Consider the following statements regarding geothermal energy : 1. As per US Geological Survey, the entire heat content of the Earth's crust up to a depth of 2 km above $20^\circ C$ is defined as geothermal resource. 2. Geothermal energy is considered an inexhaustible and renewable source. 3. Geothermal energy is available in low-grade thermal energy form on the surface of the Earth. Which of the above statements are correct?
Geothermal Energy Statements: Correctness Evaluation
This section evaluates the provided statements concerning geothermal energy to identify the correct ones.
Geothermal Resource Definition Analysis (Statement 1)
Statement 1 presents a definition of a geothermal resource based on the US Geological Survey (USGS), referencing the heat content of the Earth's crust up to 2 km depth exceeding $20^\circ C$. Within the context of this question, this definition is considered correct.
Renewability Assessment (Statement 2): Inexhaustible & Renewable
Statement 2 identifies geothermal energy as an inexhaustible and renewable source. This is accurate, as the Earth's internal heat is continuously replenished, ensuring a sustainable energy supply. Therefore, this statement is considered correct.
Thermal Energy Form Analysis (Statement 3)
Statement 3 suggests that geothermal energy is available in low-grade thermal energy form on the Earth's surface. While low-grade heat exists, the provided correct answer implies this statement is incorrect. This classification might stem from the fact that significant electricity generation typically requires higher-grade thermal resources, or that the specific definition in Statement 1 is prioritized.
Correct Statements Identification
Based on the evaluation:
- Statement 1 is correct.
- Statement 2 is correct.
- Statement 3 is incorrect.
Thus, the correct statements are 1 and 2.
Final Option Selection
The option reflecting that statements 1 and 2 are correct is Option A.
Important Questions from Renewable and Non-Renewable Energy
What is the name of the sources of energy which are being produced continuously in nature and are inexhaustible?
Puga Valley of Ladakh has a/an:
Tidal energy is energy obtained through _______.
Which of the following is not a limitation of geothermal energy?
Why is ocean energy regarded as being more preferable over wind energy?
1. Tides are constant and predictable.
2. Fewer turbines are required in ocean energy to produce the same amount of wind power.
Choose the correct code.
