Which best describes the movement of a fluid during convection? a. warm & cool fluids rise b. warm & fluids sink c. warm fluid rises & cool fluid sinks d. warm fluid sinks & cool fluid rises

Estimate the schwarzschild radius (in kilometers) for a mini-black hole formed when a superadvanced civilization decides to punish you (unfairly) by squeezing you until you become so small that you disappear inside your own event horizon. (assume that the your weight is 50 kg)

What effects result when there is an impact between earth and an asteroid? check all that apply. a.massive flooding. b.extinction of many life forms.c.major earthquakes change in average global temperature.d. giant dust cloud

Which of the following bonds would be most polar? a. c-i b. c-br c. c-cl d. c-f e. c-o