Four groups of students plan scientific investigations to answer four questions for the science fair. Which question would most likely be answered with an experimental investigation? 1 2 3 4

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

What energy is it when you flip on a switch on a lamp

The identities of substances are the same before and after which type of change