Scientific Notation
1,234,000 in scientific notation
What is 1.234 x 10^6?
The number of cm in a m
What is 100 cm?
refers to how close a series of measurements are to one another
What is precision?
12.655 has how many significant figures
What is 5?
The SI base unit of temperature
What is Kelvin?
(4 x 10^5) + (5 x 10^4)
4.5 x 10^5
1 km = ____ m
1000 m
A derived unit in a system of measurement that is based on an object or event in the physical world
What is a base unit?
120 has how many significant figures?
What is 2?
the formula for density
What is density = mass / volume?
(6.77 x 10^28) - (3.43 x 10^30)
-336.23.77 x 10^28
OR
-3.3623 x 10^30
7000 meters
(1000 m = 1 km)
A ratio of equivalent values used to express the same quantity in different units
What is a conversion factor?
340.00 has how many significant figures?
What is 5?
The ratio of an error to an accepted value
What is percent error?
(3 x 10^6) x (2 x 10^4)
(6 x 10^10)
The number of hours in a week
168 hours
include all known digits plus one estimated digit
What is a significant figure?
0.0000067 with 1 significant figure
7 x 10^-6
The type of graph that shows changes in quantities over time
What is a line graph?
(24 x 10^3) / (6 x 10^1)
(4 x 10^2)
27.78 m/s
A method of problem-solving that focuses on the units used to describe matter, often using conversion factors
What is dimensional analysis?
312,000 with 2 significant figures
What is 310,000?
Sample A has a density of 2.61
Sample B has a density of 3.96
Sample C has a density of 5.06
The density of the unknown is 2.701. Which sample has the smallest percent error? What is the value for that percent error?
Sample A, percent error of 3.37%