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Ground Guards for the River Rowing Club

Compare model tests of stone rows and mats, then use evidence to improve a plan for sandy ground beside a river rowing club.

Grade 2ScienceInteractive · Printable

Aligned to2-ESS2-1

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What’s included

Single worksheet
Auto-graded online
1 NGSS standard
Printable answer key
14 questions
Classroom-ready

Details

Format: Interactive · Printable
Grade: Grade 2
Subject: Science
Question types: Fill in the blank, Multiple choice, Circle the answer, Sorting, Short answer

About this worksheet

What students practice

Students compare test results for ways to slow land changes caused by moving water.
Students use evidence to choose and improve a cover that reduces sand loss.

How to use

Read the investigations aloud and review the graph scales. Have students compare the designs, then explain a plan using results from both tests.

Curriculum

NGSS standard covered

2-ESS2-1

Compare ways to slow or stop wind or water from changing the shape of the land.

Preview

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Ground Guards for the River Rowing Club

Compare ways to keep moving water from carrying sand away.

Test Two Ways to Cover the Ground

Read the investigation. Use the first graph to answer questions 1–5.

Sand Beside the Oar Rack

A rowing club stores its oars on a rack near a river. After rain, club members saw little grooves in the sandy ground beside the rack. They asked a class to compare ways to protect that ground.

First, the class made three models at school. Each tray held one cup of sand on the same gentle slope. Next, they changed the cover: bare sand, rows of smooth stones across the slope, or a small woven mat laid flat on the sand.

Then, an adult slowly poured two cups of water at the top of each model over fifteen seconds. The pouring height stayed the same. Larger trays caught the sand that washed out.

Last, the class let the collected sand dry. They measured it with level teaspoons. The graph shows the sand that left each model, not the sand that stayed.