Mystery Science - bridges

Why are pillar and arch bridges stronger than a simple board bridge?

• They are bigger.
• Board bridges are usually made by kids and the other ones are made by grownups.
• Board bridges can sag in the middle, but the other bridges have more support.
• They are not made of wood.

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

NGSS.MS-PS2-4

The suspension bridge was a good design for the Golden Gate Bridge in San Francisco because...

• ships had to pass underneath the bridge.
• it has lots of pillars underneath it to support it.
• the distance the bridge had to cross was not very long.
• the water under the bridge was very shallow.

Tags

NGSS.MS-ETS1-1

Push, pull or both?
Pressing a button

• Push
• Pull
• Both

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NGSS.K-PS2-1

Push, pull or both?
Towing a person on a raft

• Push
• Pull
• Both

Tags

NGSS.MS-PS2-1

Why is it hard to win a tug-0-war against an elephant?

• Elephants try really hard
• Elephants have more legs than we do
• Elephants have a lot of friction
• Elephants can push really hard

In the video clip, why was it hard to win Tug-of-War against teachers?

• The students were slippery.

• The teachers had more legs than the students.

• The teachers had more friction from pushing than the students.

These are all types of bridges except

• pillar

• curved

• arch

• board