1. Reading and Recording Measurements

2. Reading and Recording Measurements
How much water is in the beaker below?
42 mL ?
43 mL ?
46 mL ?
47 mL ?
50 mL
30 mL
10 mL

3. Reading and Recording Measurements
You know for a fact that there are between 40 mL and 50 mL of water in the beaker.
50 mL
30 mL
10 mL

4. Reading and Recording Measurements
When measuring, you will read all of the known digits from the largest to the smallest increments and then you will read one estimated digit that corresponds to an imaginary set of 10 increments between the smallest actual increments.
50 mL
30 mL
10 mL

5. Reading and Recording Measurements
So how much water is in the beaker below?
There appears to be 43 mL of water in the beaker.
The 4 is known and the 3 is estimated.
50 mL
30 mL
10 mL

6. Reading and Recording Measurements
Ex.(1) What is the length of each of the metal strips below?
Strip A is _____ cm
Strip B is _____ cm
0 cm 1 2 3 4 5 6
Strip A
3.45
Strip B
5.70

7. Reading and Recording Measurements
Ex.(2) What is the volume of the water in the graduated cylinder below?
5 ml
10 ml
15 ml
20 ml
The volume of the
water is ______ mL
7.5

8. Reading and Recording Measurements
Ex.(3) What is the mass of the object on the balance below?
The mass of the object is ________ g
0 g
1 0 g
2 0 g
3 0 g
4 0 g
5 0 g
39.2

9. Reading and Recording Measurements
Ex.(4) What is the density of the object in example #3 if it were placed in the water in the graduated cylinder of example #2?
The volume of the water and
the object is ______ mL
5 ml
10 ml
15 ml
20 ml
5 ml
10 ml
15 ml
20 ml
13.0
The volume of the object alone is ______ mL
5.5
The density of the object is _________________ g/mL
(calculator answer)
The density of the object is ______ g/mL (to nearest tenth)
7.1