Experimentation/ Reading Measurements
Accuracy and Precision
Volume and Density
Scientific Notation
Dimensional Analysis/ Metric Conversions
100
True or False: When you read measurements you need to go to one place beyond what the device measures.
True
100
Describes the closeness of a measurement to the true or accepted value.
Accuracy
100
What is the equation for density?
Density= Mass/ Volume
100
True or False:
Positive exponent= larger
Negative exponent = smaller
True
100
A ratio of equivalent measurements used to convert a quantity from on unit to another is know as...?
a. conversion factor
b. accuracy
c. dimensional analysis
a. conversion factor
200
What is always constant and stays the same in the experiment is known as the:
a. Independent Variable
b. Dependent Variable
c. Control
c. Control
200
Describe the accuracy and precision.
Low accuracy; high precision
200
What is the correct way to solve for volume is I have a mass of 4.5 grams and a density of 7.85 g/mL.
a. 7.85 g/mL / 4.5 grams
b. 4.5 grams / 7.85 g/mL
c. 4.5 grams x 7.85 g/mL
b. 4.5 grams / 7.85 g/mL
200
Which of the following is NOT in scientific notation?
a. 8.56 x 103
b. 8.56 x 10-3
c. 85.6 x 103
d. 8.56 x 101
C. 85.6 x 103
200
How many miles is equivalent to 68,640 feet?
(1 mile = 5280 feet)
13 miles
300
If a box weighs 45 kilograms, what is the mass of the box in grams. (K H D u d c m)
45,000
300
This picture represents:
High Accuracy, Low Precision
300
What is volume displacement?
To find the volume of a irregularly shaped object. Volume after- volume before.
300
The coefficient should be a number greater than ______ and less than ______?
One; Ten
300
There is a string that is 28 ft long. This is how many millimeters long the string is.
(1ft=12 in; 2.54cm=1in; 10mm=1cm)
8534.4mm
400
A study was done to find if different tire treads affect the braking distance of a car. What is the Independent variable?
Tire treads
400
What is the percent error of an experimental value of .156 cal/g and accepted value of .185 cal/g.
15.68%
400
Diamonds have a density of 3.5 grams/cm3. How big is a diamond that has a mass of 0.2 grams?
0.06 cubic centimeters
400
Convert 5.245 x 106 to standard form.
5,245,000
400
6240 hours is how many days?
260 days
500
Record the measurement in millimeters.
24.5 mm
500
Data: 1.11, 1.12, 1.14, 1.15, 1.24, 1.27, 1.33, 1.88, 1.67, 1.45, 1.22
Actual - 1.34
Percent Error? Accuracy?
Percent Error: 0.75% or 1.08 %
Accurate: Yes
500
An irregularly shaped stone was dropped in a graduated cylinder containing a volume of water equal to 7 mL. After the stone was dropped, the water rose to 18 mL. What is the volume of the stone?
11 mL
500
Write the number 0.0000452 in scientific notation.
4.52 x 10-5
500
How many millimeters are in 1 kilometer? Record your answer in scientific notation.
1.0 x 106