Which refers to information gathered by the systematic study of nature? prediction
communication of facts
scientific knowledge
hypothesis

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a. true or b. false

Which magnetic property best describes a magnet’s ability to act at a distance? magnets are dipolar. magnets attract only certain objects. magnets have magnetic fields. magnets can transfer their properties to certain materials.