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Science General Knowledge #1

Answer these general knowledge questions about science topics.
Quiz by Kestrana
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Last updated: March 2, 2016
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First submittedMarch 2, 2016
Times taken5,736
Average score55.0%
Rating3.85
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Question
Answer
What is the name of a listing of all the chemical elements?
Periodic table
What is the chemical formula for water?
H2O
What device did Galileo famously improve?
Telescope
What is the hardest substance found on Earth?
Diamond
Magnesium is the central ingredient in what important plant substance?
Chlorophyll
What type of mineral has replaced lead in pencils?
Graphite
What is the unit for measuring the amplitude of sound?
Decibel
What element is added to cooking gas to give it a noticable odor?
Sulphur
What everyday device are quartz crystals most commonly used in?
Watches
In percent, what is the average salinity of sea water?
3.5%
A descending barometer is an indication of what type of precipitation?
Rain
How many feet are in a fathom?
6
What name is given to the group of metals that includes Iron, Cobalt and Nickel?
Transition metals
What gas usually fills light bulbs?
Nitrogen
The nucleus of an atom contains protons and what other particle?
Neutrons
What type of star is smaller than a Red Giant but larger than a Yellow Dwarf?
Blue Dwarf
Which uranium isotope is capable of sustaining a chain reaction?
U-235
What is the only metal that is liquid at room temperature?
Mercury
What astronomer first postulated that the Sun was the center of the universe?
Copernicus
What does a chronometer measure?
Time
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4 Comments
partdavid
+2
Level 72
Dec 30, 2020
I hadn't heard of a blue dwarf. It's apparently a theorized type of (red dwarf) star that doesn't actually exist (yet). I'm not sure what a better answer is for this question--a few minutes' research on Wikipedia revealed that there is more nuance and variation to these terms than can really be captured in a pithy, interesting question.
Alexquiz17
+1
Level 91
Aug 13, 2021
likewise transition or group d metals

good little quiz though

creepycat
+1
Level 27
Mar 8, 2022
It would be a good idea to mention the system of units while asking for it. In SI the answer would be meter. Decibel is in another system. Nice quiz though!
Toubab
+1
Level 50
Apr 27, 2024
Graphite hasn't replaced lead in pencils because the "lead" in pencils was never actually lead to begin with.
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