What is the symbiosis between a fungus and an alga called?
Anonymous Quiz
21%
Mycorrhiza
46%
Lichen
14%
Epiphyte
20%
Obligate parasitism
Which metal is liquid at room temperature?
Anonymous Quiz
5%
Gallium
8%
Caesium
84%
Mercury
3%
Bromine
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What is a neutrino?
Anonymous Quiz
23%
A neutral proton
69%
A subatomic particle with near-zero mass and no charge
5%
A massless photon
3%
A type of quark
Which earthquake waves travel through fluids?
Anonymous Quiz
29%
P-waves (longitudinal)
48%
S-waves (transverse)
20%
Rayleigh waves
3%
Love waves
What is the chemical formula of sodium chloride (table salt)?
Anonymous Quiz
10%
NaOH
84%
NaCl
4%
Na₂O
2%
NaHCO₃
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What does the law of conservation of mass state?
Anonymous Quiz
55%
The total mass of reactants equals the total mass of products
38%
Energy cannot be created or destroyed
7%
Gas speed is inversely proportional to molar mass
1%
Heat flows from hot to cold bodies
Which phenomenon allows plants to move water from roots to leaves?
Anonymous Quiz
19%
Reverse osmosis
24%
Capillarity and surface tension
55%
Root osmotic pressure and cohesion-tension
2%
Gravity alone
Which planet rotates in a retrograde direction?
Anonymous Quiz
17%
Mars
42%
Saturn
30%
Venus
11%
Neptune
What is water photolysis?
Anonymous Quiz
6%
Breakdown of water by heat
72%
Splitting of water using light energy in photosynthesis
11%
Evaporation of water from leaves
10%
Reduction of H₂O to hydrogen
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Which rock forms from the metamorphism of limestone?
Anonymous Quiz
34%
Granite
13%
Gneiss
37%
Marble
16%
Quartzite
What is an electromagnetic field?
Anonymous Quiz
23%
Gravitational force between charges
54%
A disturbance of space generated by charges and currents
5%
Surface tension of water
19%
Force field of permanent magnets
Which brain structure produces hormones?
Anonymous Quiz
9%
Hippocampus
26%
Cerebellum
63%
Pituitary gland (hypophysis)
2%
Amygdala
What is the Heisenberg uncertainty principle?
Anonymous Quiz
65%
You cannot simultaneously measure position and momentum of a particle with arbitrary precision
28%
The energy of a particle is always uncertain
4%
A particle cannot be in two states at once
2%
Light has no mass
What reagent is used to detect CO₂ in an experiment?
Anonymous Quiz
58%
Limewater (Ca(OH)₂)
26%
Hydrogen peroxide
13%
Phenolphthalein
3%
Universal indicator
What is a coral reef ecosystem?
Anonymous Quiz
12%
An underwater desert
70%
One of Earth's most biodiverse ecosystems
14%
An ecosystem devoid of vertebrates
5%
A form of mass parasitism
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