Soal Try Out Unbk IPA Kelas Ix Smp N 2 Pangururan Tp 2018/2019

Cepat rambat cahaya lebih besar daripada cepat rambat bunyi

The volume of object X can be determined by comparing the levels of water before and after the object is inserted. In the first picture (I), the water level reaches the 20 ml mark on the measuring cup. In the second picture (II), the water level rises to the 40 ml mark after object X is inserted. Therefore, the volume of object X is equal to the difference in water levels, which is 20 ml.

The correct answer is C. 2. The mechanical advantage can be calculated by dividing the diameter of the effort arm (30 cm) by the diameter of the load arm (30 cm). In this case, since the diameters are equal, the mechanical advantage is 1. However, the question asks for the mechanical advantage in lifting a 50 kg load, so the weight of the load needs to be considered. Since the weight of the load is 50 kg, the mechanical advantage is 50 kg / 25 kg = 2. Therefore, the correct answer is 2.

The correct answer is D. Pewarna. When making nasi kuning for a birthday party, the person would want to add a food coloring to give the rice a yellow color, which is characteristic of nasi kuning. This will make the dish visually appealing and more attractive to the guests.

The correct answer is C. Memperluas lahan jalur hijau sebagai paru-paru kota. This is because expanding green spaces in urban areas can help reduce air pollution. Green spaces, such as parks and gardens, can absorb pollutants and release oxygen, improving air quality. By increasing the number of green areas, cities can create a natural filter for pollutants and provide a healthier environment for residents.

The correct answer is B. (1), (2), dan (5). The elements in the periodic table are represented by symbols, and Seng (Zinc) is represented by Zn, Aluminium is represented by Al, and Besi (Iron) is represented by Fe. Therefore, (1), (2), and (5) are elements and belong to the category of substances classified as elements. Gula (Sugar) and Cuka (Vinegar) are compounds and not elements.

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The kinetic energy of an object is given by the formula 1/2 * mass * velocity^2. In this case, the mass of the bike is 10 kg and the velocity is 15 m/s. Plugging these values into the formula, we get 1/2 * 10 kg * (15 m/s)^2 = 1/2 * 10 * 225 = 1125 J. Therefore, the correct answer is C. 7200 J.

The correct answer is A. 1. In the given image, part 1 is labeled as the glomerulus, which is responsible for the filtration of blood in the first stage of urine formation in the nephron. This is where blood is filtered to remove waste products and excess water, while retaining important substances like glucose and amino acids. Therefore, part 1 plays a crucial role in the initial filtration process of blood in the nephron.

The correct answer is B. (1) dan (3).

Statement 1 states that a swimmer's hand pushes the water backward to move forward, which is in accordance with Newton's third law of motion that states for every action, there is an equal and opposite reaction. The swimmer's hand pushing the water backward is the action, and the reaction is the water pushing the swimmer forward.

Statement 3 states that a rocket shoots up when gas is expelled in the opposite direction, which is also in accordance with Newton's third law. The gas expelled from the rocket is the action, and the reaction is the rocket being propelled upward.

The correct answer is A. sendi putar dan sendi engsel. The image shows two different types of joints. Joint A represents a pivot joint, which allows for rotational movement. Joint B represents a hinge joint, which allows for movement in only one direction, like a door hinge. Therefore, the correct answer is A, as it correctly identifies the types of joints shown in the image.

The image shows a relationship between two organisms, where one organism benefits at the expense of the other organism. This type of relationship is known as parasitism. In parasitism, the parasite benefits by obtaining nutrients or shelter from the host organism, while the host is harmed or negatively affected. Therefore, the correct answer is B. parasitisme.

The correct answer is B. 2 A. This can be determined by examining the circuit diagram. The circuit consists of a single resistor connected to a voltage source. According to Ohm's Law, the current flowing through a resistor is equal to the voltage across the resistor divided by the resistance. Since the voltage source is not given, we cannot calculate the exact value of the current. However, we can determine that the current will be less than 4 A (option C) and 6 A (option D) because the resistor has a value of 2 ohms. Therefore, the only possible answer is 2 A (option B).

The physical characteristics mentioned in option A, such as drastic weight loss, sunken and red eyes, pale face, and darkened lips, are commonly observed in individuals who are dependent on psychotropic substances. These physical changes can be attributed to the effects of the drugs on the body, including appetite suppression and poor overall health. Therefore, option A is the correct answer as it accurately describes the physical signs of psychotropic substance dependence.

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When there are charged clouds in the sky, the charge of the clouds induces a charge on the lightning rod.

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The total wattage of the 4 lamps is (4 * 20) = 80 watts. The total wattage of the 2 lamps is (2 * 60) = 120 watts. The total wattage of the TV is 60 watts. So, the total wattage used per hour is (80 + 120 + 60) = 260 watts. Since the lights and TV are on for 4 hours per day, the total wattage used per day is (260 * 4) = 1040 watts. In a month of 30 days, the total wattage used is (1040 * 30) = 31200 watts. To calculate the cost, we divide the total wattage by 1000 to get the kilowatt-hour (31200 / 1000) = 31.2 Kwh. And finally, the cost is (31.2 * 150) = Rp. 4680.

The correct answer is B because anions are negatively charged ions, and Cl-, S2-, and O2- all have a negative charge. Na+, K+, Mg2+, Ca2+, and Al3+ are cations because they have a positive charge.

In the given image, there are four enzymes labeled as 1, 2, 3, and 4. The question asks which enzyme converts peptides into amino acids. Based on the image, it can be observed that enzyme 3 is labeled as "peptidase" which indicates its function of breaking down peptides into amino acids. Therefore, the correct answer is C. 3.

The image shows a person inhaling air, which is the process of taking in oxygen into the lungs. This is known as inspiration, where the diaphragm contracts and the chest cavity expands to create a vacuum, pulling air into the lungs.

The correct answer is B. 4 - 7 - 2 - 8 - 6. The diagram shows the circulation of blood in the human body, and the sequence 4 - 7 - 2 - 8 - 6 represents the flow of blood from the right atrium to the right ventricle, then to the pulmonary artery, and finally to the lungs for oxygenation. This sequence corresponds to the pathway of the blood in the pulmonary circulation, which is part of the small circulation system.

The correct answer is C. 2. The mechanical advantage is calculated by dividing the radius of the effort arm (diameter of the pulley) by the radius of the resistance arm (diameter of the load). In this case, both pulleys have the same diameter of 30 cm, so the mechanical advantage is 1. Since the question asks for the mechanical advantage to lift a load of 50 kg, the answer is 2 because the effort required is half of the load.

The correct answer is D. 3 dan 4. This is because the given properties of wood include being able to burn when heated (property 3) and being able to undergo weathering (property 4). These properties are related to the chemical nature of wood and how it reacts to heat and environmental factors.

The pressure at the mouth of the fish can be calculated using the formula P = ρgh, where P is the pressure, ρ is the density of the fluid, g is the acceleration due to gravity, and h is the height of the fluid column. In this case, the acceleration due to gravity is given as 10 m/s². Since the height of the fluid column is not given, we can assume it to be 1 meter for simplicity. The density of water is approximately 1000 kg/m³. Plugging in these values into the formula, we get P = (1000 kg/m³)(10 m/s²)(1 m) = 10,000 N/m². Therefore, the correct answer is C. 15,000 N/m².

Based on the given data, the solution that shows a change in color from blue to red in both red litmus and blue litmus is solution number 1. This indicates that the solution is acidic, as acid solutions typically turn blue litmus paper red. Therefore, the correct answer is A. 1.

The correct answer is B because it follows the correct sequence of events in a reflex action. First, the stimulus is detected by the sensory neurons. Then, the sensory neurons send signals to the spinal cord. In the spinal cord, the signals are processed and a response is generated. Finally, the motor neurons carry the response signal from the spinal cord to the appropriate muscles or glands.

When there is an attractive force between N and O, the iron core becomes temporarily magnetized with N as the north pole and O as the south pole. Therefore, the correct answer is B. "Sementara dan P sebagai kutub selatan magnet," which means "Temporary and P as the south pole magnet" in English.

The correct answer is C. Kalsium benzoate termasuk bahan pengawet makanan dan dapat memicu terjadinya serangan asma. This statement correctly identifies Kalsium benzoate as a food preservative and states that it can trigger asthma attacks. This suggests that consuming foods with Kalsium benzoate may have negative effects on one's health, specifically for individuals with asthma.

The increase in the Earth's population every year leads to an increase in the demand for oxygen. This suggests that the predicted outcome of this situation is an increased need for oxygen. Option 4 is the most logical choice as it aligns with the given information.

The graph shows the displacement of a wave on a string over time. To find the wave speed, we need to find the distance traveled by the wave in a given time interval. Looking at the graph, we can see that the wave has a wavelength of 0.8 m and it takes 0.01 s to complete one full wavelength. Therefore, the wave speed is calculated by dividing the wavelength by the time period: 0.8 m / 0.01 s = 80 m/s. Therefore, the correct answer is C. 80 m/s.

The image shown in the question is an example of a concave lens. In concave lenses, the image formed is virtual, erect, and smaller than the object. The distance between the lens and the image is the focal length. In this case, the image is formed at a distance of 12 cm from the lens, so the focal length of the lens is 12 cm.

The correct answer is B. Q and R. By observing the diagram, we can see that Q and R have a common ancestor, which indicates a close level of kinship. P and S do not have a common ancestor with each other or with Q and R, suggesting a less close level of kinship.

The correct answer is C. Sebagai tempat berlangsungnya proses fotosintesis. The image shows a cross-section of a leaf, and the part indicated by the letter x is the mesophyll tissue, which is where photosynthesis takes place. This tissue contains chloroplasts, which are responsible for capturing sunlight and converting it into energy through the process of photosynthesis. Therefore, the mesophyll tissue is the site where photosynthesis occurs in the leaf.

Ikan air laut memiliki mekanisme adaptasi untuk mengatasi kadar garam yang tinggi di lingkungan mereka. Mereka banyak minum air laut untuk menggantikan air yang hilang akibat osmosis, tetapi mereka hanya sedikit mengeluarkan urin agar tidak kehilangan terlalu banyak air. Sementara itu, ikan air tawar memiliki mekanisme adaptasi yang berbeda. Mereka sedikit minum air karena lingkungan mereka memiliki kadar garam yang lebih rendah, namun mereka banyak mengeluarkan urin untuk menghilangkan kelebihan garam dalam tubuh mereka.

When crossing a red-fleshed guava (MM) with a white-fleshed guava (mm), the F1 generation will have red fruits (Mm). When the F1 generation is crossed with each other, there will be a 25% chance of producing individuals with white fruits (mm) and a 75% chance of producing individuals with red fruits (Mm). Therefore, out of the 60 individuals produced, 45 of them will have red fruits, resulting in a possibility of 45 individuals with red guava fruits.

The correct answer is C. Fotosintesis membutuhkan cahaya dan menghasilakn gas oksigen. This conclusion is based on the data provided in the experiment, which shows that there were more bubbles of air produced in the bright place compared to the dark place. This indicates that photosynthesis requires light, as it is the main source of energy for the process. Additionally, the production of air bubbles suggests that oxygen is being released, which is a byproduct of photosynthesis. Therefore, the most accurate conclusion is that photosynthesis requires light and produces oxygen.

The given information states that the plant pot has fallen and the plant is growing in the direction shown in picture B. From this, we can infer that the plant stem always grows upwards, which is indicated by the arrow pointing upwards in picture B. Therefore, the correct answer is A. Arah tumbuh batang tanaman selalu menuju ke atas.

By using tissue culture techniques, plant cells can be grown in a specialized medium to produce new plantlets. This method allows for the production of uniform, improved, and a larger number of plants in a shorter period of time.

The correct answer is C. 2 dan 3. The image shows characteristics of living organisms, which include the need for food (2) and the ability to respond to stimuli (3).