Significant Figures
Scientific Notation
Accuracy v. Precision
Experimental Section
Random
100
How many significant figures are in the number 3650?
3
100
Write the following number in standard notation: 6.0 x 10^3
6000
100
Define precise.
all of the data trials are close together
100
Define independent variable.
the component of the experiment the scientist changes
100
Define quantitative observation.
observation involving a measurement
200
How many significant figures are in the number 60104?
5
200
Write the following number in standard notation: 3.50 x 10^-5
0.0000350
200
Define accurate.
the average of the data points matches the true value
200
Define dependent variable.
the component of a lab the scientist measures
200
Define qualitative observation.
an observation involving the five senses
300
How many significant figures are in the number 0.00503?
3
300
Write the following number in scientific notation: 850
8.5 x 10^2
300
Is this data accurate? Is this data precise? True value: 7.8 Trial 1: 7.6 Trial 2: 7.9 Trial 3: 7.8 Trial 4: 7.9
The data is accurate and precise
300
Identify 3 controlled variables in the scenario below: A student investigated whether ants dig more tunnels in the light or in the dark. She thought that ants used the filtered light that penetrated the upper layers of earth and would dig more tunnels during the daytime. Ten ant colonies were set up in commercial ant farms with the same number and type of ants per ant farm. The same amount of food was given to each colony, and the colonies were in the same temperature. Five of the colonies were exposed to normal room light and five were covered with black construction paper so they did not receive light. Every other day for three weeks the length of the tunnels was measured in millimeter using a string and a ruler. Averages for the light and dark groups for each measured were then computed. The averages are listed in the following chart.
same number of ants per farm same about of food each day same temperature
300
what is the purpose of a Bunsen burner?
to heat materials
400
How many significant figures are in the number 0.003020?
4
400
Write the following number in scientific notation: 0.00689
6.89 x 10^-3
400
Is this data accurate? Is this data precise? True value: 9.3 Trial 1: 6.4 Trial 2: 6.9 Trial 3: 6.5 Trial 4: 6.8
This data is precise but not accurate
400
Identify the dependent variable in the scenario below: A student investigated whether ants dig more tunnels in the light or in the dark. She thought that ants used the filtered light that penetrated the upper layers of earth and would dig more tunnels during the daytime. Ten ant colonies were set up in commercial ant farms with the same number and type of ants per ant farm. The same amount of food was given to each colony, and the colonies were in the same temperature. Five of the colonies were exposed to normal room light and five were covered with black construction paper so they did not receive light. Every other day for three weeks the length of the tunnels was measured in millimeter using a string and a ruler. Averages for the light and dark groups for each measured were then computed. The averages are listed in the following chart.
length of the tunnels
400
What is the purpose of forceps?
to pick up hot materials
500
Which number is more accurate and why? 0.007 or 35
35, because it has more significant figures
500
Write the following number in scientific notation: 0.0000685
6.85 x 10^-5
500
Is the data accurate? Is the data precise? True value: 12 Trial 1:12 Trial 2: 15 Trial 3: 6 Trial 4: 15
This data is accurate but not precise
500
Identify the independent variable in the scenario below: A student investigated whether ants dig more tunnels in the light or in the dark. She thought that ants used the filtered light that penetrated the upper layers of earth and would dig more tunnels during the daytime. Ten ant colonies were set up in commercial ant farms with the same number and type of ants per ant farm. The same amount of food was given to each colony, and the colonies were in the same temperature. Five of the colonies were exposed to normal room light and five were covered with black construction paper so they did not receive light. Every other day for three weeks the length of the tunnels was measured in millimeter using a string and a ruler. Averages for the light and dark groups for each measured were then computed.
whether ants are exposed to light
500
What is the purpose of a beaker?
to mix materials or hold materials
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