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WorksheetsStress and Strain checkpoint
Total questions: 12
Worksheet time: 6mins
(a) describes the force felt per unit area of a loaded sample
The force pulling on a sample of material is called the (a)
A sample is placed under load. If it is replaced with a sample of the same material but half the cross sectional area, the stress will be....
doubled
halved
the same
zero
If the load on a sample is doubled, the stress will...
increase by 1
be halved
stay the same
be doubled
The distance by which a sample gets longer when pulled by a load is called (a)
Strain is the name given to the ratio of extension to (a) length
Valid units of stress include:
Newtons per meter
newtons per square meter
Pascals
Gigapascals
It has no unit
Valid units of strain include:
Newtons per square meter
bread
Meters
Pascals
It has no unit
For a given material under a fixed load, strain will vary depending on the length of the sample
True
False
Sometimes
Strain could be expressed as a decimal or percentage
True
False
Strains smaller than 0 are impossible
True
False
Stress and strain can both be determined for extension and compression
True
False
Compression is a myth
