Rocks exposed as glaciers melt absorbs more energy than it reflects

TRUE or FALSE

Please help me. This question is gonna be in my test tomorrow

please can you answer my question? i need help.

TRUE. When glaciers melt and expose rocks, the rocks generally absorb more energy from the sun than they reflect. This is because rocks have a darker color and lower albedo compared to ice, which means they absorb more sunlight and heat up more. The absorbed energy leads to a positive feedback loop, as the warmer rocks further melt the surrounding ice, which in turn exposes more rocks and leads to more energy absorption.

To determine if the statement is true or false, we need to understand the concept of albedo and how it relates to melting glaciers and rocks.

Albedo refers to the reflective properties of a surface. It is measured on a scale from 0 to 1, where 0 indicates completely absorbing all incoming energy (black surface) and 1 indicates reflecting all incoming energy (white surface).

When glaciers melt, bare rocks are exposed. The albedo of rocks is generally lower than that of ice or snow, which have high albedo values due to their reflective properties. Lower albedo means that the rocks absorb more energy from the Sun compared to ice or snow, which reflects a significant amount of incoming energy. Therefore, as glaciers melt and expose rocks, the rocks will tend to absorb more energy than they reflect.

Hence, the statement "Rocks exposed as glaciers melt absorbs more energy than it reflects" is TRUE.

It's important to understand the underlying concept and logic behind such questions, as this will help you on your tests and exams. Remember, albedo and its relationship to reflection and absorption of energy are key factors to consider in questions like this. Good luck with your test!