Question

Earth Sceince help

Answer 1

What is a hydrometer used for?
(Points : 3)
to measure specific gravity of liquids
to measure distance
to pry rocks open
to determine the mineralogical content of rocks


11. You are using direct observation when a friend tells you how nice her hotel was on her vacation.
(Points : 2)
True
False


12. What might happen if you change measuring devices halfway through an investigation?
(Points : 3)
discrepancies and errors in measurement
increased measurement accuracy
improved results because of different measuring tools
reduce

Answer 2

Direct observation does not involve engaging in the said practice or activity, but rather watching as it is being done.. so 11 should be..?

Answer 3

false