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Designing a Cool Sleeve for a Bike Water Bottle

Grade 6 engineering practice: test bike bottle sleeves in the sun, judge them against three criteria and explain how each slows or speeds energy transfer.

Grade 6ScienceInteractive · Printable

Aligned toMS-PS3-3

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What’s included

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

Details

Format: Interactive · Printable
Grade: Grade 6
Subject: Science
Question types: Fill in the blank, Multiple choice, Circle the answer, Short answer

About this worksheet

What students practice

Students judge bottle sleeve designs against a temperature goal, a mass limit and a use rule.
Students explain how reflection, insulation and evaporation change thermal energy transfer into a bottle.

How to use

Read the criteria aloud and have students restate them before looking at the tables. Pair students for the fair-test and winter questions.

Curriculum

NGSS standard covered

MS-PS3-3

Design and test a device, such as an insulated box or a solar cooker, that reduces or increases thermal energy transfer.

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Designing a Cool Sleeve for a Bike Water Bottle

Test bottle sleeves in the summer sun and explain how each one changes energy transfer.

Part 1: The sunny-day test

Read the passage and both tables, then answer questions 1–6.

Warm Water on the Charity Ride

1Every June, the cycling club at Westbrook Middle School rides 25 km in a charity ride, which takes the riders about an hour. Last year, many riders said the water in their bottles was warm by the end. Club member Mariam Diallo decided to design a sleeve that slides over a standard bike bottle.

2With her coach, Mr. Henrik Vos, Mariam wrote three criteria. First, after 60 minutes in the sun, the water must be 20 °C or colder. Second, the sleeve can have a mass of no more than 100 g, because racers care about every gram. Third, riders should not have to stop during the ride to wet or refill anything on the sleeve.

3On a sunny afternoon when the air was 32 °C, Mariam set six identical plastic bottles on a stand in full sun. She filled each with 600 g of water at 8 °C from the refrigerator and pushed a thermometer through each cap. A box fan blew air across all six bottles the whole time, to act like the wind a rider feels. Every 15 minutes she read the thermometers.

4Bottle A had no sleeve. Sleeves B, C and D were made of foam with tiny air pockets inside. Sleeve B was 3 mm foam with a black cover. Sleeve C was the same 3 mm foam with a shiny silver cover, and Sleeve D was thicker 6 mm foam with the same silver cover. Sleeve E was a thin cotton sock soaked in water, and Sleeve F was the same sock, dry. Mariam noticed that the wet sock had dried out after about 35 minutes.