List of Words for Letter ‘I’

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igneous rock A rock that forms when melted rock cools and hardens.
inclined plane A simple machine with a flat slanted surface that is raised at one end.
A ramp is an inclined plane.
inherited trait A characteristic that is passed from parents to offspring.
A flower’s color is an inherited trait.
insulator A material that heat or electric current does not move through easily.
Plastic is a good insulator of electric current.
invertebrate An animal that does not have a backbone.