#5036 Daily Warm-Ups: Nonfiction Reading teacher Created Resources #5036 Daily Warm-Ups: Nonfiction Reading Warm-Up
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DAILY 6
26 Lions ©Teacher Created Resources 67 #5036 Daily Warm-Ups: Nonfiction Reading Warm-Up Check Your Understanding / 4 Name ______________________________________________ 1. What is the author’s purpose in writing the passage? a. to encourage water usage b. to inform readers about the value and properties of water c. to compare water to air d. to entertain the reader 2. What does water do when it freezes? a. It expands. c. It gets less dense. b. It gets more dense. d. both a and c 3. Which of the following would be the best title for the passage? a. “Water Is Wet” c. “Save Water” b. “The Importance and Nature of Water” d. “Why Water Is Dense” 4. Which of the following offers true comparisons of liquid water and ice? a. Liquid water is denser than ice. c. Ice will not float. b. Ice expands more than liquid water. d. both a and b Water is among the most important compounds on Earth. Plants, animals, and people could not live without many sources of water. The oceans of the world are giant engines that produce fresh water as rain and snow through the water cycle. Only 3% of the water on Earth is fresh water. The other 97% of the water is salt water in the oceans. Even most of the fresh water is locked up in glaciers and ice caps. Water is the only substance that can be found as a solid (ice), liquid (water), and gas (steam or water vapor) within the normal range of Earth’s temperatures. Water freezes at 32°F and boils at 212°F. Between those two temperatures, water flows as a liquid. The density of water is greatest at 39°F. This means that the most water can fit into a specific space at this temperature. Ice is much less dense than liquid water. This is why ice forms on the surface of lakes and why icebergs and ice cubes float rather than sink. Water is unique in that it expands when it freezes. This causes water pipes to break during extremely cold winter weather. Water expands in an ice cube tray when it freezes, and the ice cube rises over the surface of the tray. Scientifically Speaking Download 10.24 Kb. Do'stlaringiz bilan baham: |
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