Monday, March 18, 2019 Day 3

Homeroom:

Volunteer meeting - Thursday “Save the World” project at lunch

Grade 8 Agenda:

Homework:

Read and outline “Types of Asexual reproduction”

  • Pages 248 through 253

Focus on

  • identifying different types

  • description of process

  • examples of organisms that use it

Do Now:

Please get out your response to “CLONE FROM THE PAST?” HANDOUT

Read “Launch Lab” on page 247

Fill out a “Lab Safety Form”

Lesson:

Volunteer meeting - Thursday “Save the World” project at lunch

REview Lab safety forms

  • collect

Launch Lab:

  1. Wet Mount technique

  2. Steps 1, 2, and 3 done as demo

  3. grouping

  4. Student’s complete steps 4 and 5

  5. in your science notebook:

    • Record observations

    • respond to “Think About this”

  6. Clean up and return to class

  7. Discuss

  8. SLANT:

    • What is asexual reproduction?

WIN:

Grade 7 Agenda:

Homework:

  1. Read page 395 (Friction and the Law of Conservation of Energy

  2. Locate and bring the following items to class on Wednesday (hair dryer returned Thursday)

  • round pencil with unused eraser

  • cardboard milk or orange juice container

  • quart size best, 1/2 gallon ok too

  • three-speed hair dryer

  • sewing thread (about 3 feet wrapped around the pencil)

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Do Now:

read and complete the Key Concept Builder Worksheet

Lesson:

Review energy transformations worksheet from HW

Review Key Concept Builder Worksheet from Do Now

Read and Discuss Text pages 393 and 394

SLANT: Changes Between Forms of Energy and Conservation of Energy

  1. energy transformation: when one form of energy is changed into another

    • examples:

      • electrical into radiant into thermal in a microwave

      • electrical into radiant and sound in a television

      • changes between KE and PE

  2. objects often transform potential energy into kinetic and kinetic into potential

    • throwing a ball upward is a good example:

      • pushing the ball upward gives it kinetic energy

      • as it rises the kinetic is turned into gravitational potential

      • at its highest point all of the kinetic is gone and it is now gravitational potential

      • as it falls, gravitational potential is transformed into kinetic

      • as it strikes the ground or is caught it is maximum kinetic energy again

  3. conservation of energy:

    • the law of conservation of energy states that energy can be transformed from one form into another, or transferred between one area and another, but it is never created or destroyed.

    • The total amount of energy in the universe does not change

    • it hasn't changed since the universe was created in the Big Bang