Science

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1.
1 point
How many layers of the Earth are there
2.
1 point
Is the Earth 70% water or 70% land
3.
1 point
Is Moh's scale about hardness
4.
1 point
Why is the inner core a solid
5.
1 point
What tectonic plate is Australia on
6.
1 point
The inner core is liquid
7.
1 point
Which one is a sedimentary rock
8.
1 point
What is the difference between lava and magma
9.
1 point
How many different mineral species are known to man
10.
1 point
How thick is the mantle