Online Daily Test Of Science For 7th Grade 5th Standard Competition

The symbol "! " typically represents a warning sign, indicating that something is dangerous or harmful. In this context, the symbol is used to represent the meaning "Beracun" which translates to "Toxic" in English. This suggests that the substance or material associated with this symbol is poisonous and can cause harm if ingested, inhaled, or touched.

The correct answer is 12,5 m/s. This is because speed is calculated by dividing the distance traveled by the time taken. In this case, the athlete runs a distance of 250 meters in 20 seconds. Dividing 250 by 20 gives us a speed of 12.5 meters per second.

The given correct answer is "Korosif". This means that the chemical substance indicated by the symbol beside it is corrosive. Corrosive substances have the ability to cause damage or destruction to materials they come into contact with, particularly through chemical reactions. They can cause corrosion, erosion, or chemical burns on surfaces, and can be harmful to living organisms if ingested or exposed to the skin.

The correct answer is GLB, which stands for Gerak Lurus Beraturan. This term refers to the motion of an object moving in a straight line with a constant velocity. In this type of motion, the object's speed remains constant, and there is no change in its direction. GLB is a fundamental concept in physics and is often used to describe the motion of objects in various scenarios.

Batu mengalami pelapukan adalah gejala alam abiotik karena pelapukan adalah proses alami di mana batu terurai atau rusak akibat paparan faktor non-hidup seperti cuaca, air, angin, atau perubahan suhu. Pelapukan adalah contoh gejala alam abiotik karena tidak melibatkan organisme hidup.

The speed of an object can be calculated by dividing the distance traveled by the time taken. In this case, the object traveled a distance of 48 meters in 4 seconds. Dividing 48 by 4 gives us a speed of 12 meters per second. Therefore, the correct answer is 12 m/s.

Lala berjalan ke arah barat sejauh 20 meter, dan kemudian bergerak kembali ke arah timur sejauh 15 meter. Jarak yang ditempuh oleh Lala adalah total dari jarak ke arah barat dan jarak ke arah timur. Jadi, jarak total yang ditempuh adalah 20 meter + 15 meter = 35 meter.

Based on the information given, Ziskia drives her motorcycle at a speed of 60 km/h. The distance from her house to the mall is 15 km. To calculate the time it takes for her to reach the mall, we can use the formula: time = distance / speed. Therefore, the time it takes for Ziskia to reach the mall is 15 km / 60 km/h = 0.25 hours. Since there are 60 minutes in an hour, 0.25 hours is equal to 15 minutes. If Ziskia wants to arrive at the mall at 07.00, she needs to leave her house 15 minutes before that, which is at 06.45.

The average speed of Kak Irham's journey can be calculated by dividing the total distance traveled by the total time taken. In this case, the total distance traveled is 20 km + 30 km + 30 km = 80 km. The total time taken is 1 hour + 2 hours + 1 hour = 4 hours. Therefore, the average speed is 80 km / 4 hours = 20 km/h.

Bu Rasya berangkat dari kota S pada pukul 07.00 dan menggunakan kendaran dengan kelajuan rata-rata 40 km/jam. Jarak antara kota S dan kota T adalah 110 km. Untuk mencari waktu tiba di kota T, kita dapat menggunakan rumus waktu = jarak / kecepatan. Dalam hal ini, waktu = 110 km / 40 km/jam = 2,75 jam. Karena waktu dihitung dalam jam, kita perlu mengubah 0,75 jam menjadi menit. 0,75 jam x 60 menit/jam = 45 menit. Jadi, Bu Rasya akan tiba di kota T pada pukul 09.45.

The given options list various actions that can cause accidents in a laboratory, except for understanding the functions of the equipment used and paying attention to work safety. This option suggests that having knowledge about the equipment and following safety protocols can help prevent accidents in the laboratory.

The correct answer is 20 m/s because to convert km/h to m/s, we need to divide the value by 3.6. Therefore, 72 km/h divided by 3.6 equals 20 m/s.

Ariel menggunakan sepeda motor dengan kelajuan 60 km/jam. Jarak yang harus ditempuh adalah 15 km. Untuk mencari waktu yang dibutuhkan, kita dapat menggunakan rumus waktu = jarak / kecepatan. Dalam hal ini, waktu = 15 km / 60 km/jam = 0,25 jam. Karena waktu diinginkan dalam menit, kita perlu mengonversi 0,25 jam menjadi menit dengan mengalikan dengan 60. 0,25 jam x 60 menit/jam = 15 menit. Jadi, waktu yang dibutuhkan Ariel untuk sampai ke musolah adalah 15 menit.

The correct answer is "okuler." The explanation for this is that the question is asking for the name of the lens on a microscope that is placed close to the observer's eye. This lens is called the "okuler," also known as the eyepiece lens. The okuler is responsible for magnifying the image produced by the objective lens, allowing the observer to see the specimen in greater detail.

The correct answer is GLBB (Gerak Lurus Beraturan Berubah-ubah). This is because an apple falling from a tree follows a straight path (Gerak Lurus) and its velocity changes continuously (Beraturan Berubah-ubah).

The correct answer is "Revolver." In a microscope, the revolver is the part that holds multiple objective lenses. It allows the user to easily rotate and select the desired objective lens for magnification. The other options mentioned, such as the eyepiece (okuler), fine focus knob (pemutar halus), and coarse focus knob (pemutar kasar), do not directly relate to selecting the objective lens.

When the observation space is limited, it is best to use a concave mirror. A concave mirror has a curved surface that converges light rays, allowing for a wider field of view in a smaller space. This makes it suitable for situations where there is limited space for observation.

Mikroskop yang memiliki 2 lensa okuler dinamakan mikroskop binokuler. Mikroskop binokuler memungkinkan pengamat menggunakan kedua mata untuk melihat objek yang diperbesar, sehingga memberikan pengalaman pengamatan yang lebih nyaman dan akurat. Dengan menggunakan dua lensa okuler, mikroskop binokuler juga memungkinkan pengamat untuk melihat objek dengan kedalaman dan dimensi yang lebih jelas.

The given question asks about the distance traveled by a vehicle moving at a speed of 90 km/h for 70 minutes. To find the distance, we need to convert the time from minutes to hours, which is 70/60 = 1.17 hours. Then, we can use the formula distance = speed × time. Plugging in the values, we get distance = 90 km/h × 1.17 h = 105.3 km. Rounding to the nearest whole number, the correct answer is 105 km.

The correct answer is "Tubus". The tubus is the part of the microscope that connects the eyepiece lens (lensa okuler) with the objective lens (lensa objektif). It allows for the magnified image of the specimen to be viewed through the eyepiece.

The correct answer is "Lemah". This is because when observing an object under a microscope, it is necessary to start with a low magnification power to get a general overview of the specimen. Starting with a weak objective lens allows for a wider field of view and better clarity, making it easier to locate and focus on the specific area of interest before increasing the magnification power.

An object is said to be moving when its distance changes with respect to a reference point. The reference point is a fixed point that is used to measure the object's motion. In this case, the correct answer is "Acuan" which means "reference point" in English. This implies that the object's motion is determined by the change in its distance with respect to a specific reference point.

The correct answer is 20 km/jam because the car travels a total distance of 6 km (4 km + 2 km) in 6 minutes. To convert the time to hours, we divide by 60, giving us 0.1 hours. Therefore, the speed is calculated by dividing the distance by the time: 6 km / 0.1 hours = 60 km/h. However, since the car travels back and forth, we need to divide the speed by 2, resulting in a final speed of 30 km/h.

The correct answer is "Pemutar halus". When the shadow is not clear in a certain magnification, using a fine adjuster or "Pemutar halus" can help to adjust and clarify the shadow. This implies that the fine adjuster allows for precise and small adjustments to enhance the clarity of the shadow.

Oksigen adalah gas yang mudah meledak di udara terbuka. Oksigen adalah komponen yang diperlukan untuk membakar bahan bakar, dan jika terdapat sumber api atau panas yang cukup, oksigen dapat memicu reaksi pembakaran yang cepat dan eksplosif. Ini menjadikan oksigen sebagai gas yang sangat berbahaya jika tidak ditangani dengan hati-hati.

Kelajuan adalah istilah yang digunakan untuk menggambarkan perbandingan antara jarak yang ditempuh oleh suatu benda dengan waktu yang diperlukan untuk menempuh jarak tersebut. Hal ini menunjukkan seberapa cepat atau lambat suatu benda bergerak. Dalam konteks pertanyaan ini, kelajuan adalah jawaban yang tepat karena menjelaskan hubungan antara jarak dan waktu dalam konteks perbandingan.

The correct order of the steps in the scientific method is 5-2-3-4-1. This means that the first step is to formulate the problem, followed by formulating a hypothesis, collecting data, conducting experiments, and finally drawing conclusions. This order ensures that the problem is identified and a hypothesis is formed before any data is collected or experiments are conducted. The conclusions are then drawn based on the data and experiments conducted.

The correct answer is 3 km. This can be determined by multiplying the velocity of the object (25 m/s) by the time it takes to travel (2 minutes). Since 1 km is equal to 1000 m, the distance traveled is 25 m/s * 120 s = 3000 m = 3 km.

Sianida adalah contoh zat kimia yang dapat menimbulkan iritasi. Sianida adalah senyawa yang sangat beracun dan dapat menyebabkan iritasi pada kulit, mata, dan saluran pernapasan jika terpapar. Senyawa ini digunakan dalam industri kimia dan pertanian, dan paparan yang berlebihan dapat menyebabkan keracunan yang serius dan bahkan kematian. Oleh karena itu, sianida dapat dianggap sebagai contoh zat kimia yang menimbulkan iritasi.

When the conclusion is different from the hypothesis, it means that the results do not support the hypothesis.