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

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

Unit: _______

Definition:____________________________________________________________________Tools: ___________________ Time is always the _________________ because it _______________________ and the scientist decides the interval.

Unit: seconds (this is the standard unit however there are others).

Definition: how long it takes for something to happen.Tools: stopwatch or clock Time is always the independent variable because it does not depend on anything and the scientist decides the interval.

Unit: ______________________

Definition:______________________________________

Tools: ____________________

Unit: meter, centimeter, kilometer

Definition: how far something is from one point to another.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.

Distancehour,

minuteinch, mile secondsmeters

______

______ Hecto

100 Deka-

_____ Basic Unit

(g, m, L)______

0.1 ______

______ Milli-

0.001

K____ H____ D__ B_ D_______ C________

M____Identify the Basic Unit for each letter below:g=_________m=________L=_________

Kilo-

1000 Hecto-

100 Deka-

10 Basic Unit

(g, m, L)Deci-

0.1 Centi-

0.01 Milli-

0.001

King Henry Died By Drinking

Chocolate MilkIdentify 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 Conversions36 cm = ____ m

28 mL = ____ L

5.25 m = ____ mm

480 mg = ____ g

0102030405060708090

Green Blue Orange Puple

0102030405060708090

100

0 10 20 30 40 50 60 70 80 90 100

_______________

It is often easier to transform data into a ____________ to get a

_____________________.

Definition:__________________________________________________________

_______________

0102030405060708090

Green Blue Orange Puple

0102030405060708090

100

0 10 20 30 40 50 60 70 80 90 100

PieBarLine

It is often easier to transform data into a GRAPH to get a

visual picture.

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”