The hypothesis is that materials with more density will be more effective at blocking floodwaters.

You will make sandbags, set up a flood table, and measure how much water goes past the sandbags.

You will need burlap, sand, plant soil, fine gravel, course gravel, a flood table, a marking pen, bottles, a bucket, a sewing machine, a stop-watch, a paint bucket, and a measuring device.

The results showed that sand let the least amount of water past through the sandbags, an average of 848 milliliters of water in 25 seconds. Plant soil, the next best material, let 1,360 milliliters of water past through them. Then came fine gravel. It let through 1,439 milliliters. The material that let through the least amount of water was coarse gravel. It only held back 1,912 milliliters.

This science project is interesting because it tests materials that are not usually used in sandbags to stop floods. It also provides useful information that can help people prepare for floods and save their lives.

Variations to consider include testing different materials such as clay, sawdust, wood chips, etc. and running a more accurate flood, making bigger sandbags, making a more waterproof flood table, running the test longer, and making sure that all sandbags are the exact same size.

Hey there! Here are some awesome videos about this science project that we think you'll really like. They're not only super fun, but they'll also help you learn more about the science behind the project. So sit back, relax, and get ready to have some fun!!