This week, we’ve looked at calculating radiation doses.  The absorbed dose D, measured in Grays (Gy), takes into account the energy E absorbed and the mass m of the absorbing tissue. The higher the energy, the greater the absorbed dose.  If you are wondering why the absorbing mass is important, consider the different masses of ... Read more

Here is the second set of revision notes for your test.

This is the first of two posts with summary notes to help you prepare for the unit assessment next week.  Don’t forget that there are also nice notes with built-in tests on BBC Bitesize.

We’ve been looking at the risks and benefits of space exploration. Tim Peake, the British astronaut about to start work on the International Space Station, appeared on The One Show last week to talk about his training for the mission.   Interview with Tim Peake before he goes to the International Space Station from mr ... Read more

Here are some summary notes to help with your revision for the waves and radiation unit assessment.  Your test is scheduled for Friday 24th April. Extra revision materials and questions are available on BBC Bitesize.

Here are the solutions to the electricity and energy questions. Remember that these sample questions & answers do not cover all of the key areas within the unit and you should work through the notes I provided earlier.

Here are some old exam questions to help you to prepare for the resit of the E&E unit assessment.  Your resit is scheduled for Thursday of this week (see calendar dates on right of the screen).  You will get more thorough coverage of the appropriate key areas if you work through the BBC Bitesize pages ... Read more

Here are the solutions to the revision questions.  Please try answering the questions before downloading these answers.

If you have to resit any of the national 4 unit assessments, the test paper will only contain knowledge questions.  The revision material on BBC Bitesize has multiple choice test questions but you should also practise making accurate statements if you want to pass the test. Here is a selection of suitable questions I have ... Read more

We spoke about the eclipse in class today.  It’s really important that you follow advice for watching the eclipse safely to avoid permanent damage to your eyes. You can buy eclipse viewing glasses online.  They look like this and only cost a few pounds per pair.  Make sure any glasses you buy have the CE mark ... Read more