RESEARCH METHODOLOGY

Detailed explanation-1: -So a testable question looks like this: “What is the effect of soil type on plant height?” Controls are all the things in your experiment that you want to stay the same. “What is the effect of soil type on plant height?”

Detailed explanation-2: -Does changing the height of a ramp affect how far a car will travel? Does the type of liquid affect how fast ice will melt? Does the type of shoe worn during a 20 yard dash affect the speed in which you can run? Does changing the size of a paper airplane affect how far it flies?

Detailed explanation-3: -Testable questions are ones which can be answered through experimental inquiry and observation of the natural world. Questions that cannot be answered by direct observation or by evidence gathered through experimental inquiries (i.e., “why…” questions), are not testable questions.

Detailed explanation-4: -Does salt affect the freezing rate of water? Does wind speed affect the evaporation rate of water? Does the rotation of the earth (time of the day) affect the length of a shadow? Does the kind of water (fresh or salt) affect how long it takes an ice cube to melt?