Unit 2 Level 1.5 Math and Measurements

How close a given set of measurements (observations or readings) are to their true or correct value. In an analogy with a bulls eye, this would be hitting the bulls eye.

• Precision

• Accuracy

• Repeatability

• Calibration

Each of the digits of a number that are used to express it to the required degree of accuracy, starting from the first nonzero digit.

• scientific notation

• precision

• significant figure

• conversion factor

How close measurements of the same item are to each other or repeated. In an analogy with a bulls eye, this would be throwing all of your throws in the same area but not on the bulls eye.

• Precision

• Accuracy

• Validity

• Calibration

A _________________ is the number or formula you need to convert a measurement in one set of units to the same measurement in another set of units.

• scientific notation

• significant figure

• standard notation

• conversion factor

A way of writing extremely large or small numbers. Where a number is written in two parts: • First: the digits, with the decimal point placed after the first digit, • Followed by: ×10 to a power that will put the decimal point back where it should be.

• standard notation

• scientific notation

• conversion factors

• qualitative observations

Solving math problems by using conversion factors. You start with the number and unit you are given over 1, then follow with a x sign and a division line. On the bottom of the division line you put the unit you were originally given, on the top you put the unit you are solving for. Then follow the conversion factor and place the numbers next to the correct unit.

• dimensional analysis

• qualitative observations

• quantitative observations

• inferences

A research method that involves measuring and counting observations. It hinges upon gathering numerical data, such as measurements or counts, that can be expressed in terms of a quantity. Example: the apple has a mass of 30 grams.

• Qualitative observations

• Quantitative observations

A research method where the characteristics or qualities of a phenomenon are described from the observation based on the subjective interpretation of what they see, hear, smell, taste, or feel. Example: the apple is red.

• Qualitative observations

• Quantitative observations

Which tools are used for quantitative observations? (Hint: There are 4)

Tags

NGSS.MS-PS3-1

Which answers are QUANTITATIVE? Select all of the right answers.

• There is one white goose.

• The boy is really upset.

• The goose looks scary,

• The boy has 2 white sneakers.