Which colour does litmus paper turn with acid

A scientist observes the boundary between two tectonic plates for a decade and finds that no new volcanoes have formed over the course of her investigation. Does this result support the theory of plate tectonics? Why or why not?

Does water cool faster than land

How does light interact with matter

Water, as a polar molecule, has many interesting properties. Which of the following properties is most closely associated with polarity Surface tension Liquid at room temperature Solvent of non-polar substances Shape as a solid

What is the main reason scientists perform experiments a) to summarize experimental information b) to collect scientific data c) to find answers to their questions d) to play with equipment in the lab

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda