Which term describes the method of gathering information about the Earth from space using sensors?

Which term describes the method of gathering information about the Earth from space using sensors?

• A. Quadrat
• B. Rainwater harvesting
• C. Remote sensing
• D. Quota

Answer: (C)

Remote sensing describes gathering information about the Earth from space using sensors on satellites or aircraft. This approach collects data without direct contact, using different parts of the electromagnetic spectrum to create images and measurements of land cover, temperature, vegetation, and more. It can be passive, capturing natural radiation like sunlight reflected from surfaces, or active, where sensors emit signals (such as radar) and measure the return. This makes it ideal for monitoring large areas and changes over time, like deforestation or urban growth. The other terms refer to different ideas: a quadrat is a small ground sampling plot, rainwater harvesting is collecting rainwater for use, and quota is a fixed share or limit.

Remote sensing describes gathering information about the Earth from space using sensors on satellites or aircraft. This approach collects data without direct contact, using different parts of the electromagnetic spectrum to create images and measurements of land cover, temperature, vegetation, and more. It can be passive, capturing natural radiation like sunlight reflected from surfaces, or active, where sensors emit signals (such as radar) and measure the return. This makes it ideal for monitoring large areas and changes over time, like deforestation or urban growth. The other terms refer to different ideas: a quadrat is a small ground sampling plot, rainwater harvesting is collecting rainwater for use, and quota is a fixed share or limit.