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STT1. Explain how the energy we get from food originally came from the sun.
STT2. What is the Law of Conservation of Energy?

Ask by Coles Owen. in the United States
Jan 23,2025

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Energy from Food and the Sun

The energy we get from food comes from the sun. Plants use sunlight to make food through a process called photosynthesis. They take in carbon dioxide and water, and with sunlight, they create glucose and release oxygen. When we eat plants or animals that have eaten plants, we get the energy stored in the glucose. This energy is then used by our bodies for movement and other activities.

Law of Conservation of Energy

The Law of Conservation of Energy says that energy cannot be created or destroyed. It can only change from one form to another. For example, when you eat food, the chemical energy in the food turns into kinetic energy (movement) and thermal energy (heat) in your body. The total amount of energy stays the same before and after this change. This principle helps explain how energy works in different systems, like machines and living things.

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Beyond the Answer

The energy that fuels our bodies comes from the sun’s rays, which plants capture through the process of photosynthesis. These green marvels convert sunlight into chemical energy, storing it in the form of glucose. When we consume plants or animals that have eaten plants, we’re essentially tapping into that original solar energy, making every meal a taste of sunlight!
The Law of Conservation of Energy states that energy cannot be created or destroyed; it can only be transformed from one form to another. For instance, when you eat food, the chemical energy stored in it transforms into kinetic energy as your body moves. So, whether you’re sprinting, studying, or even just sitting, the energy from that last meal keeps your world spinning—literally!

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