____ Are Short Boards Fastened to the Side of a Ceiling

question 2

Multiple Choice

____ are short boards fastened to the side of a ceiling joist and centered on the joint.

• A) Trimmers
• B) Jacks
• C) Scabs
• D) Headers

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Definitions:

Colour Vision

The capability of an organism's visual system to distinguish objects based on the wavelengths (or frequencies) of the light they reflect, emit, or transmit.

Wavelengths

The space separating consecutive wave peaks, especially in the context of sound or electromagnetic waves.

Physical Stimulus

An external event or factor that influences a physical response or reaction in an organism.

Light

Electromagnetic radiation within a certain portion of the electromagnetic spectrum, visible to the human eye and responsible for the sense of sight.