GHS - STEM

What are the three main types of bridges?

• truss bridges

• beam bridges, arch bridges, and suspension bridges

• cable-stayed bridges

• cantilever bridges

Which forces act on a bridge?

• gravity, wind, and friction

• heat, electricity, and magnetism

• compression, tension, shear, and bending

• expansion, contraction, and torsion

What is the difference between compression and tension forces?

• Compression forces push or squeeze objects together, while tension forces pull or stretch objects apart.

• Compression forces pull or stretch objects apart, while tension forces have no effect on objects.

• Compression forces pull or stretch objects apart, while tension forces push or squeeze objects together.

• Compression forces have no effect on objects, while tension forces push or squeeze objects together.

How does a beam bridge distribute weight?

• Through the cables

• Through the pillars

• Through the suspension system

• Through the beams

What are the two main types of marble run tracks?

• long tracks and short tracks

• straight tracks and curved tracks

• uphill tracks and downhill tracks

• wide tracks and narrow tracks

What factors should be considered when designing a marble run track?

• slope, angle, materials, marble size, obstacles, design

• time, cost, durability, flexibility, safety, aesthetics

• shape, texture, temperature, sound, taste, smell

• color, length, width, height, weight, speed

How does the height of a marble run track affect the speed of the marble?

• The height of the marble run track has no effect on the speed of the marble.

• The speed of the marble increases as the height of the track decreases.

• The speed of the marble decreases as the height of the track increases.

• The height of the marble run track affects the speed of the marble.

What is the purpose of adding loops and twists in a marble run track?

• To add excitement and challenge

• To decrease the fun and excitement

• To make it easier and less challenging

• To make it more boring and predictable

What are the advantages of using a beam bridge?

• Low cost and easy construction

• High durability and flexibility

• Strong resistance to wind and earthquakes

• Ability to span long distances

What is the purpose of a suspension bridge?

• To support heavy loads

• To provide a smooth ride

• To withstand earthquakes

• To allow boats to pass underneath