Earth Resources and Energy Origin

The question asks to identify the form of energy that is an exception, meaning it is *not* obtained from resources on Earth. We use and consume many things derived from Earth's natural resources.

Analyzing Energy Sources

Let's examine the origin of each energy type mentioned:

• Energy from water (Hydroelectric power): This energy is derived from the movement of water, primarily utilizing rivers and dams. Water is a resource found on Earth.
• Energy from wind (Wind power): Wind is the movement of air in Earth's atmosphere. While atmospheric patterns are influenced by solar energy, wind itself is an atmospheric phenomenon on Earth.
• Energy from friction: Friction is a force that opposes motion when surfaces rub against each other. This is a physical process occurring on Earth.
• Energy from the sun (Solar power): This energy comes directly from the sun, a celestial body external to Earth. While it powers many Earth-based processes (like wind and water cycles), its primary source is not an Earth-based resource itself.

Conclusion on Energy Origin

Comparing the options, energy derived directly from the sun is the only one listed that is not obtained from resources *on* this Earth. Water, wind, and the phenomena causing friction are all fundamentally linked to Earth's systems and materials.

Therefore, the energy source obtained from outside Earth is solar energy.