Science Vocabulary #3

Based on the definitions guess these vocabulary words from the world of science.
To make it easier, we give you the first letter of the answer
Quiz by Quizmaster
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Last updated: June 24, 2020
First submittedMay 17, 2016
Times taken16,467
Rating4.16
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Definition
Letter
Word
Group of stars bound together by gravity
G
Galaxy
How a liquid becomes a gas
E
Evaporation
The plants and animals at the bottom of the ocean's food chain
P
Plankton
Rock from which minerals can be economically extracted
O
Ore
Describes an animal that is primarily active at night
N
Nocturnal
The fourth state of matter. The sun is made of it
P
Plasma
Type of plant, such as soybeans or lentils, whose fruit comes in a pod
L
Legume
The percentage of light that is reflected from a surface
A
Albedo
Organism that has both male and female sex organs
H
Hermaphrodite
How bats navigate using sound
E
Echolocation
One of two veins that return blood from the head to the heart
J
Jugular
Approximately 6.02 x 1023 atoms
M
Mole
Varation of an atom that has a different number of neutrons
I
Isotope
Element with the highest melting point, used in lightbulb filaments
T
Tungsten
A planet which exists outside of our Solar System
E
Exoplanet
The division of a cell nucleus and the copying of the genome
M
Mitosis
Capable of being pulled or stretched into a thin wire
D
Ductile
Describes trees that lose their leaves in the winter
D
Deciduous
Half of the earth or half of the brain
H
Hemisphere
Half the distance between the crest and trough of a wave
A
Amplitude
+4
Level 80
May 17, 2016
"Group of stars" is a bit vague. For example, beginning with G, a globular cluster would also fit. Maybe specify that there must be billions of stars?
+1
Level ∞
May 18, 2016
According to Wikipedia, some galaxies have just a few thousand stars.
+1
Level 80
May 18, 2016
Ok... it's sometimes hard to classify some strange stellar structures. Still, usually, the little ones are rather called cluster. One way to get round this would be to ask for one-word answers (or maybe to allow globular cluster...).
+1
Level 80
May 18, 2016
On a different matter, I just saw that you forgot an i in "Variation" ;).
+1
Level 69
Oct 14, 2017
Giant elliptical galaxies have very little (if any) gas and dust, and nearly all stars are small yellow and red dwarfs.
+3
Level 71
May 18, 2016
Unless it was recently changed, Galaxy is guessed at a 96% rate and is the answer guessed correctly most of the time. I think the wording is fine.
+2
Level 80
May 18, 2016
The fact that everybody finds the expected answer doesn't prove that it is the only possible answer... Furthermore, in this case, I think the picture helps.
+1
Level 50
Jan 11, 2017
It took me a good twenty seconds to get past globular cluster.
+2
Level 78
Dec 19, 2016
A mole doesn't have to be atoms, it is just 6.02 x 10^23 of anything.
+1
Level 59
Mar 2, 2018
Perhaps. But you wouldn't want a mole of moles... https://what-if.xkcd.com/4/
+5
Level 58
Dec 19, 2016
My ignorant guess of "molecule" pays off halfway through...
+2
Level 78
Dec 19, 2016
+1
+2
Level 65
Dec 19, 2016
+2
+2
Level 49
Dec 19, 2016
I'm curious as to why tungsten is listed as the element with the highest melting point. I've always been taught that carbon had a higher melting point, but due to the earth's atmosphere, it sublimates. Should it be changed to carbon instead of tungsten, or is terminology important here?
+3
Level 69
Dec 19, 2016
You're right, Tungsten/Wolfram has the highest melting point of element metals, but Carbon is the highest for all elements :-)
+1
Level 59
Nov 20, 2018
Tungsten does have the highest known boiling point of any element though.
+1
Level 70
Dec 19, 2016
Should be spelled "variation" for the isotope question
+1
Level 42
Dec 19, 2016
Tungsten is incorrect, carbon has the highest melting point. It's the METAL with the highest melting point (in pure form), not element.
+2
Level 69
Oct 14, 2017
Carbon sublimates. And anyway, Tungsten is the one used for lightbulbs.
+1
Level 78
Dec 24, 2016
"Varation" should be "Variation".
+1
Level 69
Jun 28, 2017
Could you also add vaporization for #2? I am pretty sure that is the term for when a liquid heats up enough to become a gas.
+1
Level 73
Aug 24, 2017
Perhaps, but it does not start with E...
+1
Level 69
Oct 14, 2017
The scientific term for boiling liquids turning to gases is vaporization.
+1
Level 71
Apr 24, 2018
The sun is a miasma / Of incandescent plasma / The sun's not simply made out of gas / No, no, no
+2
Level 64
Sep 4, 2018
Could the clue for deciduous be changed to trees that shed their leaves seasonally? In India deciduous trees shed their leaves in the summer before the monsoon
+1
Level 27
Feb 12, 2019
It is generally the case that amplitude refers to the value between the centre point of the wave to the trough or the peak.
+1
Level 52
Jun 23, 2020
Yes, seconded. Crest to trough would be twice the amplitude of a wave.
+1
Level ∞
Jun 24, 2020
Fixed
+1
Level 55
Jun 29, 2019
Ignorant I know, but what is a mole? (not the creature)
+1
Level 28
Jul 28, 2020
unit of measurement in chemistry
+1
Level 65
Dec 18, 2019
Extrasolar should count too.