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Understanding Engine Models and Mechanics

Understanding Engine Models and Mechanics

Assessment

Interactive Video

Physics

6th - 8th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial introduces reciprocating engines, tracing their history back to the Roman Empire. It demonstrates a human-powered engine, explaining the mechanics of pistons and crankshafts. The tutorial highlights the importance of flywheels in smoothing motion and discusses alternative energy sources like compressed air. The video concludes with a mention of student projects involving similar engines.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What ancient civilization is credited with using water pressure to power a sawmill?

Greek

Roman

Chinese

Egyptian

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the human-powered model, what is crucial for keeping the crankshaft turning in the same direction?

The size of the piston

The rhythm of operation

The material of the piston

The length of the crankshaft

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main challenge when operating the human-powered model quickly?

Maintaining balance

Keeping the rhythm

Increasing pressure

Reducing noise

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What material is used to create a seal in the large piston?

Plastic

Rubber

Foam packing material

Metal

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens when the pressure is increased in the piston system?

The piston moves backward

The piston moves forward

The piston stops moving

The piston rotates

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of drilling holes near the top of the juice bottle used in the piston housing?

To allow air in and out

To reduce weight

To improve aesthetics

To increase pressure

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the role of the tube in the piston system?

To support the piston

To reduce noise

To transfer air pressure

To increase speed

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