1. Measurement in science
7th grade science
2011

2. After the quiz… Fold the colored paper in half hamburger style
Glue it in the next page of your science notebook
Title it “MEASUREMENT IN SCIENCE”
Copy the following table on the inside cover (not too big)
Number to 10
After this,
begin page 10
& 11 in the
packet
Object
Measurement 1 2 3 4 5 6 7

3. When Measuring… Always use a unit Be precise
cm, mL, g, mm,
Be precise
No rounding, no estimating (unless specified)
NEVER use fractions, ONLY use decimals
16 1/2 – NO!!!
16.5- YES!!!

4. Customary vs. Metric
Why should you use metric over customary in science?
Based on a 10 point scale
Easier to use

5. Customary vs. Metric

7. MEASUREING MASS Tool: electronic scale and balance
Use: to measure the amount of matter in an object
Common Unit: gram (g), kilogram (kg)
1 kilogram= 1000 grams
**make sure scale is always set to gram (g)**

8. X

9. MEASURING TIME Tool: stopwatch Use: to measure time elapsed
Common unit: seconds (sec), minutes (min), hours
**Read directions- do you stop watch during a lab or does it keep running through experiment**

10. MEASURING LENGTH Tool: Meter stick, ruler Use: to measure distance
Common unit: meter (m), centimeter (cm), millimeter (mm)
10 mm = 1cm
100 cm = 1 m
**No fractions/inches/
feet… all metric
measurement**

11. Measuring Length How many millimeters are in 1 centimeter?
1 centimeter = 10 millimeters
How many millimeters are in 1 centimeter?
What is the length of the line in centimeters? _______cm
What is the length of the line in millimeters? _______mm
What is the length of the line to the nearest centimeter? ________cm
HINT: Round to the nearest centimeter – no decimals.
Ruler:

12. MEASURING TEMPERATURE
Tool: thermometer
Use: to measure how fast or slow particles are moving in an object
Common units: Celsius (C0), Fahrenheit (F0)
**watch your scale**

13. What is the difference between
temperature and heat?
Temperature is a measure of the average kinetic energy of atoms.
Thermometersare used to measure temperature
In other words: the faster the atoms move = the higher the temperature, & the slower the atoms move =
the lower the temperature.
Less Heat
More Heat

15. MEASURING VOLUME Tool: Graduated cylinder or ruler (L x W x H)
Use: to find how much space an object takes up
Common unit: Liter (L), milliliter (mL)
1000 mL = 1 L
**watch your scale & read
at the bottom of the
meniscus (curve)**

17. LAB SAFETY/TOOLS/MEASUREMENT TEST NEXT FRIDAY