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Science General Knowledge Quiz - Hard

Can you answer these relatively tough science general knowledge questions?
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Time123
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Last updated: May 14, 2026
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First submittedMay 14, 2026
Times taken16
Average score45.0%
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Hint
Answer
What is the process whereby the ocean is becoming more concentrated with hydrogen ions?
Acidification
E=MC^2 shows how a tiny amount of mass can create a massive amount of what?
Energy
What 9-level scale is used to measure the level of light pollution in an area?
Bortle
The Carrington Event of 1859 was the largest ___ in recorded history.
Solar Storm
Which Swedish biologist's classification system has ranks such as "Kingdom" and "Genus"?
Linnaeus
Nuclei with "___ numbers" (ex. 20 and 82) of nucleons are exceptionally stable.
Magic
What organelle in a plant cell is the primary site of photosynthesis?
Chloroplast
What is 13 equivalent to in binary?
1101
The San Francisco Earthquake had a magnitude of around 7.9 on what scale?
Richter
An example of climate ___ is planting mangroves in order to reduce the effect of flooding.
Mitigation
What percent of the air is made up of nitrogen?
78
How many valence electrons does an alkaline earth metal have?
2
Whose principle of classical mechanics describes a system's motion using energy?
Lagrange
What scale is used to measure the relative scratch resistance of minerals?
Mohs
What element is a diamond made up of?
Carbon
What is acceleration due to gravity on Earth in meters per second squared?
9.81
How many bits are in 3 bytes?
24
What programming system shares its name with a version of Minecraft?
Java
___ bonds are used to hold water molecules together.
Hydrogen
How much force in Newtons is required to accelerate a 1,000 kg car at a rate of 3 meters per second squared?
3000
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