1. Aim #10: How do scientists make detailed observations?
Date: September 27, 2016
Aim #10: How do scientists make detailed observations?
HW:
1) Worksheet- making measurements due Thursday
2) Quiz Corrections due tomorrow
3) Quiz #2 Wednesday
Do Now: Complete the following conversions:
1) 8.24 km =_______________ dm
2) 5.44 m =_______________ cm
3) g =_______________ kg
4) L =_______________ mL

2. 1. How can we make more detailed observations?
Use instruments to measure things… Quantitative observations

3. 2. SI= International System of Units (The Metric System)
Measure
Definition
Unit(s)
Symbol(s)
Instrument(s)
Distance
Length, width, height
Meter m
Mass
The amount of stuff
Gram g
Liquid Volume
The amount of space it takes
Liter L
Temperature
How hot or cold something is
Degrees Celsius C
Time
How long it takes
Seconds S
Ruler
Balance
Graduated
Cylinder
Thermometer
Stopwatch

4. Metric Ruler

5. 3. How can we read metric measurement?B C cm
What is the distance between A and B?
1.5 15
Point A= _____ cm or _____ mm
Point B= _____ cm or _____ mm
Point C= _____ cm or _____ mm 72
7.2
72mm-15mm = 57 mm
10.3
103

6. 4. How do we measure volume of a liquid?
How many mL of liquid are in this graduated cylinder?
11 ml
Always measure volume from the bottom of the meniscus!

7. 5. How do we measure temperature?
Celsius Thermometer
Important temperatures to know:
0˚C- Water freezes
20 ˚C- Room Temperature
37 ˚C- Normal Body Temperature
100 ˚C- Water Boils

8. 6. How do we measure with a triple beam balance?
Place all markers to zero.(The pointer should be lined up with zero.)
Place object on the plate and move markers until the pointer lines up with zero again.
Read markings on slider scale (add values together).

9. Practice Packet pages 19-21