1) Investigating the effect of engine size on car speed a) Engine size b) Car speed c) Type of Car d) Distance car travels 2) What is the effect of acid strength on universal indicator colour? a) Amount of acid b) Indicator colour c) Acid strength d) Type of colour 3) How do different elements react with oxygen? a) Strength of reaction b) Element c) Oxygen d) Type of element 4) Measuring how the number of penguins huddling affects heat loss a) Measuring penguins b) Number of penguins c) Heat lost d) Species of penguin 5) How does brightness of light affect photosynthesis a) Length of time under light b) Colour of light c) Speed of photosynthesis d) Light brightness 6) What happens when you add increasing mass to a spring? a) Stretchiness of spring b) Amount of mass c) Length of spring d) Type of mass 7) How is an electromagnet's strength influenced by the amount of coils? a) Number of coils b) Electromagnet's strength c) Influence d) Strength of coils 8) How is gas production in cows affected by the mass of grass they eat, measured in kilograms? a) Kilograms b) Number of cows c) Gas produced d) Mass of grass 9) What is the effect of fuel type on heat given of by spirit burner? a) Spirit burner b) Fuel type c) Heat d) Temperature change 10) What is the best hair dye brand for dying haor blonde? a) Most effective dye b) Cost of dye c) Hair colour d) Brand of dye

Identify the Independent Variable...

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