Physics 30 - Oct 7

Today in class we finished doing example 7 and 8 and began looking at example 9.  Tomorrow we will finish example 9 and get some time to work on Assignment 2.4.  In the meantime, check out the video links to get some inspiration for example 9.

Science 90 - Oct 6

Today we wrapped up our Reproduction Unit by going over the assignment given on Friday.  I also gave a study guide today to help with organizing your studying going into the exam on Wednesday.
Know the following for the exam

1. The Cell - Plant and Animal
2. Types of Reproduction
• Asexual - methods for plants and animals
• cell division (mitosis)
• Sexual
• Flowering plants
3. Genetics
• genes, traits, characteristics, dominance
• DNA - know the base pairs and how it works!!
4. Human Reproduction
• male/female reproductive systems
• menstrual cycle - know the 4 hormones involved
• pregnancy and conception
• contraception and reproductive technologies

The exam will include a section on matching, fill in the blank, diagrams as well as short answer.  The exam is out of 84 marks.

Physical Science 20 - Oct 3 and Oct 6

On Friday, we started looking at the concept of the mole and what we use it in chemistry for.  We also learned what molar mass is and how to calculate it.  This was covered on slides 1-11 on the powerpoint called The Mole.  It is found in the chemistry folder of the Physical Science 20 notes. Students then spent the rest of the class working on Assignment C17, which was on calculating molar masses for various elements and compounds.

Today we started to learn how to use the mole to convert between masses of substances and number of particles of substances.  This is called molar conversions and was covered on slides 15-19 of the same powerpoint.  Assignments C18 and C19 were given at the end of the class, however you will be given more time tomorrow to work on them.

Physics 30 - Oct 6

Today we started looking at projectile motion.  The key to solving projectile motion is to break the motion up into 2 parts - one horizontal part and one vertical part.  We need to treat each part separately and solve them individually.  The nice thing about this method is it allows us to deal with two 1D problems.  The horizontal motion, because there is no acceleration, doesn't change and therefore is uniform motion.  The vertical motion is influenced by gravity and therefore we are dealing with a constant motion problem.

I did a couple of demonstrations to show this concept.  As well, I discussed a thought experiment called the hunter-monkey demonstration.  I showed a video that demonstrated the experiment.  It is linked right here.  Crazy Hunter-Monkey Demo

We started solving Example 7 but didn't quite finish it.  We will finish it tomorrow as well as examples 8 and hopefully get started on Example 9.

Science 90 - Oct 2 & 3

Today we did Activity A28 on page 92 in the textbook.  This activity allowed us to look at the four hormones that are responsible for the female menstrual cycle.  We learned how these hormones work in tandem to signal different changes in the cycle, including ovulation and menstruation.  Students handed in Activity A28 at the end of the class.  Tomorrow we will learn about pregnancy and about contraception and artificial fertilization technologies.  This will be covered on slides 109-112.  We will conclude the unit with a small assignment on slide 113.  I will be checking this assignment on Monday.

Physical Science 20 - Oct 2

Today students were able to collect the rest of their data for Lab C2.  I also showed students how to make some of the conversions at the end of the lab.  The one where you had to convert the volume into Lake Superiors was a particularly tricky conversion.  Tomorrow we will begin to look at the concept of the mole and what it is.

Physics 30 - Oct 2 & 3

Today we finished looking at example 6 and began working on Assignment 2.3.  Example 6 was another example to show how to work with vector resolution.  This time though we were adding 3 vectors together instead of 2.  Students then spent the rest of the class working on Assignment 2.3, which we will continue with tomorrow.  Many students will be missing tomorrow due to the U of S Open House.  We will start looking at projectile motion on Monday.