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Science Quiz #423

Science and Nature Quiz for 22 February 2017

A new science quiz is available each week. Try our daily general knowledge quiz or work through our archive of daily and themed quizzes.

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1

In probability theory and statistics, what is a measure of the variability or dispersion of a population, a data set, or a probability distribution?

A
Standard deviation
B
A posteriori probability
C
Index of dispersion
D
Regression discontinuity
Select from the options above.
2

As reported in the November 2016 issue of the international science journal, Nature, what animals particularly like being tickled?

A
Horses
B
Mice
C
Hedgehogs
D
Rats
Select from the options above.
3

What is special about many of the ants which belong to the tribe known as Attini?

A
They are fungus-growing
B
They develop soldier ants
C
They have poisonous stings
D
They build conical nests above ground
Select from the options above.
4

What is cupping used for in medicine?

A
To form a mortar for pounding herbs
B
To deliver blood
C
To create suction on parts of the skin
D
To heat patches of skin
Select from the options above.
5

Why do haloclines occur?

A
Weathering of rock by growth of salt crystals
B
When seawater salinities differ, forming a vertical area of increasingly saltier and denser waters
C
Volcanic eruptions under water or ice
D
Where the structure in the vitreous body of the eye is disrupted
Select from the options above.
6

What is the name for the point on the earth's surface that is directly above an earthquake?

A
Epilogue
B
Epcot centre
C
Epicentre
D
Epidemic
Select from the options above.
7

Where is the incus found in the human body?

A
The big toe
B
The ring finger
C
Ear
D
The base of the spine
Select from the options above.
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