2Essential QuestionWhat factors influence the movement of water?
3What You Will LearnWhat happens to beads of water when they are placed at the top of a slope.Which moves faster down a slope, small water domes or big water domes.Whether water moves faster on a steep slope or a gentle slope.
4Vocabulary Slope – a slanted surface Flow – the movement of a liquid over a surfaceTell your partner the meanings of slope and flow.
5Part 3Water on a SlopeWhat might happen to a raindrop that falls into a stream flowing down a mountainside?Talk to your partners.Reporters - share.
6TaskWe are going to observe what happens when drops of water are placed on a slope or slanted surface.A slope is a slanted surface.Tell your partner what our task is and what a slope is.
7Directions Watch as I demonstrate the task. Create a slope by propping one end of a tray on a book.Lay waxed paper on the tray to create a smooth surface.Use droppers to drop water on the waxed paper. Observe the behavior of the drops.Return the water to the plastic cup when it collects at the bottom of the tray.
8Directions Cont’d You will work in groups of four to do this task. Getters will get a tray with materials for their group when I say “materials.”Managers, please make sure everyone in your group gets a turn and is on task. Make sure the waxed paper is dried between races.Reporters, be ready to share your group’s observations.
9Directions Create a slope by propping one end of a tray on a book. Lay waxed paper on the tray to create a smooth surface.Use droppers to drop water on the waxed paper. Observe the behavior of the drops.Return the water to the plastic cup when it collects at the bottom of the tray.
10Suggestions Drop drops on top of each other. Drop drops from different heights.Compare the speed of different sizes of beads on the slopes.Find out if one bead can chase and catch another bead.You have five minutes. Begin.
11Share ResultsTalk to your partners about what happens when water is placed on a slope.Reporters, share the results.Make sure all students agree that water flows downhill when placed on a slope.
12AttentionIf you had a race between two water domes, which one would get to the bottom of the slope first?Share your thoughts.
13New TaskLet’s set up dome races to see what will happen if we have a race between water domes.Watch as I demonstrate the task.
14Directions Prop one end of the tray on a book. Hold up the other end of the tray so that it is level.Make several water domes of different sizes across the book end of the level tray. The domes will contain one drop, two drops, three drops, and so forth.Lower the other end of the tray and observe.Guess which dome will make it to the bottom of the tray first.
15Start the Races Managers, please dry the waxed paper between races. Make sure everyone has a turn.You have five minutes. Begin.
16AttentionNow do your races by setting up domes of increasing sizes across the top of the waxed paper.Put 1 drop, 2 drops, 3 drops, 4 drops, 5 drops.You may also use other sized domes.Observe the results of these races.You have five minutes. Begin.
17Share Results Reporters, which dome usually reached the bottom first. Raise your hand to share any other observations you made during the water-dome races.
18AttentionWhat would happen to the speed of the water domes if you increased the slope of the tray?Talk to your partners.Share.
19New Task You will do the water-dome races again. This time you will use two books for your slope.Talk to your partners about how the change in slope affects the water-dome races.
20Share ResultsReporters, be ready to share your group’s results.
21Clean UpCollectors – please return all of the materials to the materials station.Make sure the water is back in the plastic cup.Dry the equipment.
22Student Sheet No. 4You have five minutes to complete this response sheet.Remember that this sheet will be graded.
23CONTENT/INQUIRY Water flows down a slope. Bigger domes of water move down a slope faster.Water flows faster down a steep slope.Teach your partner.
24Vocabulary Review Slope – a slanted surface Flow – the movement of a liquid over a surfaceTell your partner the meanings of slope and flow.
25What You Learned Today Water flows down a slope. Bigger domes of water move down a slope faster.Water flows faster down a steep slope.
26Essential Question What factors influence the movement of water? The size of the water-dome.The steepness of the slope.
27Response Sheet Water Observations Follow along as I read the directions to Student Sheet #5.Complete this sheet to the best of your ability. It will be graded.