from each other's presence and actions. In this case, the bees benefit by obtaining food (nectar) from the flowers, while the flowers benefit from the bees' help in pollination, which allows them to reproduce.

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• 12.

Perhatikan gambar berikut ini: Akibat aktivitas pabrik dengan cerobong asap seperti pada gambar di atas maka akan menimbulkan pencemaran udara di lingkungan sekitarnya. Usaha yang dapat kita lakukan untuk mengurangi pencemaran udara itu adalah ...

• A.

Mengecilkan cerobong asap pabrik

• B.

Melakukan uji emisi gas buangan

• C.

Membuat intalasi pembuangan asap atau gas yang baik

• D.

Mengantikan bahan bakar batu bara dengan gas

C. Membuat intalasi pembuangan asap atau gas yang baik
Explanation
The correct answer suggests that one way to reduce air pollution caused by factory emissions is to create a proper installation for the disposal of smoke or gas. This means that the installation should be designed in a way that effectively captures and removes harmful emissions, preventing them from being released into the surrounding environment. By implementing a well-designed disposal system, the factory can minimize the impact of its emissions on air quality.

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• 13.

Perhatikan grafik berikut!Grafik yang menunjukan hubungan antara kebutuhanan makanan dengan peningkatan populasi manusia disuatu daerah adalah....X: kepadatan populasi manusiaY: kebutuhan makanan

A.
Explanation
Grafik tersebut menunjukkan hubungan yang positif antara kepadatan populasi manusia (X) dan kebutuhan makanan (Y) di suatu daerah. Hal ini dapat dilihat dari garis yang naik dari kiri bawah ke kanan atas, menunjukkan bahwa semakin tinggi kepadatan populasi manusia, semakin tinggi pula kebutuhan makanan. Ini menunjukkan bahwa semakin banyak populasi manusia, semakin besar pula kebutuhan makanan yang harus dipenuhi.

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• 14.

Perhatikan kelainan penyakit berikut!AnemiaVarisesLeukemiaArteriosklerosisHaemofilia Kelainan penyakit yang berhubungan dengan sel darah adalah ….

• A.

1, 2, dan 3

• B.

1, 3 dan 5

• C.

2, 4, dan 5

• D.

3, 4 dan 5

B. 1, 3 dan 5
• 15.

• A.

1 dan 2

• B.

2 dan 3

• C.

3 dan 4

• D.

4 dan 2