Test: Energy-How Things Work - Class 5 MCQ

Electricity plays a vital role in modern life by powering various appliances and machines, such as lights, fans, and computers. This dependency highlights the importance of electricity in our daily routines and industrial processes.

Energy is essential in our daily activities as it enables movement, generates light, produces sound, and alters temperatures. For example, when we turn on a light bulb, energy is converted into light, demonstrating its versatility in everyday life.

Families in these regions cleverly use the body heat of cattle housed on the ground floor to warm their living spaces above. This energy-efficient method reduces the need for additional heating sources, showcasing a sustainable approach to managing warmth.

The energy generated from flowing water is considered a renewable source. This type of energy, often harnessed in hydroelectric systems, does not deplete natural resources and has a minimal environmental impact compared to fossil fuels.

Food is crucial as it provides energy that supports various activities, including movement, play, and work. Just like humans, animals also rely on food for energy to survive and perform daily functions.

The Bhadla Solar Park is one of the largest solar power plants in the world, showcasing the potential of solar energy in India. This facility represents a significant step toward sustainable energy practices, reducing reliance on fossil fuels and contributing to a cleaner environment.

Cooking gas is commonly used in homes for preparing meals. It is a convenient and efficient source of energy, allowing for quick cooking while producing minimal pollution compared to burning wood or coal.

Vaastu Shastra emphasizes aligning buildings with natural energies, such as sunlight and wind, to enhance energy efficiency. Strategic placement of windows and open spaces helps create bright and airy interiors, promoting a comfortable living environment.

While electricity is essential for many functions, it poses risks such as electrical shocks or fires if not used safely. This emphasizes the need for proper safety measures and awareness when handling electrical devices.

Solar energy is highlighted as a major source of clean energy. It can be harnessed using solar panels to generate electricity without producing harmful pollutants, making it an environmentally friendly option.