Question

Aa means "a kind of volcanic lava that forms jagged masses with a light frothy texture; in an unrelated sense ('a stream') aa is the first entry in the Oxford English Dictionary."

a) True
b) False

Answer 1

The statement is true. 'Aa' refers to both a type of volcanic lava and the first entry in the Oxford English Dictionary. Volcanic ash and agglomerate are different byproducts of volcanic eruptions.

Step-by-step explanation:

The statement is true. 'Aa' does indeed refer to a type of volcanic lava characterized by a rough, jagged surface, which is in direct contrast to pahoehoe, another type of lava that has a smooth, billowy, or ropy surface. The term 'aa' also has significance linguistically as it is often cited as the first word in the Oxford English Dictionary, representing the unrelated meaning as a type of stream. While 'aa' is a term associated with volcanic activity, volcanic ash and agglomerate are different components that result from volcanic activity. Volcanic ash pertains to the tiny particles ejected during an eruption, measuring less than 2 millimeters in diameter, whereas agglomerate is composed of larger volcanic fragments, over 2 centimeters in diameter, which are also produced from volcanic events.