1. Measurement

2. Measuring Distance Distance is the length from one point to another
The tool we use in class to measure distance is the ruler or meter stick.
Meter: basic unit of distance in the metric system
Centimeter:
100 centimeters make a meter.
A cm is 1/100 of a meter
Kilometer:
1,000 meters.
Millimeter:
1000 millimeters make a meter.
10 millimeters make a cm.
One mm is 1/1000 of a meter.

3. How to measure objects to the nearest tenth of a cm , 0.1 cm
Always start at zero.
Then read the biggest number covered by the object. Those are the centimeters. Write that to the left of the decimal.
Then count the lines. Those are the tenths of a cm.
Write them to the right of the decimal.
Remember units! funbrain

5. Five things you need on every graph before you plot the points
1. Title
2. Axis
3. Intervals
4. Label for axis with units
5. Scale for x and y axis
Think TAILS!

6. How to plot points on a graph
Find points on the correct
axis X and y, (depending on
data and label on axes)
For example 300 mm of
pressure and 75 degrees
centigrade is marked

7. How to plot points on a graph
2. Draw or run fingers along
the
horizontal and vertical lines
from the points on the axes

8. How to plot points on a graph
3. Where lines meet,
plot the point.

9. Rules for drawing a best fit line
Use a ruler to make a straight line
The line must go as close as possible to all the points
The line must extend all
the way across the graph

10. How to find information using the best fit line on the graph
Find value given in the problem on the correct axis. Run your finger straight along that line until you get to the
graphing line. Then read
across or down to the
value on the other axis.
There is your answer.

11. Do Now:
Which has more mass, a kilogram of bricks or a kilogram of feathers? Explain on p. 16

12. Measuring Mass Mass is the amount of matter in a substance
Mass is not the same as weight. Weight is the pull of gravity on mass.
Mass does not change depending on where you are but weight changes depending on where you are – for example the moon.
The tool we use to measure mass is the triple beam balance.
The basic unit of measure of mass is the KILOGRAM (kg).
Grams are abbreviated g.
Kilograms = Kg Kg = 1,000 g
milligrams = mg mg = 1 g
Draw a picture of the difference between mass and weight.
Video of How to Use a Triple Beam Balance

13. Rules for using the Triple Beam Balance
1. Always use two hands to carry the balance.
2. Never put too much weight on - not more than a textbook.
3. Always start at zero.
4. Start with the heaviest rider.
5. Always fit the riders in the notches.
6. Line up the decimals when you add the masses on each rider.

14. The mass here is =62.5G

15. Do Now continued
2. What is the mass of the beaker and sand in the second picture?
3. If the mass of the beaker is 14.5g, what is the mass of the sand?
Hint: what did we do yesterday with the gum and wrapper?

16. Do Now: Explain this cartoon on p 37 bottom

17. Volume: The amount of space an object takes up
The basic unit of volume is the liter.
Volume in class is measured in milliliters
Liters are abbreviated l
milliliters are abbreviated ml.
Guess how many milliliters in a liter?
1000ml = 1 l

18. The tool we use to accurately measure volume is called a graduated cylinder.

19. How to read a graduated cylinder
1. Get down so the line is at eye level
2. look at the bottom of the meniscus
3. watch the scale!

20. Do Now:
With your elbow buddy, measure exactly 50.0ml of water into your graduated cylinder.
Use the dropper when you get close.

21. 1.Fill the graduated cylinder to 50.0 ml.
Use a graduated cylinder to measure the volume of an irregular shaped solid:
1.Fill the graduated cylinder to 50.0 ml.
2. Slide the object in on an angle.
3. Subtract 50.0 mL from the new water level.
1.0 milliliter = 1.0 cubic centimeter (cm3)
What is the volume of the object?
Displacement is the term we use
when an object takes the place of the
water.

22. Candy Size Data Table Candy Biggest Length (cm) Mass (g) Volume (cm3)
The biggest candy is the _______________. My evidence is ______________________________________________________________________________________________________________________________________________________________________________________________________

23. Temperature Feel the temperature of water in the beaker. Is it warm?
Is it cool?
If it were that warm inside a refrigerator,
or on a ski slope, would it be hot or cold?
If it were that warm inside an oven would
it be hot or cold?

24. Do Now:
Place thermometer between you and your elbow buddy on the desk. Read the temperature on the Celsius scale. Record on p 31.
Now gently hold the thermometer with the bulb in your hand. Don’t squeeze. Read and record the temperature.
Was it different? Explain why on p 31.

25. Measuring Temperature
Temperature: The amount of heat in a substance
compared to a common scale.
Temperature is measured in degrees Celsius
in the metric system.
The tool we use to measure temperature is
called a thermometer.
The unit is degrees Celsius, abbreviated °C.
The Celsius scale is based on water:
Water freezes at 0 °C. Water boils at 100 °C