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Science Quiz #9

Science and Nature Quiz for 18 March 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

Which of these equations accurately represents the relationship between the square of a number and the product of one less and one greater than that number?

A
x2 = (x-1)(x+1)
B
(x2)-1 = (x-1)(x+1)
C
(x2)+1 = (x-1)(x+1)
D
x2 = (x-1)(x+1)-1
Select from the options above.
2

Which of these colours does not appear on a purple finch?

Note: This question was updated in July 2015
A
Purple
B
Brown
C
White
D
Red
Select from the options above.
3

What does an anemometer measure?

A
The strength of an opposing army
B
Sea creatures tentacles
C
Petal sizes of certain perennial flowers
D
Wind velocity
Select from the options above.
4

What is the lowest number that is both the square of one integer and the cube of another?

A
1
B
729
C
64
D
4096
Select from the options above.
5

What is petrology the study of?

A
Oil
B
Rolls
C
Plants
D
Rocks
Select from the options above.
6

What scale initially related wind conditions to their effects on the sails of a man of war, from "sufficient for steerage" to "which canvas sails couldn't withstand."

A
Carvill Index
B
Richter scale
C
Mercalli scale
D
Beaufort scale
Select from the options above.
7

What is a highly magnetized, rotating, neutron star emitting a beam of electromagnetic radiation that can only be observed when the beam of emission is pointing towards the Earth (known as the lighthouse effect)?

A
Nebula
B
Pulsar
C
Nova
D
Red Dwarf
Select from the options above.
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