00:01
Hello students, for the first question we have to say true or false.
00:04
Here low specific gravity minerals will drop out of moving water first if the water speed decreases.
00:10
So this is a false statement because if the water speed decreases means only high specific gravity materials will drop off.
00:19
High specific gravity materials will drop off.
00:33
So the first statement is a false statement and the second one is gemstones with high specific gravities and hardness tend to become concentrated in secondary deposit.
00:43
So this is a true statement.
00:45
They are concentrated in secondary deposits and question number four since question number three is not present here let's move to the question number four.
00:56
A type of deposit where gems and metals settle after being released from a rock.
01:02
So the answer is option c secondary deposit.
01:06
So this is what given in the question two.
01:10
So answer is option c secondary deposit and question number five.
01:16
A pair of geologic process required for gemstones to become concentrated in an alluvial environment is option b weathering and erosion.
01:29
Weathering and erosion.
01:33
For question number six the statement we have to find which of the statement below is not true.
01:42
So from the given statements the option a gems crystallize are formed from magma but not lava but not from lava.
02:05
This is a wrong statement because gems do form from lava.
02:11
So this statement is the false statement and the seventh question.
02:16
Agate and opal forms from fluids in a cavity and are most commonly found in this type of environment...