Archive for May, 2008

Getting into genes

There are some difficult concepts in this topic. There are a number of new scientific terms that you need to be aware of and the processes occuring inside the nucleus of a cell can be confusing.

The links below are will help you improve your understanding:

BBC Bitesize:

  • this is a good revision site that UK students use when studying for their equivalent of School Certificate – be aware that the NSW curriculum is slightly different from the UK one
  • as well as definitions of key terms it also has flash animations to help show some of the processes
  • you can test yourself at the end of each section

Mitosis

Meiosis

DNA

Cells Alive:

  • this has some good animations showing mitosis and meiosis (you have to wait for this one to load)

Mitosis animation

Meiosis animation

Learning about Atoms

Click here to learn more about atoms and their structure 

Refer to Early Ideas about Atoms, and Structure of the Atom, then answer the following questions

Question: What are 2 important aspects of Dalton’s Atomic Theory?

Question: Which 2 main components make up the nucleus of an atom?

Question: What components of an atom are not found in the nucleus?

 

Alakaline Metals- 2

Read the responses from your classmates.

Using information from all of these comments, write a statement which you think best describes the relationship between these alkaline metals and their relative positions on the periodic table?

Alkaline Metals and Water

YouTube Rubidium and Caesium 

We watched this video in class after observing a demonstration of Sodium in water. Watch these again, and consider the following four questions. Leave a comment with your thoughts on these questions.

How do you think these metals compare in terms of their reactivity?

What similarities are there in the reactions?

What gas do you think is released in this reaction? Can you explain why?

How do these observations compare with the position of these elements on the periodic table?

Ecology Issues- floods

Watch this ABC Catalyst story

Does this story help you understand the benefits of floods?

Write your opinions or thoughts on the issues covered in the story.