A longitudinal crack which is usually normal to the annual rings in wood is called-
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A.
Star shakes
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B.
Heart shakes
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C.
Cup shakes
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D.
Checks
Correct Answer:
D. Checks
Explanation:
A check is a type of longitudinal crack in wood that develops across the annual rings, typically caused by uneven seasoning or rapid drying of the outer layers. While shakes like star, heart, and cup shakes generally follow the direction of the growth rings or occur between them due to internal stresses or decay, checks are specifically characterized by their orientation normal to the rings, often originating from the surface.
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