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12 Cards in this Set
- Front
- Back
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WORK
Historically when and where did farmers use a sickle made of bone with flint teeth to cut their crops? |
In Jordan about 6000BC
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WORK
In what year did fishermen near the Black Sea in the region of Yugoslavia area use fishhooks to catch their food? |
4500BC
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Name six basic tools
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Inclined plane, wedge, screw, lever, wheel and axle, and pulley.
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FRICTION
Hunters used stone spearheads attached to wooden shafts at what time and where? |
6000 B.C. France
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WEDGES
What are some common wedges that are used every day. |
Some common wedges are knives, scissors, and doorstops.
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TOOLS
What is mechanical advantage? |
The amount of work we save by using a tool.
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TOOLS
What is the formula for Mechanical Advantage? |
MA = Output force/
Input force |
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INCLINED PLANE
The inclined plane ______________ force so that we can do work that we otherwise could not do. |
magnifies
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ARCHIMEDES *************
How did Archimedes determine how much gold had been stolen? What is the term for this? |
displacement
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TOOLS **********************
Define technology. There are three parts to this definition. |
Technology is the art and science of making things useful in our everyday lives. It includes the use of tools, machines, and materials to help us live and work efficiently.
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TOOLS
When did farmers use ox-drawn plows to till soil on their Roman Empire farms? |
250 AD
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INCLINED PLANE
Around what time were ladders used in Jericho to make climbing to a house’s roof easier? |
6000BC
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