invisible waves that travel through space emitted by celestial objects. Stars emit visible light. ( violet the shortest and red the longest) each type of electromagnetic wave has a different frequency and a different wavelength. Violet / Blue / Green / Yellow / Orange / Red Frequency - the #...
Science: Do a worksheet, front and back. French: (A) Study new words for tomorrow’s test. It’s going to be a long night.This happens to students in America. Now it’s time to start a homework revolution(变革).Do students in the United States receive too much homework? According ...