---
title: "Preventing Erosion"
description: "Compare multiple solutions designed to slow or prevent wind or water from changing the shape of the land"
canonical: https://lightmysky.com/learn/science/preventing-erosion-mt_m6UaSmrQVG
source: https://lightmysky.com/learn/science/preventing-erosion-mt_m6UaSmrQVG.md
retrieved: 2026-10-19
---

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# Preventing Erosion

Compare multiple solutions designed to slow or prevent wind or water from changing the shape of the land

Subject: Science · Area: Earth's Systems · Ages 7 to 8
Page: https://lightmysky.com/learn/science/preventing-erosion-mt_m6UaSmrQVG

## Ready when they can

- Describe how wind and water can change the shape of land (erosion)
- Compare at least two design solutions for reducing erosion (e.g. retaining walls, plants, windbreaks)
- Evaluate which solution works best based on evidence from tests or observations

## Lesson: Preventing Erosion

Wind and water can slowly change the shape of land. Waves wash sand away. Rain can carry soil down a hill. This slow wearing away and moving of land is called erosion.

**Example.** Sam builds a sandcastle at the beach. Wave after wave hits it, and soon the walls crumble into the sea. Sam wants to find a way to protect it next time.

*(drawing: The wall kept the most sand safe. Plants helped too, more than no protection at all.)*

**Tip.** No single fix works everywhere. A wall blocks water head-on. Plants use roots to grip soil. Windbreaks slow the wind down. Testing each one shows which fits the job best.

**Recap.** Erosion slowly reshapes land, but walls, plants, and windbreaks can each slow it down, so test them to see which works best.

## Practice

8 questions on this page, each with its working shown.

## Needs first

- [Shapes of land and water](https://lightmysky.com/learn/science/shapes-of-land-and-water-mt_KsKLVW_ssY)
- [Erosion and weathering](https://lightmysky.com/learn/science/erosion-and-weathering-mt_vAP_A986IQ)

## Opens up

- [Sediment on the Move: Rivers, Coasts and Where It Settles](https://lightmysky.com/learn/science/sediment-on-the-move-rivers-coasts-and-where-it-settles-mt_d1vVJBG6K7)
- [Fast and slow Earth changes](https://lightmysky.com/learn/science/fast-and-slow-earth-changes-mt_ZJu8s-Q1xa)