You wouldn’t use kilometers to measure the width of a penny!

Unit: Unit: _______ Definition :_____________________________ _______________________________________ Tools: Tools: ___________________ Time is always the _________________ because it _______________________ and the scientist decides the interval.

Unit: Unit: seconds (this is the standard unit however there are others). Definition: Definition: how long it takes for something to happen. Tools: Tools: stopwatch or clock Time is always the independent variable because it does not depend on anything and the scientist decides the interval.

Unit: Unit: ______________________ Definition: Definition:_______________ _______________________ Tools: Tools: ____________________

Unit: Unit: meter, centimeter, kilometer Definition: Definition: how far something is from one point to another. Tools: Tools: ruler, measuring tape

Time Sometimes these units aren’t enough!!! So…we add _____________to our units. Distance ___________ _ __________

Time Sometimes these units aren’t enough!!! Sooooo…we add prefixes to our units. Distance hour, minute inch, mile seconds meters

______ Hecto 100 Deka- _____ Basic Unit (g, m, L) ______ 0.1 ______ Milli K____ H____ D__ B_ D_______ C________ M____ Identify the Basic Unit for each letter below: g=_________ m=________ L=_________

Kilo Hecto- 100 Deka- 10 Basic Unit (g, m, L) Deci- 0.1 Centi Milli K H D B D C M King Henry Died By Drinking Chocolate Milk Identify the Basic Unit for each letter below: g=__Grams_ m=_meters_ L=_Liters_

Let’s Practice! The length of ten city blocks___________ Across the science classroom________ The length of your foot_________ The thickness of a dime_________ Determine the best measurement for:

Practicing Conversions 36 cm = ____ m 28 mL = ____ L 5.25 m = ____ mm 480 mg = ____ g

____ _____ ______ It is often easier to transform data into a ____________ to get a _____________________. Definition:___________________ ___________________________ ___________________________

Pie Bar Line It is often easier to transform data into a GRAPH to get a visual picture. Definition:. Definition: A model that helps us to picture the relationship between two variables.

Consistent Data What does it mean to be consistent? Which Group has the most consistent data?

Precision vs. Accuracy _________________ refers to how close a measurement is to the true value. ________________ describes how close together repeated measurements are. Goes along with “most consistent”

Accuracy vs. Precision Accuracy refers to how close a measurement is to the true value. Precision describes how close together repeated measurements are. –Goes along with “most consistent”