Astronomers have discovered vast differences in stars throught their observations. One theory used to explain these differences is that. 1. the distances between stars are vast
2. stars are at different points in their life cycles
3. earths atmosphere distorts our view of the stars
4. there is to much light pollution on earth to sturdy stars

Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.

Will a solution form when the solvent and solute are both nonpolar? a. not likely b. never c. most likely

When an experimenter draws a conclusion that he assumes will apply to all situations set up similarly to his test situation, even though he cannot possibly have examined all possible test scenarios, the experimenter is using deductive reasoning inductive reasoning abductive reasoning subjective reasoning