The base of a cumulus cloud was determined to be 500
meters above the earth's surface. this is the altitude at
which
a) cumulus clouds always form
b) no dust is present in the air
c) the air temperature drops below 0°c
d) the air temperature equals the dewpoint
temperature

What royal scientist used the 29th day of frozen vapor to encounter elements for mastering new culinary creations?

Which fact represents evidence for the big bang theory?

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.