Simple Machines

Flashcard
•
Science
•
12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a lever?
Back
A simple machine that consists of a rigid bar that pivots around a fixed point called the fulcrum.
2.
FLASHCARD QUESTION
Front
What are the three classes of levers?
Back
1. First Class: Fulcrum in the middle (e.g., seesaw). 2. Second Class: Load in the middle (e.g., wheelbarrow). 3. Third Class: Effort in the middle (e.g., tweezers).
3.
FLASHCARD QUESTION
Front
What is a fulcrum?
Back
The pivot point around which a lever rotates.
4.
FLASHCARD QUESTION
Front
What is the difference between a fixed pulley and a moveable pulley?
Back
A fixed pulley does not move with the load, while a moveable pulley moves with the load.
5.
FLASHCARD QUESTION
Front
What is an example of a first-class lever?
Back
A seesaw or a pair of scissors.
6.
FLASHCARD QUESTION
Front
What is an example of a second-class lever?
Back
A wheelbarrow or a nutcracker.
7.
FLASHCARD QUESTION
Front
What is an example of a third-class lever?
Back
Tweezers or a fishing rod.
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