Mrs. Kahler's 8th Grade Science Class

Sunday, November 25, 2007

Hope you all had a great break! I can't wait to get back into learning about physics. This week we will be talking about temperature (fitting isn't it) and how it moves around and circulates. Also remember that this Friday is a half day and the end of the second marking period. Make sure you have all your work in. Let's have a great week Lancers!

Science
Monday Nov. 26
Due to the fact that we are coming off of a long break today we are going to be doing some review from chapter 5. This will be done by working as groups to answer the review questions on pages 147 and 148. At your tables you will be doing:
  • Reviewing Vocabulary 1-10
  • Checking Concepts 1-10
  • Understanding Concepts 11-15
During this period of time Mr. Korchnak will walk around the room and answer specific questions that students may have. Also on Tuesday we will grade the assignment as a class.

Tuesday Nov. 27
We will start the day by grading the work done in the previous day. Afterwards we will being chapter 6 by doing a vocabulary assignment. We are going to break the mold a bit and do individual crossword puzzles. On one page you will have the drawn out crossword with clues. On the second page you will have the answer key. A template for the crossword is linked below.

Chap. 6 Vocabulary Words
  • Conduction
  • Fluid
  • Convection
  • Radiation
  • Insulators
  • Radiator
  • Solar Energy
  • Heat Engine
  • Combustion
  • Internal Combustion Engine

Crossword Template:
Vocab_Crossword_Template.pdf

Wednesday Nov. 28
Today we will start on chapter 6 from the book. We will begin with section 6.1. This sections deals with the movement of thermal energy. Concepts we will be discussion are conduction, convection, radiation and insulation. We will be talking about how we use an understanding of heat transfer to make things warm or keep them cool. We will pair read this section and answer question supplied by Mr. K in our science notebook. We will also make a class list of things we wouldn't be able to do without an understanding of movement of thermal energy.

Here are the questions we will be answering:
  1. How is thermal energy transfered between solid objects?
  2. How is thermal energy transfered in a liquid or air?
  3. What is more dense hot water or cold water? How does this concept apply to a hot air ballon?
  4. Draw an example of convection?
  5. Using the example of boiling water where is heat transfer occurring? Please draw this.
  6. How does heat travel from the Sun to the Earth?
  7. Give two examples of good insulators and why they are.

Thursday Nov. 29
Today we will be working with concepts what we learned in the previous day. This will include a lab were we will place colored ice cubes in normal and salt water and observe how the cool water from the ice moves in the different types of water. This will help us understand the concept of convection and movement of thermal energy. We will do this by having each table preform two experiments and filling out data sheets. The data sheet is found below.

Ice Cube Lab:
Ice_Cube_Convection.pdf

NOTE: Quiz retakes from chapter 5 will be today during lunch.

Friday Nov. 30
Half day- Lesson TBD

Ecosystems
Tuesday Nov. 27
Today we will be reading an article about why in some places leaves are changing color later due to increased carbon dioxide levels in the atmosphere. To do this we will use a combination of teacher lead reading and pair reading. After the article is read by the students they will write down 5 interesting facts from the article and a short response to the reading.

Article:
Leaves_Changing_Color_Later.pdf

Thursday Nov. 29
The topic of discussing today will be genetically modified crops. We will be talking about the benefits and the shortfalls of using GM crops. To do this we will be reading an article from the BBC about a study done on GM crops. Students will be asked to read the article and list 3 pros and 3 cons of GM crops. Then they will be asked to write down their opinion on them whether they are for or against using them. There are links to the articles we will be reading in class.

GM Crop Article: BBC_GM_Crop_Article.pdf

Ice_Cube_Convection.pdf

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