3D Creations Pre-Assessment Beginning of Year

What is the primary purpose of 3D modeling software?

• To create 2D drawings

• To create 3D digital representations of objects

• To edit video files

• To write computer code

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DOK Level 1: Recall

Which material is commonly used in CNC machining?

• PLA

• ABS

• Aluminum

• Resin

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DOK Level 1: Recall

Explain why textures and materials are important in 3D modeling.

• They determine the color of the model

• They add realism and detail to the model

• They make the model easier to print

• They reduce the file size of the model

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DOK Level 2: Skill/Concept

Describe the process of preparing a 3D model for printing.

• Create a 2D sketch, save it as a PDF, and print it

• Design the model, export it as an STL file, and slice it using slicing software

• Draw the model on paper, scan it, and send it to the printer

• Write a code script, compile it, and upload it to the printer

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DOK Level 2: Skill/Concept

What is the primary function of the Glowforge machine?

• 3D printing

• CNC machining

• Laser cutting and engraving

• Texturing and painting

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DOK Level 1: Recall

How does the choice of material affect the outcome of a 3D printed object?

• It only affects the color of the object

• It affects the strength, flexibility, and durability of the object

• It has no impact on the final object

• It only affects the printing speed

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DOK Level 2: Skill/Concept

Compare the advantages of using CNC machines over traditional manual machining.

• CNC machines are slower but more accurate

• CNC machines are faster, more accurate, and can run unattended

• CNC machines are less accurate but faster

• CNC machines are more expensive and less efficient

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DOK Level 3: Strategic Thinking

Evaluate the impact of different slicing software on the quality of 3D printed objects.

• All slicing software produce the same quality

• Different slicing software can affect layer height, print speed, and support structures, impacting the final quality

• Slicing software only affects the color of the print

• Slicing software has no impact on the final print quality

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DOK Level 3: Strategic Thinking

What is the role of infill in 3D printing?

• It determines the outer appearance of the model

• It provides internal support and affects the strength and weight of the model

• It only affects the printing speed

• It is used to add color to the model

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DOK Level 2: Skill/Concept

What is the primary purpose of using calipers in measurement?

• To measure temperature

• To measure electrical resistance

• To measure dimensions with high accuracy

• To measure weight