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Questions and Answers
Which method is not used for showing density in scientific drawings?
Which technique is used to visualize an underlying structure in a scientific drawing?
Which method involves using a series of dots to represent density?
Cross-hatching is primarily used for which of the following purposes in scientific drawings?
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Which method is used to create texture effects in scientific drawings?
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Is it acceptable to have arrowheads on label lines in scientific drawings?
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How must labels be written on a scientific drawing?
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Which is a false statement regarding label lines in scientific drawings?
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What is a requirement for producing scientific drawings?
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Which practice is incorrect when creating scientific labels?
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What is the only tool mentioned for drawing scientific diagrams?
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Which statement correctly represents the requirement for the visual appeal of scientific drawings?
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What attribute must all scientific drawings possess besides simplicity?
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Which of the following is false about the requirements for scientific drawings?
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Why might the use of colored pencils be discouraged in scientific diagrams?
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Which part of Diagram B represents the main support structure in the leaf?
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In Diagram A, what structure connects the leaf to the stem of the plant?
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Which labeled part in Diagram B indicates the area where new growth can occur?
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What feature differentiates Diagram B from Diagram A in terms of venation?
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Which part of a leaf can be identified by both diagrams as being labeled, despite differences in complexity?
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What is a common disadvantage of using soft pencils in scientific drawings that relates to the maintenance required?
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Why might the lines produced by a soft pencil be problematic for scientific drawings?
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Which is NOT a reason for preferring medium hardness (HB) pencils over soft pencils for scientific drawings?
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Which of the following is an issue with the structural integrity of soft pencils during use?
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Aside from maintenance, what is another practical reason for using HB pencils instead of soft pencils?
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Study Notes
Scientific Drawings
- When drawing scientific diagrams, it is recommended to use a pencil.
- Scientific drawings should strive to be as simple as possible while still being true to life.
- To make scientific drawings more appealing, they can be sketched.
Methods for Showing Density
- Streaking is a method used to show density in scientific drawings.
- Stippling is another method used to show density in scientific drawings.
- Cross-hatching is also a method used to show density in scientific drawings.
Methods for Showing Underlying Structure
- Smooth unbroken lines are used to show an underlying structure in scientific drawings.
Labeling in Scientific Drawings
- Labels on a scientific drawing should be written in either all capital letters or all lowercase letters, but not a mixture of both.
- It is not acceptable to have arrowheads on label lines.
Choosing the Right Pencil
- A pencil of medium hardness (HB) is preferred for scientific drawings because:
- Soft pencils produce lines that are too dark and thick.
- Soft pencils need to be sharpened frequently to maintain the point.
- The point of a soft pencil wears down too quickly.
Annotated Diagram of a Leaf
- Annotated diagram of a leaf should include labels for key features such as:
- Leaf margin
- Midrib
- Petiole
- Vein
- Leaf blade (lamina)
- Pinnate venation
- Leaf stalk
- Axillary bud
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