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1
What is the chemical formula for carbon dioxide?
C02
C2O
CO
81% got this right
2
What is the hardest natural substance on earth?
Diamond
Graphite
Quartz
78% got this right
3
Which planet is known as the red planet?
Mars
Jupiter
Mercury
78% got this right
4
What is the power house of the cell?
Mitochondria
Nucleus
Ribosome
55% got this right
5
What is the Earth's outmost layer called?
Crust
Core
Mantle
58% got this right
6
What is the process of water vapor turning into liquid water called?
Condensation
Evaporation
Precipitation
51% got this right
7
What is the layer of gases surrounding the earth called?
Atmosphere
Biosphere
Hydrosphere
79% got this right
8
Which of the following is not a type of rock?
Bioluminescent
Igneous
Metamorphic
64% got this right
9
How many bones are there in the human body?
206
106
150
75% got this right
10
How many teeth does an adult have?
32
24
28
