Soal IPA Kelas 4 Uts Genap

Ketika dua benda digesekkan, energi kinetik dari gerakan gesekan akan diubah menjadi energi panas. Proses ini disebut dengan gesekan. Gesekan antara dua benda akan menghasilkan panas karena adanya gaya gesek yang menghasilkan energi panas akibat gesekan molekul-molekul benda yang saling bersentuhan. Jadi, menjawab panas adalah jawaban yang tepat karena gesekan antara dua benda akan menimbulkan panas.

The correct answer is "kompor listrik". This is because "kompor listrik" refers to a stove that uses electricity as its source of energy. The other options, "kompor gas", "kompor minyak", and "kompor sumbu" refer to stoves that use gas, oil, and wick, respectively, as their sources of energy.

The correct answer is "matahari" because it is the largest source of energy in the sky. The sun is a star that emits light and heat, providing energy to sustain life on Earth. It is much larger and more powerful than any other celestial body in our solar system, including the moon, planets, and Earth itself. Its energy is generated through nuclear fusion, where hydrogen atoms combine to form helium, releasing a tremendous amount of energy in the process.

The small paku-paku can stick to the end of the scissors because of the magnetic force.

A selang (hose) is used to connect the gas cylinder with the stove, allowing the gas to flow and ignite. It is a flexible tube that is designed to withstand the pressure of the gas and is made of materials that are resistant to heat and corrosion. The selang ensures a safe and efficient transfer of gas from the cylinder to the stove, enabling the gas to ignite and provide heat for cooking.

Gaya adalah tarikan dan dorongan karena tarikan adalah gaya yang bekerja ketika dua objek saling menarik satu sama lain, sedangkan dorongan adalah gaya yang bekerja ketika dua objek saling mendorong satu sama lain. Keduanya merupakan jenis gaya yang timbul akibat interaksi antara dua benda dan memiliki arah dan besaran yang dapat mempengaruhi gerakan atau keadaan benda tersebut.

The correct answer is "gaya gravitasi." When an object is thrown upwards, it eventually falls back down due to the force of gravity. Gravity is a force that pulls objects towards the center of the Earth. This force is responsible for keeping objects grounded and causing them to fall when thrown upwards. Therefore, the fact that objects fall back down when thrown upwards demonstrates the presence of the force of gravity.

Panas dapat terjadi karena adanya sumber panas. Sumber panas dapat berupa benda-benda yang memiliki suhu tinggi, seperti api, listrik, atau benda-benda yang menghasilkan panas akibat reaksi kimia. Ketika sumber panas berinteraksi dengan suatu objek atau lingkungan, energi panas akan ditransfer dari sumber panas ke objek tersebut, menyebabkan peningkatan suhu dan terjadinya panas.

The correct answer is minyak tanah. This is because minyak tanah is commonly used as fuel for wick stoves. Wick stoves work by soaking the wick in the fuel, which is then ignited to produce a flame for cooking or heating purposes. Bensin, batu bara, and solar are not typically used as fuels for wick stoves.

To perform a force, energy is required. Energy is the capacity to do work or cause a change. In order to exert a force on an object, one needs to transfer energy to that object. This energy can be in the form of mechanical energy, such as kinetic or potential energy, or other forms of energy like thermal or electrical energy. Therefore, energy is necessary to apply a force.

When an object is pulled to the left and to the right, if the pull to the left is stronger than the pull to the right, the object will move to the left.

A dinamometer is a tool used to measure force or weight. It is commonly used in physics and engineering to determine the amount of force applied to an object. Unlike a spedometer, which measures speed, a barometer, which measures atmospheric pressure, and a termometer, which measures temperature, a dinamometer specifically measures force. Therefore, a dinamometer is the correct tool for measuring force or weight.

Mobil dapat bergerak karena adanya gaya mesin. Mesin pada mobil menghasilkan tenaga yang diperlukan untuk menggerakkan roda mobil. Mesin ini biasanya menggunakan bahan bakar seperti bensin atau diesel untuk menghasilkan tenaga melalui pembakaran internal. Gaya mesin ini kemudian ditransfer melalui sistem transmisi ke roda mobil, yang menghasilkan gerakan dan membuat mobil dapat bergerak.

The correct answer is "gaya pegas" because when an arrow is released from a bow, it is propelled forward due to the elastic potential energy stored in the bowstring. The bowstring acts like a spring, and when it is released, it exerts a force on the arrow, causing it to move forward. This force is known as the spring force or the force exerted by a stretched or compressed spring.

The correct answer is newton because the unit of force is measured in newtons. Gaya is the Indonesian word for force, and newton is the standard unit used to quantify force in the International System of Units (SI). Watt is the unit of power, joule is the unit of energy, and kalori is the unit of heat. Therefore, newton is the appropriate unit to express force.

Es mencair bukanlah peristiwa yang terjadi karena gaya. Es mencair adalah perubahan fase dari es yang terjadi karena kenaikan suhu. Gaya sendiri adalah interaksi antara dua objek yang dapat menyebabkan perubahan dalam kecepatan, arah, atau bentuk objek tersebut. Pembuatan pisau dari besi melibatkan penerapan gaya untuk membentuk dan memotong besi. Pesawat terbang lepas landas melibatkan gaya dorong untuk mengatasi gaya gravitasi. Pembuatan patung dari tanah liat melibatkan gaya untuk membentuk dan mengubah bentuk tanah liat.

Pancaran cahaya matahari disebut radiasi. Radiasi adalah proses penyebaran energi dalam bentuk gelombang elektromagnetik dari sumbernya, dalam hal ini adalah matahari. Cahaya matahari terdiri dari berbagai panjang gelombang yang mencakup spektrum elektromagnetik, termasuk sinar ultraviolet, sinar tampak, dan sinar inframerah. Radiasi matahari sangat penting bagi kehidupan di Bumi, karena memberikan energi yang dibutuhkan oleh tanaman dalam proses fotosintesis dan juga berperan dalam siklus air dan cuaca.

Bunyi yang kekerapan kurang dari 20 getaran per detik disebut infrasonik. Infrasonik adalah frekuensi bunyi yang terlalu rendah untuk didengar oleh telinga manusia. Bunyi infrasonik sering dihasilkan oleh fenomena alam seperti gempa bumi atau badai.

When pulling a block on rough ground, the frictional force between the block and the ground opposes the motion. This frictional force is known as the force of friction or "gaya gesek" in Indonesian. It makes the block feel heavier and more difficult to move. The rough surface increases the friction, making it harder to overcome and resulting in a greater perceived weight of the block. Therefore, the correct answer is gaya gesek.

Bola menggelinding tidak terjadi karena gaya gravitasi bumi. Bola menggelinding terjadi karena adanya gaya gesekan antara bola dan permukaan tempat bola tersebut menggelinding. Gaya gravitasi bumi hanya mempengaruhi gerakan vertikal benda, sedangkan gerakan horizontal seperti menggelinding dipengaruhi oleh gaya gesekan.

When an object is heated, it undergoes a physical change in its form or state. This change is known as a change in the object's physical properties. Heating causes the particles in the object to gain energy and move faster, resulting in the object's molecules vibrating or colliding more vigorously. This increased molecular motion leads to a change in the object's physical state, such as a solid melting into a liquid or a liquid evaporating into a gas. Therefore, heating is a factor that can cause an object to change its form or state, making it the correct answer in this context.

When a player kicks a ball, the ball is propelled forward due to the force exerted by the player's muscles, particularly the leg muscles. This force generated by the muscles causes the ball to be thrown or propelled in the desired direction. Therefore, the correct answer is "otot" (muscles).

The correct answer is "gaya gesek". Gaya gesek, or frictional force, is not a factor that causes a paper airplane to glide in the air. The other options, such as hand thrust, air resistance, and gravity, all play a role in the flight of a paper airplane.

The correct answer is "benda ditarik dengan tali". This is because the question asks for the cause of friction, and the other options all contribute to the presence of friction. Rough surfaces of objects and floors increase friction because they create more contact points for the objects to interact with. When an object is pressed harder against a surface, the force of friction also increases. However, when an object is pulled with a rope, it does not directly affect the friction between the object and the surface it is on.

Konduksi adalah perpindahan panas melalui suatu zat tanpa disertai perpindahan partikel zat. Ini terjadi ketika partikel-partikel dalam zat saling bertumbukan dan menyebabkan energi termal berpindah dari partikel yang lebih panas ke partikel yang lebih dingin. Dalam konduksi, panas dapat berpindah melalui zat padat, cair, atau gas. Radiasi adalah perpindahan panas melalui gelombang elektromagnetik, sedangkan konveksi melibatkan perpindahan panas melalui pergerakan massa fluida. Hibernasi tidak berkaitan dengan perpindahan panas.