The solar constant is a. the same for a sphere or for a circle. b. only about a quarter of all energy emitted by the sun. c. a consistent amount of energy received at the top of the atmosphere. d. the same value for all planets, even Neptune.

30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve

3. which is not a primary color of light? blue red green yellow

Due in 40 explain in terms of frame of reference if you’re inside a moving train everything on the outside can seem to be moving