Helloooooooooooooooo!
On my last blog, I told y'all that I have decided to do question 4. But I haven't really explained why I chose that, and why I didn't choose the others. Lemme just analyse these by naming the independent and dependent variables and also listing the things I should consider if doing that question.
the green italiced words = dependent variable
1) What is the effect of the temperature on the solubility of salt?
⚨ amount of solvent
⚨ type of salt
⚨ the amount of air pressure
2) Is the extension of a spring in proportion to the force applied on it?
⚨ different types of weights (5, 10 kg)
⚨ material/type of spring (if it's tight, or loose/floppy)
⚨ where to attach the top end of the spring to
⚨ define extension (length of the spring after hanging the weight minus the length of the spring without any weight hanging from it)
⚨ weights must be within reasonable range (can't be too big, otherwise it'll break the spring, and can't be too small, otherwise it won't cause any changes to the spring)
⚨ measurement (cm)
3) Does the surface of a piece of bread with jam on one side always faces downwards when the bread falls?
⚨ height of fall
⚨ weight of bread
⚨ amount of jam
⚨ surface area of bread
⚨ use same type of jam and bread
4) What colour of light will produce the maximum amount of electricity in a solar panel?
⚨ type of solar panel
⚨ surface area of solar panel
⚨ angle of incidence of light
⚨ amount of light
⚨ type of colour filters
⚨ type of voltmeter and ammeter to measure electricity generated
5) Will the presence of impurities affect the melting point of ice?
⚨ type of impurities
⚨ amount of ice
⚨ shape of ice (ice cube, ice sphere)
⚨ surface area of ice
⚨ type of thermometer
⚨ amount of impurities
⚨ room temperature
6) Does the weight of a pendulum ball affect the number of swings per minute?
⚨ type of pendulum ball (metal, wood)
⚨ shape of pendulum ball (cube, sphere, triangular prism)
⚨ weight of pendulum ball
⚨ length of the string attached to the ball
⚨ height of pendulum ball raised
⚨ type of stop watch (digital, analogue clock)
⚨ environment (steady or not? wind or not?)
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