subject: _:node979779cb22ec6c67e8ddee3df9968de5
obj: "\n                    \n                    Have you ever gone bobbing for apples? Why is it that some fruits and vegetables float, while others sink to the bottom? In this experiment, you\u2019ll be experimenting with different types of fruits and vegetables to see whether they float or sink.Download Project\n\n\n\nAre some fruits and vegetables denser than others?\n\n\n\n\n\tSelection of fruits and vegetables\n\tKitchen scale\n\tJar large enough to submerge the fruits and vegetables\n\tLarge pan\n\tPencil\n\tMeasuring cup that measures volume in milliliters\n\tCalculator\n\tTowel\n\n\n\n\n\n\tGrab some fruits and vegetables from your kitchen or the grocery store. You can test as many as you\u2019d like.\n\t\n\n\t\n\t\t\n\t\t\t\t\t\t\tgoogletag.cmd.push(function () {\n\t\t\t\t\tgoogletag.display(\"ad-123880\");\n\t\t\t\t});\n\t\t\t\t\t\n\t\n\n\n\n\t\n\t\t\n\t\t\t\t\t\t\tgoogletag.cmd.push(function () {\n\t\t\t\t\tgoogletag.display(\"ad-103379\");\n\t\t\t\t});\n\t\t\t\t\t\n\t\n\nAfter you\u2019ve collected your produce, create a hypothesis, your best guess as to what\u2019s going to happen. For each vegetable and fruit, guess whether it will float or sink.\n\tBegin by placing the jar into the pan. Fill it up with water. Make sure that no water goes into the pan.\n\tNow, weigh your first fruit or vegetable. Note its weight in grams.\n\tCarefully lower your fruit or vegetable into the jar. Does it float or sink? Make a note of the results.\n\tIf the fruit or vegetable sinks, remove the jar from the pan and pour the water into a measuring cup. Measure the amount of water in milliliters. This is the volume \u2013 the amount of space that food took up.\n\tIf the fruit or vegetable floats, push it down with the tip of a pencil until water spills out and over into the pan. Measure the water in milliliters.\n\n\n\n\n\n\n\n\tNow it's time to calculate thedensityof your produce.For each piece of food, divide the fruit or vegetable\u2019s weight in grams by its volume in milliliters.In a table, make a note of the weight, volume, and density of each fruit or vegetable. Your table might look like this:\n\n\n\n\t\n\t\t\n\t\t\t\n\t\t\tName \n\t\t\t\n\t\t\t\n\t\t\tFloats/Sinks \n\t\t\t\n\t\t\t\n\t\t\tWeight (grams) \n\t\t\t\n\t\t\t\n\t\t\tVolume \n\t\t\t\n\t\t\t\n\t\t\tDensity \n\t\t\t\n\t\t\n\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\n\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t\n\t\n\n\n\n\n\n\tRepeat this process for each fruit or vegetable. Which ones float? Which ones sink? Is this related to the density? How?\n\t\n\t\n\n\n\n\nDifferent fruits and vegetables will also float or sink depending on their density. In general, apples, bananas, lemons, oranges, pears, and zucchinis will float, while avocadoes, potatoes, and mangoes will sink. Others like turnips and sweet potatoes sometimes sink and sometimes float.\n\n\n\nWhether a fruit or vegetable sinks or floats has a lot to do with its density. What is density? It\u2019s how heavy an object is compared to its volume. Imagine lifting a pillowcase full of feathers. Now imagine lifting a pillowcase full of apples. Which one would be heavier? They are both the same size, but since apples are denser than feathers, the one with the feathers in it would be heavier.\n\nIn this experiment, you were trying to find out what vegetables and fruits are the lightweights of the plant world. Fruits and vegetables are dense for different reasons. Some are like pumpkins, with thick skins. Others are like avocadoes, with a big pit. Others have more air inside them. The shape or age of a fruit can also impact whether it sinks or floats.\n\nWhy do objects float?\n\nEach fruit or vegetable has a volume. The volume is the length multiplied by the width multiplied by the height. Water has volume too. When you put an object into water, it pushes the water aside. The water tries to go back down into the hole.\n\nWho will make it to the bottom, and which one will float on top? Water and apples don\u2019t arm wrestle to decide. Instead, it\u2019s based on the properties of matter. Whatever is less dense will float. Since apples are usually less dense than water, they will float on top of the water. If you place an avocado into the water, it is denser than water, so it will sink. The water is less dense, so it will \u201Cfloat\u201D on top of the avocado. If your container is completely full when you put the avocado in, the water will spill over the top.\n                    \n\n                    \n                                    "