Question

the albedo effect has no impact on global temperatures. 1 point true false ocean water has one of the highest albedo values on earth. 1 point true false a positive feedback loop means that an initial change causes effects that make that change stronger. 1 point true false the melting of ice and snow decreases earths overall albedo. 1 point true false

Explanation:

1. The albedo effect significantly impacts global temperatures. High - albedo surfaces reflect more sunlight, cooling the Earth, while low - albedo surfaces absorb more heat, warming it. So, the statement "The albedo effect has no impact on global temperatures" is false.
2. Ocean water has a relatively low albedo compared to ice and snow. It absorbs more sunlight, heating up. So, the statement "Ocean water has one of the highest albedo values on Earth" is false.
3. A positive feedback loop in the climate system means that an initial change causes effects that make that change stronger. For example, melting ice reduces albedo, which leads to more heat absorption and more ice - melting. So, the statement "A positive feedback loop means that an initial change causes effects that make that change stronger" is true.
4. The melting of ice and snow exposes darker surfaces (like ocean or land), which have lower albedo and absorb more sunlight, thus decreasing Earth's overall albedo. So, the statement "The melting of ice and snow decreases Earth's overall albedo" is true.

Answer:

1. False
2. False
3. True
4. True