SI Units
The SI unit of temperature
Kelvin
What variables are needed to calculate density?
Mass and volume
How many significant figures are in 0.0950?
3
How many millimeters are in a meter?
The degree of exactness of a measurement is called...
precision
What is the SI base unit of mass?
Kilogram
The equation for density and what each variable means
p=m/V,
where p= density
m=mass
and V=volume
How many significant digits are in 0.003012 g?
4
0.032 cm in micrometers
320 micrometers
A bowman is shooting arrows at a target and constantly hits the outer circle in the same spot. Is his aim accurate, precise, both, or neither?
Precise but not accurate.
What is the SI unit of force?
Newton
What is the unit for density?
kg/m^3 or g/cm^3
Write the answer of this problem using the correct amount of significant figures:
2.33 x 6.087 x 1.3
What determines the number of significant figures?
18
2 significant figures because of 1.3
How many centimeters are in 0.056 meters?
5.6 cm
A scale measures the weight of an object as consistently 2kg, which is two kilograms less than the actual object. Is the measurement precise, accurate, both, or neither?
Precise but not accurate.
What does SI stand for?
System International
An object is more likely to sink in water if...
it has a high density.
True or False:
Zeros between non-zero digits are not significant.
False; zeros between non-zero digits are significant.
How many seconds are in 4.3 hours?
15,480 seconds
If you throw darts constantly and they all end up on different places. Is your aim precise, accurate, both, or neither?
Your aim is neither precise or accurate.
the International Bureau of Weights and Measures in France
The density of a liquid is 1.63 grams per milliliter. What is the mass of the liquid if there are 0.25 milliliters?
0.4075 grams
How many significant figures are in 6.02 x 10^23?
How many minutes are in 49.7 hours?
2,982 minutes
If you threw 3 darts at a target and they all clustered at the center, is your aim precise, accurate, both, or neither?
Your aim is both precise and accurate.