Measurements Flashcards
(32 cards)
Which of the following is equivalent to half a meter?
a) 500 cm
b) 50 cm
c) 100 mm
d) 10 mm
B. 50 cm
A book has a mass of 500 g, how many kilograms does it weigh?
a) 5 kg
b) 1 kg
c) 0.5 kg
d) 0.25 kg
C. 0.5 kg
Which of the following has the smallest value?
a) 29 cm
b) 0.0025 km
c) 4.5 x 10^-3 m
d) 10,000 mm
C. 4.5 x 10^-3 m
The average thickness of the leg of an ant is 0.035 cm. How many millimeters is this?
a) 35 mm
b) 3.5 mm
c) 0.0035 mm
d) 0.35 mm
D. 0.35 mm
Which of the following relationships of quantities is TRUE?
a) 200g = 0.2 kg
b) 5000g > 5kg
c) 1kg < 900g
d) 0.5 kg = 5000g
A. 200 g = 0.2 kg
Which of the following is the BEST example of a number expressed in scientific notation?
B. 8.43 x 10^3
What is 7.236 x 10^-3 written in standard form?
C. 0.007236
The speed of light in a vacuum is about 299,800,000 m/s. Which of the following values in scientific notation is its equivalent?
C. 2.998 x 10^8 m/s
Which of the following is equal to 0.0051 x 10^3?
C. 5.1 x 10^-5
MOR radio station in Cagayan de Oro city operates at a frequency of 91.9 Mega Hertz. What is 91.9 x 10^6 Hz written in standard form?
B. 91,900,000 Hz
can be expressed in terms of a number of fundamental quantities.
Physical Quantities
called exponential notation is a convenient way of writing
values using the power of ten notation wherein we can determine the number of significant
digits as well as the place value of the digit.
Scientific Notation
(derived from French
Syteme International)
SI (International System Unit of Measurement)(Metric Units)
The International System Unit of Measurements (SI) was established in the year __________ at __________.
1960, a conference held in France
Magnitude only
Scalar
Magnitude w/ Direction
Vector
refers to the closeness of the measurement to the true value or accepted
value.
Accuracy
refers to the closeness among several measurements
that have been obtained in the same way.
Precision
What is the sum of 281.45 g ,361.1 g, and 5.301 g ? Apply rules in significant figures.
A. 648.9 g
You are using an electronic stop watch in one of your experiments in Physics. The digital reading displays along with accuracy to how may second?
A. 0.01 s
The diameter of a certain virus is 0.00000002m as viewed under a microscope. How
would this be expressed in scientific notation?
C. 2.0 x 10^-7 m
Rio de Grande river has a total length of 505 km. What is this length in m?
C. 5.05 x 10^5 m
7 Base Units
Meter, Kilogram, Second, Ampere, Kelvin, Mole, Candela
Base unit for Length
Meter (m)
