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Engineering: explore STEM content (page 14 of 27) · openstem

All fields Software Mathematics Physics Chemistry Biology Engineering Astronomy Environmental Other Engineering Engineering groups

Explore STEM Content

Search the community's STEM library — free to study, yours to make your own.

Engineering

Circuits, mechanics, materials and design on openstem — flashcards, notes, quizzes, sketches and flowcharts shared by the community. Study free, or clone anything into your library.

Content Groups1

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Flashcards9 cards

Why is a diving board a cantilever?1 / 9

It is bolted down at one end (the fixed end at the pool deck) and sticks out over the water completely unsupported (the free end) — exactly the cantilever shape.

Engineering

Engineering · L2 · Cantilevers in the Real World

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Engineering · L2 · Cantilevers in the Real World

Flowchart15 objects

Engineering

Engineering · L2 · How an Electromagnet Works

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Engineering · L2 · How an Electromagnet Works

Flashcards8 cards

Why does a heavy metal boat float, even though a lump of metal would sink?1 / 8

The boat's wide, bowl shape pushes a lot of water out of the way. That water pushes back up under the boat, hard enough to hold it up.

Engineering

Engineering · L1 · Boats & Floating Cargo

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Engineering · L1 · Boats & Floating Cargo

Flashcards9 cards

Why might a fatigue fracture surface look different from a fracture surface caused by a single static overload?1 / 9

A fatigue surface often shows smooth, curved "beach marks" (striations) left behind by the slow crack-propagation stage, next to a rougher, more jagged patch where the final, sudden fracture happened. A static overload fracture, by contrast, tends to look uniformly rough or torn across the whole surface, since it all failed at once with no slow-growth stage.

Engineering

Engineering · L3 · Fatigue & Cyclic Loading

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Engineering · L3 · Fatigue & Cyclic Loading

Flashcards10 cards

What four parts do you need to build a simple circuit?1 / 10

A battery, wire, a bulb, and (if you want to switch it off) a switch — all joined together with no gaps.

Engineering

Engineering · L1 · Building Simple Circuits

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Engineering · L1 · Building Simple Circuits

Flowchart5 objects

Engineering

Engineering · L1 · Ramps & Wedges Quiz · flowchart

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Engineering · L1 · Ramps & Wedges Quiz · flowchart

Flashcards10 cards

What is a sensor?1 / 10

A sensor is a device that detects something in the environment — like light, heat, sound, or motion — and turns it into information a machine can use.

Engineering

Engineering · L2 · Sensors & Feedback

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Engineering · L2 · Sensors & Feedback

Note~207 words · 1 min

What a trade-off is Getting more of one good thing means getting less of another. Engineers run into this constantly; almost every design choice has one. Think about a backpack. A bigger one holds more, which is great. It's also heavier to

Engineering

Engineering · L1 · Trade-Offs: More of One, Less of Another

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Engineering · L1 · Trade-Offs: More of One, Less of Another

Flashcards9 cards

What shape is an arch?1 / 9

An arch is a curved structure that spans an opening, like a doorway or a gap between two supports. Instead of a flat top, its top follows a smooth curve.

Engineering

Engineering · L2 · Arches & Domes

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Engineering · L2 · Arches & Domes

Quiz4 questions

Why do big projects like a bridge need a team of engineers?

ABecause one engineer is not allowed to work aloneBBecause there are many different parts to figure out at onceCBecause teams are always faster than machinesDBecause bridges are the only thing engineers build

Engineering

Engineering · L1 · Teamwork in Engineering Quiz

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Engineering · L1 · Teamwork in Engineering Quiz

Quiz6 questions

What happens when a magnet is brought near a steel paperclip?

AThe magnet attracts (pulls) the paperclip toward itBThe magnet pushes the paperclip awayCNothing happens at allDThe paperclip melts

Engineering

Engineering · L1 · Magnets Quiz

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Engineering · L1 · Magnets Quiz

Flowchart5 objects

Engineering

Engineering · L2 · Learning From Failures · flowchart

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Engineering · L2 · Learning From Failures · flowchart

Quiz3 questions

A seesaw is an example of which simple machine?

ARampBWheelCLeverDPulley

Engineering

Engineering · L1 · Simple Machines Quiz

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Engineering · L1 · Simple Machines Quiz

Note~190 words · 1 min

Three properties, often confused Strong is not flexible Hard is not strong The bike helmet: two materials, two jobs The question an engineer actually asks Not "what's the best material?" but "what must this part survive, and which propertie

Engineering

Engineering · L2 · Material Properties: Strength, Flexibility, Hardness

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Engineering · L2 · Material Properties: Strength, Flexibility, Hardness

Quiz6 questions

What is fatigue failure, in engineering terms?

AFailure caused by a single overload exceeding the material's ultimate strengthBFailure caused by repeated cyclic loading at a stress level below the material's static yield strengthCFailure caused only by exposure to high temperaturesDFailure that only ever affects brittle, non-metal materials

Engineering

Engineering · L3 · Fatigue & Cyclic Loading

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Engineering · L3 · Fatigue & Cyclic Loading

Flowchart9 objects

Engineering

Engineering · L3 · AC Circuits Basics · flowchart

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Engineering · L3 · AC Circuits Basics · flowchart

Quiz6 questions

In a Class 1 lever, what sits between the effort and the load?

AThe fulcrumBNothing — they touch directlyCA second loadDA second fulcrum

Engineering

Engineering · L2 · Levers: Three Classes Quiz

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Engineering · L2 · Levers: Three Classes Quiz

Quiz6 questions

Forward kinematics for a serial manipulator:

AAlways has a unique solution given the joint variablesBCommonly has multiple solutions, like 'elbow up' vs 'elbow down'CCannot be computed for more than 3 jointsDRequires solving the equations of motion

Engineering

Engineering · L5 · Robot Kinematics & Dynamics — 6 Q

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Engineering · L5 · Robot Kinematics & Dynamics — 6 Q

Quiz6 questions

Why does the air inside a hot air balloon make it rise?

AThe burner pushes the balloon up like a fanBHeated air becomes lighter than the cooler air around it and floats upCThe balloon is filled with heliumDThe basket gets lighter as people climb in

Engineering

Engineering · L1 · Hot Air Rises Quiz

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Engineering · L1 · Hot Air Rises Quiz

Quiz6 questions

Does air take up space?

AYes — it is real stuff made of tiny gas particlesBNo — air is nothing at allCOnly when it is very coldDOnly inside balloons

Engineering

Engineering · L1 · Air Takes Up Space Quiz

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Engineering · L1 · Air Takes Up Space Quiz

Quiz2 questions

What is the first step of the engineering design process?

ABuildBTestCAskDImagine

Engineering

Engineering · L1 · Design Process Quiz

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Engineering · L1 · Design Process Quiz

Note~382 words · 2 min

One project, start to finish The design process makes most sense watched in action on something small. This follows a desk phone stand through every stage, including the part textbooks skip: what happens when the first prototype doesn't wor

Engineering

Engineering · L3 · Case Study: Designing a Phone Stand

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Engineering · L3 · Case Study: Designing a Phone Stand

Flashcards8 cards

Why do engineers draw a plan before they build something?1 / 8

A drawing lets everyone agree on the exact size and shape before any materials are cut. Mistakes on paper are cheap; mistakes after building are expensive.

Engineering