Scientific Measurements

Measurements:
-quantitative observations 
-include 3 pieces of information 
1.magnitude 
2.unit 
3.uncertainty 
-measurements are not numbers 
-numbers are obtained by counting or by definition; measurements are obtained by comparing an object with a standard "unit" 
-numbers are exact; measurements are inexact 
-mathematics is based on numbers; science is based on measurement.

Units of Measurements:

A unit of measurement is a definite magnitude of a physical quantity, defined and adopted by convention and/or by law, that is used as a standard for measurement of the same physical quantity. Any other value of the physical quantity can be expressed as a simple multiple of the unit of measurement.

Calibrations:

 is a comparison between measurements - one of known magnitude or correctness made or set with one device and another measurement made in as similar a way as possible with a second device.

Accuracy:

refers to how closely the measured value of a quantity corresponds to its “true” value.

Sensitivity:

- Place value that is no longer represented in the calibration

- Place value that is already approximated/estimated

- Place value after the accuracy 

Precision:

expresses the degree of reproducibility, or agreement between repeated measurements.

Identifying Place Values:

- Each measuring device is accurate only up to a certain value.

- This place value is the smallest place value represented or that can read from measuring device

- The estimated place value is the next place value after the place value to which the instrument is accurate. 

Maegan Zablan

Romina Espuerta

Pamela Lopez

Tina Silvestre

Jam Villanueva