Q. What is refraction? Top Answer Solution:Refraction is the bending of light when it moves from one material to another. This happens because light changes its speed as it passes through different materials. Each material, like air, water, or glass,…
Q. What are acids and bases? Top Answer Solution:An acid is a substance that tastes sour (like lemon juice), can turn blue litmus paper red, and reacts with some metals to produce bubbles (hydrogen gas). Acids release hydrogen ions (H⁺)…
Q. What is the periodic table? Top Answer Solution:The periodic table is a chart that shows all the chemical elements in an organized way. It is arranged based on atomic number, which tells how many protons an atom has. For example,…
Q. What is a chemical reaction? Top Answer Solution:A chemical reaction happens when two or more substances combine and change into something new. For example, when vinegar and baking soda are mixed, they react to form carbon dioxide bubbles. Another example…
Q. What is the difference between renewable and non-renewable energy? Top Answer Solution:Renewable energy: It comes from natural sources like the sun, wind, and water, which never run out. For example, solar panels use sunlight to produce electricity. Non-renewable energy:…
Q. What is an electric current? Top Answer Solution:Electric current is the flow of tiny particles called electrons through a conductor like a wire. It is similar to water flowing in a pipe. Just as water moves to carry energy,…
Q. What is Ohm’s Law? Top Answer Solution:Ohm’s Law explains the relationship between voltage, current, and resistance in an electric circuit. If you increase the voltage in a circuit, the current will increase too, but if resistance is high, the current…
Q. Why is the sky blue? Top Answer Solution:The sky appears blue because sunlight has many colors, and blue light has the shortest wavelength. When sunlight hits the atmosphere, blue light scatters in all directions by air molecules. That is…
Q. What is the difference between mitosis and meiosis? Top Answer Mitosis Meiosis A type of cell division where one cell splits into two identical cells. It happens in body cells for growth or to heal wounds. For example, your…
Q. What is the human digestive system? Top Answer Solution:The digestive system is a group of organs that break down food into smaller parts so the body can use it for energy and growth. How the digestive system works?1. Mouth:…
