28th October 2010

I hope you feel that you understand the difference between.....

1. E = mass x specific heat capacity x change in temperature

2. E = mass x latent heat

They are two very different things..(1) applies when the temperature is changing and (2) applies when the state is changing.

Homework uses only equation number (1)..and that is page 5 questions 3,4,5,6,8 and 9 due on 2nd November.

Remember what I told you..we are very close to having a big test..so start looking back at unit 1 now....all of it will be tested this time.

Any queries you know where to come.

Mrs M :-)

26th October 2010

A bit late in starting due to the assembly and House assembly. However, we did manage to get quite a lot of work done.

The difference between heat (energy) and temperature (a measure of how hot or cold something is ) was established.

We then went on to find the specific heat capacity of water - and it was higher than we expected due to the heat loss to the surroundings.

The equation for the day is E = c x m x change in temperature.

More experiments next lesson.

Assessment on the horizon covering all of Unit 1 so can I suggest you start revising now.

Any questions please ask

Mrs M :-)

Thursday 14th October

Topic completed....in school, but at home you should now be doing some serious revision..there will be a test on the whole unit towards the end of November so you should start NOW looking over this topic and the previous ones. (All the topics in this unit have a pink front cover and so far you will have 3 pink booklets).

Don't forget to do all the efficiency questions....for Tuesday 26th october.

I hope you all have a great break.

Bye for now

Mrs M :-)

Monday 11th October

I think you have grasped the idea of reaction time and time to stop.....

Potential energy to Kinetic energy took up the remainder of the day....don't forget that if you ignore air resistance then they will fall to earth at the same time no matter the mass. In real life friction does have an impact (as we showed in our experiment).

Give your best attempt at questions 1 and 2 on page 29 - due on Thursday... see me if you have any queries.

Mrs M :-)

Thursday 7th October 2010

A different way to go over homework...but I hope it was fun and that importantly you got the correct message from the answers. Use the other questions as a revision tool. We won't do that every time....but now and again makes it a special treat. Sorry about the ginger bread men..oranges next time I promise.

Remember your total stopping distance is a mixture of the distance you travel while reacting plus the distance you cover as you are braking to a stop.

Homework will help you with this....so for Monday page 21 - Section called questions nos 1 to 4

Great work as always....everyone bring their homework on Monday

Mrs M :-)

Tuesday 5th October

FANTASTIC!!!!! AMAZING !!!!! WELL DONE !!!!!

Your confidence has come on so much. You are happy with so many ideas / concepts that last year you were too worried to attempt.

I am SO pleased for you :-)

Now we know....Kinetic Energy, Work Done energy, Gravitational Potential Energy and Power..

In class we were working on the following questions which you will finish for Thursday...usual drill..no excuses..need help then come and ask.

The questions are
p12 nos 4,5,6
p14 nos 6 to 10
p 16 nos 4,5
p21 (Kinetic Energy Questions) nos 2 and 4

Keep going :-)

Mrs M :-)