Lake Turnover Lesson

Lake Turnover Lesson
Lake Turnover Lesson
Lake Turnover Lesson
Lake Turnover Lesson
Lake Turnover Lesson
Lake Turnover Lesson
Lake Turnover Lesson
Lake Turnover Lesson
Grade Levels
Product Rating
2 Ratings
File Type

Compressed Zip File

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5 MB|100 pages
Product Description
This is a 100 slide PowerPoint presentation with built in class notes, built-in hands-on activities with directions, homework sheet, lesson notes, and more.

This PowerPoint begins with with a neat introduction that gets the students guessing about the upcoming class period. The question of what is a turnover is asked. Pictures of athletic events, pastries, getting fired, and other definitions are mentioned. Eventually Lake Turnover is described. Lake Turnover is then described in a series of slides about fall overturn and the colder conditions of the early winter. Layers of ice during the winter are described, winter stagnation, and spring mix up. An activity has students observe melting ice. Teacher freezes ice cubes in advance mixed with blue food coloring. Teacher places ice cube in clear container (tall) filled with water. Students observe how ice floats, but cold water that melts from the ice cube sinks to the bottom and spreads out. This demonstrates how the layers of water can mix with cold surface temperatures (Fall Overturn). All of the major vocabulary terms are addressed - Epilimnion, Thermocline, Hypolimnion. Students then sketch summer stagnation in a series of drawings that unfold slide by slide and use colors (red, purple, blue for the different layers and their temperatures). A really neat activity is then described that has the teacher help to create a lake in summer stagnation in a clear bottle (I cut the tops off of two liter clear soda bottles). I conduct this in activity in table groups but also makes a nice demonstration if materials are scarce. Teacher uses ice and blue food coloring to create really cold blue water. Students fill clear bottle 2/3 of the way with the cold blue water. Teacher then boils hot red colored water. Using a device (I use a Petri-dish and needle nose pliars) teacher pours hot red water onto cold blue water but uses the device so that the hot water layers spread on top of the cold rather than mixing violently (see visual in sample image. Teacher should make sure students are clear as not spill boiling water on anyone. What results is three distinct layers. (A cold blue hypolimnion, purple thermocline, and red epilimnion). Students really love seeing the three colorful layers of water. Students sketch this summer stratified lake in their journal (It lasts a long time). Teacher then instructs students to blow on the surface of the water (Fall Overturn) and places a few ice-cubes in the water (The Thermocline and Epilimnion Mix). The students then see the layers mixing (Fall Overturn). Questions follow-up the activity and answers. This is a neat lab that I do every year. Students love seeing the cool colors / layers. The visuals in the PowerPoint prior to the lab are very helpful. Everyone will learn during this activity. Please see my entire Rivers, Lakes, and Water Quality Unit described below before purchasing this PowerPoint.

This PowerPoint includes critical notes (Red Slides), exciting visuals, challenge questions, activities with directions and more. Text is usually placed at the top of the slide so it can be read from all angles of a classroom. Color coded slides, as well as a shade technique is used to increase student focus and allows the teacher to control the pace of the lesson. These PowerPoints are meant to be as interactive as possible and ask many questions, provide built-in opportunity to review material, explain directions to activities, and much more. Transition effects are never used.

Please visit my other posting on TpT called the Rivers, Lakes, and Water Quality Unit which includes this PowerPoint within the 1250+ slide PowerPoint roadmap, 10 page bundled homework / assessment, 7 page modified assessment, detailed answer keys, and 13 pages of unit notes for students who may require assistance that chronologically follow the PowerPoint slideshow. The answer keys and unit notes are great for support professionals. This larger file also includes one PowerPoint review games (110+ slides with Answers), 10 .flv videos, lab handouts, activity sheets, rubrics, materials list, templates, guides, and much more. Also included is a 190 slide first day of school PowerPoint presentation. Everything arrives in editable format and can be modified to fit any curriculum or time requirement.

Areas of Focus within The Rivers and Water Quality Unit: Watersheds, Rivers of the United States, Sections of a River, Parts of River (Vocabulary), Stream Order, Erosion and Deposition, Water Quality, Chemical Properties of Water, Bio-Indicators of Water Quality (EPT richness), Physical Properties of Water Quality, Rivers and Flooding, Factors that Control Flooding, Types of Flooding,Tsunami's, Wetlands, Flood Prevention, Levees, Dams and Ecosystem, Importance of Dams, Impacts of Dams, Hydropower, Parts of Dam, Salmon (Life Cycle), Systems of Help Salmon, Fish (General), Layering in a Lake, Lake Turnover, Nutrients and Lakes.

I also sell all 20 Science Units as a discounted curriculum bundle on TpT. This includes all 20 units (50,000+ slides), in Life, Earth, and Physical Science for students in grades 5-10, This also includes 275 pages of bundled homework / assessment that chronologically follows each unit, 175 pages of modified assessments, 325 pages of answer keys, 260 pages of unit notes, 37 PowerPoint review games (5000+ slides), hundreds of lab activities with questions and answers, hundreds of project ideas, 315 videos, hundreds of pages of handouts, First Day PowerPoint, Guidebook, and Four Year Curriculum Guide and classroom license.

If you have any questions please feel free to contact me. Thanks again and best wishes.

Ryan Murphy M.Ed

Below are the links to the 20 units of study that I offer on TpT for individual purchase. All of these are included in the curriculum purchase.

Physical Science Units
Science Skills Unit
Laws of Motion and Simple Machines Unit
Matter, Energy, and the Environment Unit
Atoms and Periodic Table of the Elements Unit

Physical Science Curriculum
Physical Science Bundle Package (4 Units)

Life Science Units
Human Body System and Health Topics Unit
Cellular Biology Unit
Infectious Diseases Unit
DNA and Genetics Unit, Cell Division
Taxonomy and Classification Unit
Evolution and Natural Selection, Change Topics Unit
Botany Unit
Ecology Feeding Levels Unit
Ecology Interactions Unit
Ecology Abiotic Factors Unit

Life Science Curriculum
Life Science Bundle Package (10 Units)

Earth Science Units
Weathering, Soil Science, Soil Conservation, Ice Ages, Glaciers Unit
Astronomy Topics Unit
Geology Topics Unit
Weather and Climate Unit

Earth Science Curriculum Bundle
Earth Science Curriculum (6 Units)

Water, Water Quality, Rivers, Lakes, and Fish Units
Water on Earth, Properties of Water, Water Pollution Unit
Rivers, Lakes, and Water Quality Unit (Salmon, Fish, and more)

Below is a link to view this curriculum in greater detail. You will find a PowerPoint tour, how a unit works guide, curriculum possibilities, standards, and many free samples.
Curriculum Tour

Entire Curriculum I offer on TpT...
Entire 4 Year Curriculum, 20 Full Units, (50,000 Slides) HW, Notes, and much more

Best wishes,

Ryan Murphy M.Ed
Science from Murf LLC

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Total Pages
100 pages
Answer Key
Teaching Duration
55 minutes
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