I have outlined how I would approach this question below:
Given Apparatus: Lamp, Stopwatch, Meter Rule, Thermometer
Dependent Variable- Temperature of the surroundings
Independent Variable- Lamp Type
Control Variables- Distance of thermometer from lamp, Starting temperature, Time between initial and final measurement of temperature
The independent variable is what we are varying, and the dependent variable is what we are measuring.
These are the steps I would use:
1. Set up the apparatus using lamp 1 and take the starting temperature.
2. Turn the lamp on and start the stopwatch.
3. Record the temperature of the surroundings when the stopwatch reaches 5 minutes and record the difference between this temperature and the starting temperature (the difference is more reliable as the starting temperatures may be different).
Two great answers - Read both @Sriram A and @Hassan Bajwa posts as their answers would give you full marks for this question. Hassan included a very good bit about safety and equipment at the end of his answer! Sriram also explained the variables very well so you should be able to understanding the fundamentals of the question better as well.
2
Unknown member
Jul 07, 2020
Hi “hi” lol, thanks for the questionThis won’t be the only answer given the nature of the question, and my colleagues may answer with some other variations. Feel free to send your answer in and one of us will evaluate it.My answer would be:2. Turn Lamp 1 on.3. Use the stopwatch to see when 30 seconds have passed. Measure the temperature on the thermometer, and record this in a table.4. Repeat with the other lamps, turning off the power to the lamp before changing it, and waiting for the temperature to return to the initial temperature before repeating with a new lamp.If you tell me your level (i.e. GCSE, A level etc), I can make the answer more accurate as each level may require different levels of detail.In general, it’s good technique in these questions to refer to the equipment (lamp, thermometer), and to safety (like turning off electrical components when they are not needed). Also, it‘s recommended to choose a good repeat time- a good time frame will give between 5 and 10 results which can then be plotted on a graph. Make sure that you read the question carefully to see exactly what the aim of the experiment is, and double check after answering to ensure you meet that fully.
Hi there,
I have outlined how I would approach this question below:
Given Apparatus: Lamp, Stopwatch, Meter Rule, Thermometer
Dependent Variable- Temperature of the surroundings
Independent Variable- Lamp Type
Control Variables- Distance of thermometer from lamp, Starting temperature, Time between initial and final measurement of temperature
The independent variable is what we are varying, and the dependent variable is what we are measuring.
These are the steps I would use:
1. Set up the apparatus using lamp 1 and take the starting temperature.
2. Turn the lamp on and start the stopwatch.
3. Record the temperature of the surroundings when the stopwatch reaches 5 minutes and record the difference between this temperature and the starting temperature (the difference is more reliable as the starting temperatures may be different).
4. Repeat the experiment with the other lamps.
If you have any further questions please reply.
Two great answers - Read both @Sriram A and @Hassan Bajwa posts as their answers would give you full marks for this question. Hassan included a very good bit about safety and equipment at the end of his answer! Sriram also explained the variables very well so you should be able to understanding the fundamentals of the question better as well.
Hi “hi” lol, thanks for the question This won’t be the only answer given the nature of the question, and my colleagues may answer with some other variations. Feel free to send your answer in and one of us will evaluate it. My answer would be: 2. Turn Lamp 1 on. 3. Use the stopwatch to see when 30 seconds have passed. Measure the temperature on the thermometer, and record this in a table. 4. Repeat with the other lamps, turning off the power to the lamp before changing it, and waiting for the temperature to return to the initial temperature before repeating with a new lamp. If you tell me your level (i.e. GCSE, A level etc), I can make the answer more accurate as each level may require different levels of detail. In general, it’s good technique in these questions to refer to the equipment (lamp, thermometer), and to safety (like turning off electrical components when they are not needed). Also, it‘s recommended to choose a good repeat time- a good time frame will give between 5 and 10 results which can then be plotted on a graph. Make sure that you read the question carefully to see exactly what the aim of the experiment is, and double check after answering to ensure you meet that fully.