--- title: "British Science Week- Year 4-Volcano Cups and Bubble Wonders" url: "https://stbarnabasdarwen.co.uk/news/2025-03-11-british-science-week-year-4-volcano-cups-and-bubble-wonders" school: "St Barnabas Primary School, A Church of England Academy" --- We are holding a number of open days for children due to start primary school in September 2027. Please see our admissions page for further details. Everyone welcome! # British Science Week- Year 4-Volcano Cups and Bubble Wonders ![](https://files.schudio.com/st-barnabas-primary-school/images/news/activitymore-0A8890D0-10B5-48AC-BFB5-AF30658CE3B4(1).png) 11 March 2025 This afternoon in Year 4, we created volcanoes in a cup, using a fascinating mixture of baking soda, vinegar, and food colouring. The children decorated their cups with different emojis to express their excitement before watching their mini eruptions bubble over! They observed how the chemical reaction between the acid (vinegar) and the base (baking soda) produced carbon dioxide gas, causing the mixture to fizz and overflow just like a real volcano. We then explored the science of surface tension by making bubbles on the table and even bubbles inside bubbles. Year 4 scientists discovered that bubbles form because a thin layer of soap molecules trap air inside. By carefully blowing into their bubbles with a straw, they learned that the soapy film stretches and holds its shape, allowing them to create bubbles within bubbles. Our Science Ambassador, James, was a fantastic help throughout the session, supporting his peers by demonstrating techniques and encouraging them to think scientifically. The children made predictions, tested different techniques, and used Talk Tactics to share their observations. It was a fantastic hands-on way to explore the science behind reactions, gases, and surface tension. ![](https://stbarnabasdarwen.co.uk/images/news/activitymore-0A8890D0-10B5-48AC-BFB5-AF30658CE3B4(1).png) [Year 4](https://stbarnabasdarwen.co.uk/news/tag/year-4) [Science](https://stbarnabasdarwen.co.uk/news/tag/science) [Oracy](https://stbarnabasdarwen.co.uk/news/tag/oracy) [![](https://files.schudio.com/st-barnabas-primary-school/imagecache/100x100c/news/singing_worship.jpg)](https://stbarnabasdarwen.co.uk/news/2025-03-10-singing-worship-and-year-of-prayer) Previous ### [Singing Worship and Year of Prayer](https://stbarnabasdarwen.co.uk/news/2025-03-10-singing-worship-and-year-of-prayer) [![](https://files.schudio.com/st-barnabas-primary-school/imagecache/100x100c/news/activitymore-94A8297D-BA0D-4178-9215-1A25D45A827E.png)](https://stbarnabasdarwen.co.uk/news/2025-03-12-year-3-class-worship-how-can-we-make-connections-with-others) Next ### [Year 3- Class Worship-How can we make connections with others?](https://stbarnabasdarwen.co.uk/news/2025-03-12-year-3-class-worship-how-can-we-make-connections-with-others) ### Personal Development - [News](https://stbarnabasdarwen.co.uk/news) - [Events](https://stbarnabasdarwen.co.uk/events) - [Photo Gallery](https://stbarnabasdarwen.co.uk/photo-gallery-category/our-gallery) - [Calendar](https://stbarnabasdarwen.co.uk/calendar) - [School Council](https://stbarnabasdarwen.co.uk/academy-life/school-council) - [Attendance](https://stbarnabasdarwen.co.uk/academy-life/attendance) - [Fundraising](https://stbarnabasdarwen.co.uk/academy-life/fundraising) - [Extra Curricular Clubs](https://stbarnabasdarwen.co.uk/academy-life/clubs) - [Little Leaders](https://stbarnabasdarwen.co.uk/academy-life/little-leaders) - [Visits and Visitors](https://stbarnabasdarwen.co.uk/visits-and-visitors) - [British Values](https://stbarnabasdarwen.co.uk/british-values) - [Protected Characteristics](https://stbarnabasdarwen.co.uk/protected-characteristics) ##### Location Knowlesly Road Darwen Lancashire BB3 2JA ##### Contact Us 01254 702996 ##### Stay Connected - [Facebook](https://www.facebook.com/stbarnabasce/) - [X](https://twitter.com/stbarnabasce) © Copyright 2021–2026 St Barnabas Primary School, A Church of England Academy School & Trust Websites by [ ![Schudio logo](https://stbarnabasdarwen.co.uk/img/logo/light.png) ](https://www.schudio.com/)