Key words:
What does a screw do?
What are some real life examples?
- thread, rotation, inclined plane
- A screw is a circular object that is wrapped in grooves called threads. Often times the typical screw will have a flat head where effort/force is applied.
What does a screw do?
- A screw is often used to hold two objects together and restrict movement through the use of its threads. It can also be used to lift a load. For more information check out the videos below.
What are some real life examples?
- Wood screws, screw jack, door lock, vice, jar, etc.
- Click on the link for pictures of more screws: http://www.mikids.com/SMachinesScrews.htm
Retrieved October 22, 2013
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Retrieved October 23, 2013
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Retrieved October 25, 2013
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Activity:
Watch the videos above. Pause or rewind any of the videos if they move to quickly. Pay attention to the key words (listed above). Answer the following questions in your KidBlog.
Watch the videos above. Pause or rewind any of the videos if they move to quickly. Pay attention to the key words (listed above). Answer the following questions in your KidBlog.
- According to the first video why might a screw be more useful than a nail?
- According to the second video how is a screw similar to an inclines plane?
- According to the third video how is the strength of a screw determined?
- Comment on at least 2 of your peers' blog posts this week.
- Find a screw and bring it to school tomorrow! Note: be sure to pack it safely!