Table of Contents
Week 1 | KS3 Physics
Day 2 | Energy transfer heating
Day 3 | Conservation of energy
Day 5 | Generating electricity
Week 2 | KS3 Physics
Day 1 | The cost of electricity
Day 2 | Comparing power ratings energy values
Day 5 | Movement of particleswere
Week 3 | KS3 Physics
Day 4 | Friction and resistance
Week 4| KS3 Physics
Week 5| KS3 Physics
Day 1 | Reflection and refraction
Week 6| KS3 Physics
Day 3 | Measuring current and-potential difference
Day 4 | Series parallel circuits
Week 7| KS3 Physics
Day 5 | Day and night and the four seasons
Revision
Series Circuits
- In series circuits = different components connected in a line between the positive and negative ends of the power supply.
- Voltmeters are ALWAYS connected in parallel.
- Remove one component = circuit is broken and stopped
- Potential difference is shared : total voltage = V1 + V2+ V3….
- Current is thesame everywhere: I1 = I2 = I3 …
- Resistance adds up: total Resistance = R1 + R2 + R3 ….
- This is because if you add a resistor, the total amount of resistors must share the total potential difference
- Potential difference across resistor is lower = current is lower . As current in the same everywhere in a series circuit = total current is reduced when a resistor is added= total resistance increases
- Bigger a components resistance = bigger share of total potential difference
- Cell potential differences add up =bigger potential difference when more cells in series.
How long have you…? (present perfect 4) Exercises
Use the information given to create questions beginning with ‘How long…?’
• It is snowing.
• The weather is shining.
• John and Kate are married.
• My brother has gone on holiday.
• My aunty and uncle live in Canada.
• My sister is a teacher.
• I work at the chemist.
• I’ve known Susan since I was a baby.
• Jonathan is learning to speak to Mandarin.
Fill in the missing gaps in the sentences using the present perfect (=has/have + past participle)
• I have known Kate a long time.
• My brother has been playing the piano he was 11 years old.
• My mum and dad on holiday to America. They
gone since last Sunday.
• I Ben and Emma since primary school.
We to the same primary and secondary school.
• My sister learning to speak French because she
is going to France next month.
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have you lived lives to
has been works have known
I have bought have worked.
• My sister in Spain. She is studying Spanish
with her friend Rosie. I Rosie since I was 5.
• Spencer like with Jamie. They have worked
together for 2 years.
• How long in Australia?
• a new dress for prom.
• He to Thorpe park.
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Challenge: Create 4 of your own questions beginning with ‘How long……?’
1.
2.
3.
4.