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Physics Chapter 2 Quiz
Terms in this set (35)
True/False: Physical principles are usually expressed by mathematical formulas
What is an equation that orders the relationship between given physical quantities?
Who developed the metric system and when?
When was the SI units renamed ?
What did the SI units initially consist of?
meter and kilogram
What does the SI unit system consist of
7 base units
What are the two meaning of a dimension?
geometric and measurable physical quantity (length)
What are the 3 fundamental dimensions ?
Space, time and matter
What is a limitless 3D volume within which all matter exists and all physical phenomenon occur?
What is the SI unit for length?
What does 1 meter represent?
distance light travels in a vacuum in exactly 1/299792458
What is the SI unit for time?
What is a nonphysical continuum that orders the sequence of events?
What is matter?
something that occupies space and has mass
What is mass?
measure of its tendency to resist a charge in motion
What is the SI unit for mass?
True/False: The unit symbol and formula symbols are not the same
What is the SI unit for Thermodynamic temperature?
What is the SI unit for amount of substance?
What is the SI unit for electric current?
What is the SI unit for Luminous Intensity ?
What is a unit for force?
What is a unit for electric charge?
What is a unit for work and energy?
What would qualify something as a good measurement standard?
1. not affected by environment
2. Universally accepted
3. High level of precision
True/False: there will usually be some level of error when using an instrument
What are used to keep the instrument as accurate as possible?
Periodic calibration checks
True/False: positive error if greater than accepted and negative error if less than accepted
Formula for percent error
How do we make a qualitative assessment of accuracy?
compare the given value to the actual value
True/False: You can be very precise and still be inaccurate
When we use a mechanical metric instrument, we estimate to the ......
nearest tenth of the smallest decimal increment
True/False: Instruments started by using the body (cubit, span)
What is accuracy?
the qualitative evaluation of how close a measurement is to the actual or accepted value
What is precision ?
the qualitative evaluation of how exactly a measurement can be made
THIS SET IS OFTEN IN FOLDERS WITH...
BJU Physics Chapter 2 - Measurement
Physics Exam Chapter 3
Physics Chapter 3 Test:
BJU Physics Chapter 2
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