JST BPS 14 Lecture 01

 1. What is the definition of sound? Sound is a mechanical wave that travels through a medium (such as air, water, or solid objects) by vibrating particles. 2. How does sound travel through different mediums? Sound travels as longitudinal waves, compressing and expanding particles of the medium, and it moves fastest through solids, slower through liquids, and slowest through gases. 3. What is the speed of sound in air at room temperature? The speed of sound in air at 20°C is approximately 343 meters per second (m/s). 4. What factors affect the speed of sound? The speed of sound is influenced by the temperature, density, and elasticity of the medium through which it travels. 5. How does sound differ from light in terms of wave properties? Sound is a mechanical, longitudinal wave, while light is an electromagnetic wave that can travel through a vacuum. 6. What is the relationship between frequency and pitch in sound? Pitch is directly related to the frequency of the sound wave; highe...

  1. What is the basic unit of life? The basic unit of life is the cell. 2. What is the function of the cell membrane? The cell membrane controls the movement of substances in and out of the cell, providing protection and structural support. 3. What are the two main types of cells? The two main types of cells are prokaryotic and eukaryotic cells. 4. What is the difference between prokaryotic and eukaryotic cells? Prokaryotic cells lack a nucleus and membrane-bound organelles, while eukaryotic cells have a nucleus and membrane-bound organelles. 5. What is the role of mitochondria in a cell? Mitochondria are responsible for producing energy in the form of ATP through cellular respiration. 6. What is the function of ribosomes in cells? Ribosomes are responsible for protein synthesis by translating mRNA into proteins. 7. What are the three main parts of a cell? The three main parts of a cell are the nucleus, cytoplasm, and cell membrane. 8. What is the difference between plant and anim...

 1. What is a computer? Answer: A computer is an electronic device that manipulates data, performing arithmetic and logical operations to process information. 2. What is hardware? Answer: Hardware refers to the physical components of a computer, such as the CPU, memory, storage devices, and peripherals. 3. What is software? Answer: Software refers to the programs and applications that run on a computer and perform tasks, such as operating systems, applications, and utilities. 4. What is an operating system? Answer: An operating system is software that manages hardware resources and provides common services for computer programs. 5. What is a CPU? Answer: The CPU (Central Processing Unit) is the brain of the computer, responsible for executing instructions and performing calculations. 6. What is RAM? Answer: RAM (Random Access Memory) is a temporary storage area that holds data and instructions currently in use by the CPU. 7. What is a hard drive? Answer: A hard drive is a storage d...

 Science 1. Q: What is the process of photosynthesis? A: Photosynthesis is the process by which plants make their own food using sunlight, carbon dioxide, and water. 2. Q: What are the three states of matter? A: Solid, liquid, and gas. 3. Q: What is the chemical formula for water? A: H₂O. 4. Q: What is gravity? A: Gravity is the force that pulls objects towards the Earth. 5. Q: What is the largest organ in the human body? A: The skin. 6. Q: What is the boiling point of water? A: 100°C. 7. Q: What is the function of the heart? A: The heart pumps blood throughout the body. 8. Q: What are the main components of the human respiratory system? A: Lungs, trachea, bronchi, and diaphragm. 9. Q: What is the main source of energy for the Earth? A: The Sun. 10. Q: What is the formula for calculating speed? A: Speed = Distance / Time. Math 11. Q: What is 12 × 8? A: 96. 12. Q: What is the perimeter of a rectangle with length 5 cm and width 3 cm? A: 16 cm (Perimeter = 2 × (Length + Width)). 13. Q...

 1. What is a plant? A plant is a living organism that can make its own food through photosynthesis. 2. What are the parts of a plant? The main parts of a plant are the roots, stem, leaves, flowers, and fruits. 3. What is photosynthesis? Photosynthesis is the process by which plants make their food using sunlight, water, and carbon dioxide. 4. What do roots do? Roots anchor the plant in the soil and absorb water and nutrients. 5. What is the function of leaves? Leaves carry out photosynthesis and help in the process of transpiration. 6. What are flowers? Flowers are the reproductive parts of plants that help in the formation of seeds. 7. What is a seed? A seed is a small, hard structure that contains the embryo of a new plant. 8. What is germination? Germination is the process where a seed begins to grow into a new plant. 9. What do animals need to live? Animals need food, water, air, and shelter to survive. 10. What is a habitat? A habitat is the natural environment where an organ...

🔬 General Science Questions and Answers Biology (1–20) 1. Q: What is the basic unit of life? A: The cell. 2. Q: What gas do plants use in photosynthesis? A: Carbon dioxide. 3. Q: What is the powerhouse of the cell? A: Mitochondria. 4. Q: What is the largest organ in the human body? A: The skin. 5. Q: What is the main function of red blood cells? A: To carry oxygen. 6. Q: What vitamin is produced in the skin when exposed to sunlight? A: Vitamin D. 7. Q: Which organ controls the body’s functions? A: The brain. 8. Q: What part of the plant conducts photosynthesis? A: The leaf. 9. Q: Which blood type is a universal donor? A: O negative. 10. Q: What is DNA short for? A: Deoxyribonucleic acid. 11. Q: Which human organ produces insulin? A: The pancreas. 12. Q: What type of organism makes its own food? A: An autotroph. 13. Q: Which body system fights diseases? A: The immune system. 14. Q: What is the scientific name for humans? A: Homo sapiens. 15. Q: What part of the brain controls balance? ...