Print Floating Cubes Reading Comprehension with Third Grade Work
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Print Floating Cubes Reading Comprehension
||edHelper's suggested reading level:
||grades 3 to 4
||Flesch-Kincaid grade level:
||child-proof, density, volume, unit, unique, mass, digital, container, especially, adult, vapor, old-fashioned, liquid, onto, overnight, freezer
By Trista L. Pollard
1 If ice is just frozen water, why does it float in liquid water? Well, water has many unique properties, especially when it is heated or cooled. Did you know that a cup of water has a different weight than a cup of ice (solid water) or a cup of water vapor (gaseous water)? Let's see what happens when water changes into its different forms (states).
2 Like other objects (including you), water has mass and volume. However, it does not have a definite shape; it takes on the shape of its container. Mass is a measurement of the amount of matter in an object. Mass is closely related to weight and is commonly represented in units of ounces, pounds, grams, or kilograms. Volume is a measurement of the amount of space that a substance or object takes up. Mass and volume are used to calculate the density of a substance or object. Density is the measurement of how much matter is in a specific volume. An object with a high density will have a large quantity of matter in a specified volume. An object with a low density will have a smaller quantity of matter, and lower mass, in the same specified volume. It is density that determines if objects will float in liquids. Objects that are less dense than the liquid they are in will float, while those that are more dense will sink.
3 Water changes to a solid called ice when it freezes at a temperature of 0 degrees Celsius. Once you place liquid water into a freezer, it loses heat and changes into ice. As water cools, it begins to contract or take up less space. However, as it cools below 4 degrees Celsius, it begins to expand or take up more space. Water is the only liquid that contracts while cooling and expands as it freezes. All other liquids contract as they get colder.
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