You will compare the amount of evaporation on a daily basis from four different liquids over a period of one week. Then make small half-inch marks in between the large inch marks. ©2020 Clearway Energy Group LLC All rights reserved. Repeat this process for seven days OR until one of the liquids disappears completely. Only fill the cups to the top 3-inch sharpie mark. The Water Cycle. You can see how the water cycle works. With some simple materials and a weekend afternoon, you and your kids can have a great time learning about the water cycle together. You can see this process for yourself by conducting a simple experiment. Supplies for the Water Cycle in a Bottle. Now that all of the pure water has evaporated, what do you see left behind on the piece of paper. Details. If you are looking to extend your activities, there are abundant resources in books and online covering the water cycle. Draw a line graph of your results with one colored line representing each of the liquids. You may just find yourself as hooked on the water cycle as I am! Do you think the liquids will evaporate at the same rate or different rates? Here are a video, a website, and an app all about the water cycle. Then, squirt several drops of food coloring on top of the shaving cream. These may be simple experiments, but connecting literature, science, and hands on discovery often gives a more concrete understanding of new concepts. Use a sharpie and a ruler to make 3 large even marks along the side of each cup spaced 1 inch apart. We know that water can be a liquid, a gas, or a solid. This process is called the water cycle. Create a scale on the side of your cups. Outside, water is always changing from liquid to gas and back again. COVID-19 Response, Safety Measures, and Customer Resources. *Available for IL, MA, and NY regions only; new customers only. This is an ongoing process known as the water cycle. This experiment requires some patience, so while waiting, it is a great time to move on to the next two experiments. See below for an example: Place the cups on a windowsill and record the starting height for each liquid as 3 inches. In this experiment you saw water molecules condense into a cloud in the bottle. Then place an ice cube on top of the upside down cup. The salt contained in seawater is dissolved in the water but is not chemically bonded to it. Get our best resources as a monthly subscriber. Water Cycle: An Easy Explanation for Kids. This is known as evaporation. As it says in the book, “Water moves and changes often – just like children!” The water cycle is a perfect scientific learning opportunity for some playful, active learning. The water cycle is nature’s way of purifying, circulating, and replenishing water. Each hour mark the water level and begin to look for changes. Science Center: Home Experiments For Kids, Community Solar Breaks Ground In Illinois, Solar Powered Toy Car Experiment for Students. Use the printable to help children delve deeper into their understanding through these connections. I share the focus questions with students and ask them to record their prediction about what will happen within their stream table during the lab. This is because the water molecules are attracted to the dissolved salt ions and it requires more energy to break apart those water molecules for them to evaporate. Residential customers only. Once you have read the book and completed all three experiments, use the printable to help children make the connections between the book, what they see in their own lives, and what they viewed in the experiments (click on photo below to print). Mark the x-axis as “days” and the y-axis as “height of liquid.”. Remove the labels from the bottles. Fill each cup with a different liquid (pure water, saltwater, rubbing alcohol and orange juice). Use a marker to make a line at the beginning water level. Parental Note: This experiment is geared towards ages 8 and up. Most of the water vapor in the atmosphere comes from the oceans because the ocean covers about 70% of the Earth’s surface. Confession number one, I am a sucker for the water cycle. One can always experiment with simple projects to observe this cycle practically. If you said the liquids will evaporate at different rates, which liquid do you think will evaporate the fastest? As the sun heats the water, it should begin to evaporate. Assemble four clear plastic cups of equal size in a row. The molecules in rubbing alcohol are weakly attracted to each other, and therefore rubbing alcohol evaporates much more quickly than water. In the case of saltwater, you may have noticed that it evaporated a bit more slowly than pure water. Different liquids will evaporate at different rates because they contain different molecules, which require different amounts of energy to separate them. Experiment Overview: When a liquid is placed in a cup, it slowly escapes in a gaseous state until eventually, the container is empty. Take another cup, flip it upside down, and place it on top of the cup with hot water. SPECIAL LIMITED TIME OFFER - $0 CANCELLATION FEE | Promo Code: CANCEL4FREE | Get Information | available for IL, MA, and NY regions only | Details. There are four basic steps in the water cycle*: Evaporation: When heat from the sun turns liquid water into gaseous water vapor, causing it to rise into the air. SPECIAL LIMITED TIME OFFER – through August 1, 2020 *Available for IL, MA, and NY regions only; new customers only. Make a data chart to keep track of the level (inches) of each liquid on a daily basis. The warmer air caused the water in the bottle to evaporate (it became water vapor) and you could not see it.