# Ice-Albedo Feedback Loop Pre-Screener

**Standards Alignment:**
*   **Performance Expectation:** HS-ESS2-2

Before beginning the [Ice-Albedo Feedback Loop](IceAlbedoFeedback.html) simulation task, complete this pre-screener to check your understanding of the foundational concepts.

## Questions

1.  **What does the term "albedo" refer to in Earth science?**
    *   A) The amount of greenhouse gases in the atmosphere.
    *   B) The reflectivity of Earth's surface.
    *   C) The temperature of the ocean water.
    *   D) The speed at which glaciers move.

2.  **Which of the following surfaces has the HIGHEST albedo?**
    *   A) Asphalt (blacktop)
    *   B) Ocean water
    *   C) Forest canopy
    *   D) Fresh snow and ice

3.  **If Earth's overall albedo decreases, what is the most likely effect on global temperatures?**
    *   A) Temperatures will decrease because more energy is reflected.
    *   B) Temperatures will remain stable because albedo does not affect temperature.
    *   C) Temperatures will increase because more solar energy is absorbed.
    *   D) Temperatures will fluctuate randomly.

4.  **In a scientific context, what is a "positive feedback loop"?**
    *   A) A process where the result of a change amplifies or increases the original change.
    *   B) A process where the result of a change reverses or reduces the original change.
    *   C) A system that remains perfectly balanced and unchanging.
    *   D) A beneficial outcome for human populations.

5.  **True or False:** The greenhouse effect is solely responsible for Earth's climate; changes on the surface (like melting ice) have no significant impact on global temperatures.
    *   True
    *   False