Experts have designed these Class 8 Science Notes Chapter 1 Exploring the Investigative World of Science Class 8 Notes for effective learning.
Class 8 Science Chapter 1 Exploring the Investigative World of Science Notes
Class 8 Exploring the Investigative World of Science Notes
Class 8 Science Chapter 1 Notes – Exploring the Investigative World of Science Notes Class 8
→ Investigation: A careful and systematic process of exploring and examining to discover new information or answer questions.
→ Evolution: The gradual change in living organisms over generations, leading to development of new forms.
→ Experiment: A controlled test or procedure carried out to discover something unknown.
→ Observation: The act of noticing and recording something carefully, often using the senses or tools, as a part of scientific study.
→ Investigator: A person who finds answers by asking questions and exploring.
→ Mystery: An unknown event or fact that needs to be solved.
→ Microbes: Tiny organisms, such as bacteria, fungi and viruses, that are too small to see without a microscope.
→ Vaccine: A substance used to stimulate the body’s immune system to recognise the disease and fight against it.
→ Infection: An infection happens when harmful microbes enter the body and start to multiply, causing illness or disease.
→ Electric Current: The flow of electric charge that powers devices and creates effects like heat and magnetism.
→ Force: A push or pull that can change the motion or shape of an object.
→ Electricity: A form of energy that powers devices and flows through wires.
→ Pressure: The amount of force applied on a given area that is important in understanding how fluids and gases behave.
→ Breeze: A soft and gentle wind often felt on pleasant days.
→ Cyclone: A powerful storm with very strong, rotating winds that can bring heavy rain and cause damage.
→ Storm: A rough weather condition with strong winds, and sometimes rain, thunder, or lightning.
→ Particles: Extremely small units that make up all matter – solids, liquids, and gases.
→ Element: A pure substance made of only one kind of atom (like oxygen or gold).
→ Compound: A substance made by chemically combining two or more elements (like water).
→ Mixture: A combination of substances that are not chemically bonded and can be separated physically (like saltwater).
→ Solution: A solution is a mixture where one substance is completely dissolved in another (like salt or sugar dissolved in water).
→ Reflection: When light bounces off a surface, like a mirror.
→ Mirror: A smooth, shiny surface that reflects light and shows a clear image of the object in front of it.
→ Lens: A lens is a piece of transparent material, usually made of glass or plastic, which has curved surfaces and used in glasses and cameras.
→ Corrective Glasses: Special eyeglasses that help people see clearly.
→ Phases of the Moon: The changing shapes of the visible Moon caused by its position relative to the Earth and the Sun.
→ Living Organisms: All plants, animals, and microbes that grow, and respond to their surroundings.
→ Environment: The surroundings in which living and non-living things exist and interact.
→ Ecosystem: A community of living organisms interacting with each other and their environment.
→ Atmosphere: The layer of gases that surrounds the Earth and supports life by providing air and protecting from harmful rays.
→ Ultraviolet Rays: These are a type of invisible light energy that comes mainly from the Sun.
→ Climate Patterns: Long-term weather conditions in a place that help us understand the typical climate of a region.
→ Scientific Principles: A step-by-step process used by scientists to explore observations, ask questions, observe things carefully, test them, and draw conclusions.
→ Systematic Investigation: A structured method of exploring a question or problem, where each step is carefully planned and recorded.