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Science Quiz #31

Science and Nature Quiz for 19 August 2009

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

What is the name for the displacement at, or height of, each crest of a sound wave?

A
Wavelength
B
Frequency
C
Amplitude
D
Power
Select from the options above.
2

What name is given to the unit of electrical power represented by a current of 1 ampere flowing through a circuit whose potential difference is 1 volt?

A
Ohm
B
Watt
C
Kilowatt
D
Amstrong
Select from the options above.
3

What is the most common colour of a topaz?

A
Green
B
Blue
C
Yellow
D
Brown
Select from the options above.
4

Which tree native to Mexico, South America and Central America, part of a family of flowering plants, produces a fruit (technically a large berry) that contains a pit which may be egg-shaped or spherical?

A
Avocado
B
Chinese Gooseberry (or Kiwi)
C
Pear
D
Banana
Select from the options above.
5

What is the study of fishes?

A
Palaeontology
B
Ichthyology
C
Entomology
D
Taxonomy
Select from the options above.
6

What are rotating stars that emit a beam of electromagnetic radiation that can only be observed when the beam of emission is pointing towards the Earth, which is called "the lighthouse effect"?

A
Red dwarfs
B
Pulsars
C
Black holes
D
Nebulae
Select from the options above.
7

What is added to water to make brine?

A
Sugar
B
Salt
C
Milk
D
Packet soup
Select from the options above.
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