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Monday, February 21, 2011
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Monday, February 7, 2011
Year 7 Electrical Circuits Task Extra Help
Answer these questions to help you gain marks in Task 3
1. What part of the model represents the battery
2. What part of the model represents the bulbs?
3. What part of the model represents the electrical wires?
4. What part of the model represents the electrons?
5. How is the current shown in this model?
6. How is the voltage shown in this model?
7. How would you represent a switch?
8. How would this model help you to explain what happens to the current if another bulb is added?
9. How would this model help you to explain what happens to the voltage if another bulb is added?
10. Evaluate this model (what do you think are the good and bad parts of the model?)
Year 7 Electrical Circuits Task
Task 1
You are an electrician and you have been asked to install a light in a kitchen that has two doors. You need to make a circuit where the light can be turned off by each door.
They should work separately so that either switch can will turn the light on and off.
To gain marks you must (Levels 4 and 5)
Draw a circuit diagram and describe how the circuit works
Labelled the parts of the circuit and describe what they do
Three Way Switch Demo
Task 2
Now you need to make a circuit for the house that has a light in each room. There are 5 rooms in total. Each light must be able to be turned on and off independently of each other.
To gain marks you must (Levels 4 and 5)
Choose a good way to present the data
Described the process that make circuits work using correct terms eg. current, energy
Correctly draw circuit symbols and circuit diagrams
Task 3
You are going to create your own model for electricity. It can take any form you like but remember to label what each bit stands for (see diagram). Think about the train idea on page 141 of your books and the model Miss. Kitchen did with the sweets Once you have designed your model, write a paragraph to explain what would happen if you
a) added a switch
b) added another battery
c) added another bulb
d) made it into a parallel circuit
You will gain the best marks if you use your model to explain how a proper electrical circuit would work
To gain marks you could
Level 4 – Drawn a model based on the example. Some detail included in the written explanation.
Level 5 – Come up with your own model that is clearly labelled and well explained.
Level 6 – Designed an original model that is clearly labelled. Explain how the model is like an electrical circuit. Use of the terms such as voltage and current.
To get more marks you could then....
Once you have designed your model, write a paragraph to explain what would happen if you
a) added a switch
b) added another battery
c) added another bulb
d) made it into a parallel circuit
Sticky Fingers Year 9
Your task is to research
1. The history of fingerprinting using the internet.
Find out how the technique has changed over the years and the most current methods used.
2. The different types if fingerprints and explain how a fingerprint can be classified and matched to an individual. Include any environmental effects that may add to the uniqueness of an individual's fingerprints.
How to get the marks….
Level 5• Describe why a fingerprint is left behind and why powder and tape can be used to pick it up again
• Described how advance in fingerprinting and the way in which fingerprints are stored have led to people being identified more quickly more quickly and easily
• Describe how some people think it may be against their human rights to be asked to give fingerprint samples
• Presented my data as photographs and a table explaining some of the patterns seen in fingerprints
• Used scientific and mathematical words when describing how sweat in fingerprints can be detected eg. ninhydrin reaction
Level 6
• Described how different people have used fingerprinting over the years
• Explained how the development of fingerprinting techniques has affected different groups of people eg. Police, criminals
• Explained that fingerprinting evidence can only be used to establish a connection between an object or place and a person, and needs other evidence that someone has committed a crime
• Described the technological advances and changes in fingerprinting techniques
Level 7
• Describe the advantages and disadvantages of using fingerprinting to identify individuals, including expense, accuracy and the effects on people's lives
• Used symbols, flow charts and different kinds of graphs to represent ideas
• Explained how people have thought creatively to come up with new ideas to identify people eg. toe prints, sweat samples, facial recognition software
• Explain in detail why everyone has an individual fingerprint
• Describe whether you feel that fingerprinting has had good or bad effects on society and why you have that opinion
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