Science Quiz Questions Grade 6 PDF

**[Science Quiz Questions Grade 6]** [ ] These are general science questions that are for grade 6 level: **1. What is matter?** - Matter is anything that has mass and occupies space. **2. What are the three states of matter?** - Solid, liquid, and gas. **3. What is an atom?** - The sma...

**[Science Quiz Questions Grade 6]** [ ] These are general science questions that are for grade 6 level: **1. What is matter?** - Matter is anything that has mass and occupies space. **2. What are the three states of matter?** - Solid, liquid, and gas. **3. What is an atom?** - The smallest unit of an element that maintains the properties of that element. **4. What is the periodic table?** - A chart that organizes elements by their chemical properties and atomic number. **5. What is a molecule?** - A group of two or more atoms bonded together. **6. What are elements?** - Substances that consist of only one type of atom. **7. What is a compound?** - A substance made of two or more different types of atoms bonded together. **8. What is a mixture?** - A combination of two or more substances where each keeps its own properties. **9. What is evaporation?** - The process by which liquid turns into a gas. **10. What is condensation?** - The process by which gas turns into a liquid. **11. What is the water cycle?** - The continuous movement of water on, above, and below the surface of the Earth. **12. What are renewable resources?** - Resources that can be replenished naturally over time, like sunlight and wind. **13. What are non-renewable resources?** - Resources that cannot be replenished in a short period of time, like fossil fuels. **14. What is photosynthesis?** - The process by which plants use sunlight to make food from carbon dioxide and water. **15. What is the main source of energy for the Earth?** - The Sun. **16. What is a food chain?** - A series of organisms each dependent on the next as a source of food. **17. What is an ecosystem?** - A community of living organisms and their physical environment interacting as a system. **18. What is the role of decomposers in an ecosystem?** - Decomposers break down dead organisms and recycle nutrients into the soil. **19. What is gravity?** - A force that pulls objects toward the center of the Earth. **20. What is force?** - A push or pull that can cause an object to move, stop, or change direction. **21. What is energy?** - The ability to do work or cause change. **22. What are the types of energy?** - Kinetic, potential, thermal, chemical, and electrical energy. **23. What is friction?** - A force that opposes the motion of an object. **24. What is mass?** - The amount of matter in an object. **25. What is weight?** - The force exerted by gravity on an object's mass. **26. What is volume?** - The amount of space an object occupies. **27. What is density?** - Mass per unit volume of a substance. **28. What are vertebrates?** - Animals with a backbone. **29. What are invertebrates?** - Animals without a backbone. **30. What is a habitat?** - The natural environment where an organism lives. **31. What is biodiversity?** - The variety of life in a particular ecosystem. **32. What are the parts of a plant cell?** - Cell wall, cell membrane, nucleus, chloroplasts, cytoplasm, vacuole. **33. What are the parts of an animal cell?** - Cell membrane, nucleus, cytoplasm, vacuole. **34. What is the function of the nucleus in a cell?** - It controls the activities of the cell and contains DNA. **35. What is the difference between plant and animal cells?** - Plant cells have a cell wall and chloroplasts, while animal cells do not. **36. What is the function of chloroplasts?** - They are responsible for photosynthesis in plant cells. **37. What is respiration?** - The process by which living organisms convert food into energy. **38. What are the layers of the Earth?** - Crust, mantle, outer core, inner core. **39. What is a rock?** - A naturally occurring solid made up of minerals. **40. What are the three types of rocks?** - Igneous, sedimentary, and metamorphic rocks. **41. What is the rock cycle?** - The process by which rocks are formed, broken down, and reformed. **42. What is weathering?** - The breaking down of rocks into smaller pieces by natural forces. **43. What is erosion?** - The movement of rock particles by wind, water, or ice. **44. What are fossils?** - The preserved remains or traces of ancient organisms. **45. What is the scientific method?** - A systematic approach to solving problems and answering questions through observation and experimentation. **46. What is a hypothesis?** - A testable prediction or educated guess. **47. What is an experiment?** - A test conducted to support or refute a hypothesis. **48. What is a variable?** - A factor that can change in an experiment. **49. What is a control group?** - A group in an experiment that does not receive the treatment being tested, used for comparison. **50. What is a chemical reaction?** - A process where substances combine or break apart to form new substances. **51. What is an acid?** - A substance that releases hydrogen ions (H⁺) in water. **52. What is a base?** - A substance that releases hydroxide ions (OH⁻) in water. **53. What is pH scale?** - A scale that measures how acidic or basic a substance is. **54. What is a solution?** - A mixture where one substance is dissolved in another. **55. What is solubility?** - The ability of a substance to dissolve in another substance. **56. What is the law of conservation of mass?** - Mass is neither created nor destroyed in a chemical reaction. **57. What is sound?** - Vibrations that travel through a medium (like air) and can be heard when they reach the ear. **58. What is light?** - A form of energy that travels in waves and can be seen by the human eye. **59. What is reflection?** - The bouncing back of light when it hits a surface. **60. What is refraction?** - The bending of light as it passes from one medium to another. **61. What is a prism?** - A transparent object that separates light into its different colors. **62. What are the primary colors of light?** - Red, green, and blue. **63. What are the layers of the atmosphere?** - Troposphere, stratosphere, mesosphere, thermosphere, exosphere. **64. What is weather?** - The condition of the atmosphere at a particular time and place. **65. What is climate?** - The average weather conditions in a region over a long period of time. **66. What is a mineral?** - A naturally occurring, inorganic solid with a definite chemical composition. **67. What is the most abundant gas in the Earth\'s atmosphere?** - Nitrogen. **68. What is the greenhouse effect?** - The warming of the Earth's surface due to trapped heat in the atmosphere. **69. What is global warming?** - The gradual increase in Earth's temperature due to the buildup of greenhouse gases. **70. What are the organs of the human digestive system?** - Mouth, esophagus, stomach, small intestine, large intestine, liver, pancreas. **71. What is the main function of the digestive system?** - To break down food and absorb nutrients. **72. What is the role of the heart?** - To pump blood throughout the body. **73. What is the circulatory system?** - The system that circulates blood through the body, supplying oxygen and nutrients. **74. What is the respiratory system?** - The system that brings oxygen into the body and removes carbon dioxide. **75. What is the skeletal system?** - The system that provides structure and support to the body. **76. What is a joint?** - A place where two or more bones meet. **77. What is the nervous system?** - The system that sends electrical signals through the body to control movement and senses. **78. What is the main organ of the nervous system?** - The brain. **79. What is the difference between potential and kinetic energy?** - Potential energy is stored energy, while kinetic energy is the energy of motion. **80. What is a lever?** - A simple machine that helps lift or move objects by using a fulcrum. **81. What is a pulley?** - A simple machine that uses a wheel and rope to lift objects. **82. What are renewable energy sources?** - Energy sources that are replenished naturally, such as solar, wind, and hydropower. **83. What is a fossil fuel?** - Non-renewable energy sources formed from the remains of ancient plants and animals, like coal, oil, and natural gas. **84. What is magnetism?** - The force of attraction or repulsion between objects due to the motion of electric charges. **85. What is an electromagnet?** - A magnet created by passing an electric current through a coil of wire. **86. What is electricity?** - The flow of electric charge through a conductor. **87. What is a circuit?** - A path through which electricity flows. **88. What is an insulator?** - A material that does not allow electricity or heat to flow through it easily. **89. What is a conductor?** - A material that allows electricity or heat to flow through it easily. **90. What is a light-year?** - The distance light travels in one year, approximately 9.46 trillion kilometers. **91. What is the Milky Way?** - The galaxy that contains our solar system. **92. What is a solar system?** - A group of planets and other celestial objects that orbit a star. **93. What is the largest planet in our solar system?** - Jupiter. **94. What is a satellite?** - An object that orbits a planet or star. **95. What is a comet?** - A small celestial body made of ice, dust, and rock that orbits the Sun. **96. What is an asteroid?** - A small rocky body orbiting the Sun, mostly found in the asteroid belt between Mars and Jupiter. **97. What is a star?** - A luminous ball of gas, primarily hydrogen and helium, undergoing nuclear fusion. **98. What is a galaxy?** - A system of millions or billions of stars, along with gas and dust, held together by gravity. **99. What is the closest star to Earth?** - The Sun. **100. What is the difference between a planet and a star?** - A planet is a celestial body that orbits a star, while a star generates its own light and heat through nuclear fusion.