5th Class Science

Fundamental Concepts in Science

• The force of attraction between two objects is called gravity. It is a fundamental force that governs the motion of celestial bodies and the behavior of objects on Earth.
• Plants are vital organisms in ecosystems, known for their ability to photosynthesize, convert sunlight into energy, and produce oxygen, which is essential for life.
• The process of elimination of waste products from the body is called excretion. This process is critical for maintaining homeostasis and involves various organs, including the kidneys, liver, and skin.
• Sound travels through a medium, such as air, water, or solids, as vibrations. It requires a substance to carry the sound waves, as there is no sound in a vacuum.
• The force of attraction between the Earth and an object is specifically termed weight. Weight is a measure of the gravitational pull on an object and can vary based on location due to changes in gravitational force.
• Plants make their food by the process of photosynthesis. During this process, they utilize sunlight, carbon dioxide, and water to produce glucose and release oxygen.