Alperton Science

Physics relies heavily on Mathematics. This amazing wonder of maths has appeared in several postings on the internet. Enjoy!

 Countdown

 1 x 8 + 1 = 9

 12 x 8 + 2 = 98

 123 x 8 + 3 = 987

 1234 x 8 + 4 = 9876

 12345 x 8 + 5 = 98765

 123456 x 8 + 6 = 987654

 1234567 x 8 + 7 = 9876543

 12345678 x 8 + 8 = 98765432

 123456789 x 8 + 9 = 987654321

The Eight

 9 x 9 + 7 = 88

 98 x 9 + 6 = 888

 987 x 9 + 5 = 8888

 9876 x 9 + 4 = 88888

 98765 x 9 + 3 = 888888

 987654 x 9 + 2 = 8888888

 9876543 x 9 + 1 = 88888888

 98765432 x 9 + 0 = 888888888

The One

   1 x 9 + 2 = 11

   12 x 9 + 3 = 111

   123 x 9 + 4 = 1111

   1234 x 9 + 5 = 11111

   12345 x 9 + 6 = 111111

   123456 x 9 + 7 = 1111111

   1234567 x 9 + 8 = 11111111

   12345678 x 9 + 9 = 111111111

   123456789 x 9 +10= 1111111111

Symmetry

   11 x 11 = 121

   111 x 111 = 12321

   1111 x 1111 = 1234321

   11111 x 11111 = 123454321

   111111 x 111111 = 12345654321

   1111111 x 1111111 = 1234567654321

   11111111 x 1111111 1 = 123456787654321

   111111111 x 111111111=12345678987654321

This has been around for some time .. 1997 in fact.

Below is an example of the playful nature of nanotechnology.

“Smallest guitar, about the size of a human blood cell, illustrates new technology for nano-sized electromechanical devices.” 

“The world’s smallest guitar is 10 micrometers long — about the size of a single cell — with six strings each about 50 nanometers, or 100 atoms, wide.”

Click HERE  for further information from Cornell University in the USA. Apparently, it  has been “played” for the first time by shooting laser light at the silicon “strings.” Click  HERE  for even more information. 

The sound is in the ultrasound region, inaudible to human ears at 10Mhz.

Photo by D. Carr and H. Craighead, Cornell.The above image (508 x 327 pixels) is the digital image created by the electron microscope, and is the highest-resolution version available.

Click this HERE for a good introduction with an oral accompaniment to ideas on magnets and fields.

There is a quick M/C test and a review section to go with it all too. An ideal KS3 Year 8 resource or as a quick intro/reminder about magnets again at KS4.

WATCH OUT —- many diagrams of “fields” for a BAR MAGNET are shown wrongly as they do not show the field lines’ seperation increasing from the magnet as you get further away from it. Often you see them equally spaced !!!!!!!!!  ( This error is not in this link .. excellent ! )

What more could a KS3 Teacher or a Student working at KS3 ask for? Some of these resources are excellent for Independent Learning on Science Unleashed.

Truly a very useful resource on the web. Some resources here are useful for KS4 too. 

I have used this site successfully for my classes and am convinced you shall find it the same. The Games are good, excellent high quality Graphics for use with IWBs/Data Projectors and the Videos are concise, thoroughly informative and enjoyable, etc, etc ……

Click   HERE    to take you to the site. Enjoy.

Let me know if you found the last 2 links in the last 2 posts useful.

ALSO CHECK OUT THE OTHER LINKS ADDED IN THE “VERY USEFUL SCIENCE WEBSITES” SECTION TOO, IN THE RIGHT HAND MARGIN.

Leave me a comment if you found these useful.

This is what the site says about itself :

“ … it’s a jungle out there so scibermonkey collects all the best websites … throws out the nuts … leaving you with the pick of the bunch to go ape about science and swing through school! ”

I totally agree. I have used this site and it is a really good resource for KS3 Science!

Click HERE for to go to the website.

These may help you in some parts of your Heating and Cooling topic.

Enjoy 

I am a U.K. teacher and a previous Head of a large Faculty of Science managing and leading 21 staff.

I have gained recognition, for some time now, as an excellent teacher by being awarded the Chartered London Teacher, CLT, status with Fellowship of the College of Teachers, FCoT and also the Advanced Skills Teacher, AST, status.

The beauty of it all is that I have become an even better teacher as a result and I would recommend these to colleagues if they are eligible and have a passion about excellent teaching and learning in their classrooms.

I shall be more than happy to share some of my resources with colleagues who may have an interest in these areas. These will be put up soon on the AST/CLT website. Keep looking.

Click HERE to take you directly to it or use the Links under Blogroll in the margin on the right.

YEAR 10

Click Here to go direct to the AQA website for Year 10 Objective tests – question papers, markschemes and test sheets. You will also find here the specimen papers too.

 Note : You should be able to get more recent papers from your teachers, which you can use to help you in your revision/preparation.

Top Tip!  

According to Chief Examiners the two most common reasons for losing marks in exams are:

• Misreading the question
• Answering the question you would like to have been asked, instead of the one you have actually been asked.

Not many people used to know that Ozone is simply a bluish gas composed of three oxygen atoms! It is harmful to breathe, but absorbs ultraviolet radiation that harms living organisms, acting like a filter really. The Ozone Layer in the Stratosphere filters out harmful Ultra-Violet, UV rays coming from the Sun so that they do not reach the Earth and so us. UV rays can cause skin cancer. A hole in the Ozone layer due to, for example, Cholorofluorocarbons, CFCs, which react with and destroy the Ozone layer, means more harmful UV rays can pass through the atmosphere and reach us, causing potential harm.  Some people think the hole is a small area only, eg  a few football pitches at most - read the article provided in the link below and be amazed at its size. (Did you know it was this big?)

” The hole in the ozone layer over Antarctica this year is the fifth biggest on record, according to the latest data from NASA’s atmospheric scientists.” Click HERE to find out more.

Questions:

1. What is Melanin and how does it protect people with high amounts from the Sun’s (which?) radiation?

2. What other gases harm the Ozone Layer and what have the CFCs been replaced with in the refrigeration industry?

Extension Questions :

3. Why do you think animal life on land only evolved after plant life? (Clue – think of photosynthesis and …. O and UV,  etc)

4. Can you suggest reasons for this increase in the hole for this year and the implications this size may have?

Recently, 8Q and 8V have been studying Atoms and Elements including the Periodic Table.

Demetri Mendeleev developed the first periodic table in the late 1800’s. He organised it in order of increasing atomic masses. The element with Atomic Number, Z=101, called Mendelevium, Md, is named in honour of him. Earlier attempts to organise the elements were not so successful because some scientists were too arrogant and believed they had discovered all the elements ever!! How wrong they were. This led to some elements being categorised with completely wrong groups of elements in their attempts to group elements together. There were “Triads” and “Octets” but none were very successful. Mendeleev did not believe that all elements had been discovered and openly said this. He also predicted what these elements would look like and how they would react chemically based on the empty spaces he left for them on his Periodic Table of columns called GROUPS, (where elements showed similar properties) and rows called PERIODS, (where physical properties showed a periodic change). An example of such an element was Germanium. When it was discovered, it had exactly the type of properties that Mendeleev said it would have.

A Further Development:

A very few elements still were not exactly in the right places. This problem was solved by Henry Moseley, an English scientist in 1913. He developed our modern Periodic Table which we use now. This is arranged in increasing atomic number (= number of protons), not atomic masses.

If you click Here, you will be taken to an excellent website on the various elements and see fascinating videos of their properties. I wrote to the authors suggesting that they reconsider changing the title at the top – Can you explain why? – write a comment – but they wrote back to say they would not do it now.