Q2 Post-Assessment

1. What role does water play in shaping Earth’s landscape?

• Water affects only coastal areas and has no impact on interior landscapes.
• Water can erode and transport particles, eventually depositing them in new locations.
• Water solidifies rocks, making them resistant to erosion.
• Water only causes immediate changes like landslides but not gradual changes.

2. What do channels carved by running water indicate?

• Water erosion on the surface
• Landslides removing the topsoil
• Wind blowing away the sand dunes
• Ice melting and moving debris

3. What layers at the bottom of the Grand Canyon tell us about its history?

• Only the layers formed from river deposits
• Top sedimentary rock layers
• Only layers with fossils
• Metamorphic and igneous rocks indicating heat and pressure

4. How is erosion by gravity different from other types of erosion?

• It creates new landscapes on flat terrain.
• It affects only areas near water bodies.
• It involves the movement of particles downhill due to gravity, causing events like landslides and rockslides.
• It smooths out rough surfaces over time.

5. Why do geological features such as hills and shorelines change over time?

• Because of continuous human construction activities
• Due to the interrelated forces of weathering, erosion, and deposition
• Due to the constant pressure from animal burrows
• Because of the gravitational pull of the moon

6. In what ways can human actions influence geoscience processes like erosion?

• Deforestation and construction can increase erosion.
• Human actions only impact geological uplift.
• Planting trees accelerates erosion everywhere.
• Agriculture generally prevents erosion.

7. How do glaciers cause significant changes to the Earth’s surface?

• Through their massive weight and movement, which scrape and deform the land
• By rapidly growing and shrinking
• Through melting and refreezing alone
• By staying in one place and gathering dirt

8. Which process involves the breakdown of rocks at or near the earth’s surface?

• Erosion
• Precipitation
• Weathering
• Sedimentation

9. In what way does vegetation help reduce soil erosion?

• Plant roots anchor the soil, preventing it from being washed away.
• Plants absorb all the water, leaving none to cause erosion.
• Plants grow over rocks, preventing them from breaking down.
• Vegetation increases the surface temperature, making erosion impossible.

10. How does surface weathering affect mountainous terrains?

• It increases the height of the mountains.
• It covers the mountains with volcanic ash.
• It prevents vegetation from growing on the mountains.
• It gradually wears down the rocks and reshapes the mountains.