Hard Questions
TRUE OR FALSE
In an answer that has four significant figures, two are estimated and two are known.
What is False. Significant Figures include all known digits plus one estimated digit.
The SI base unit of time is the
What is a Second
The SI base unit for mass is the
What is Kilogram
The SI base unit for length is the
What is the Meter
You live 6 Kilometers from school. How many meters do you live from school?
What is 6000 Meters. There are 1000 meters in every Kilometer.
What is the ratio that compares the mass of an object to its volume referred to as?
What is Density
A means of expressing numbers as a multiple of two factors: a number between 1 and 10; and ten raised to a power, or exponent
What is Scientific Notation
How many Seconds are there in a Millisecond?
What is 0.001 Second to every 1 Millisecond.
This refers to how close a series of measurements are to one another
What is Precision
A unit of measurement that is defined by combining base units is a(n)
What is a Derived Unit
How many Nanograms are in 34 grams?
What is 34,000,000,000 in 34 grams.
When you convert to _________ you get rid of the placeholder zeros.
What is Scientific Notation.
A methods of problem-solving that focuses on the units used to describe matter, often using conversion factors
What is Dimensional Analysis
Convert 100 km/h to m/s.
What is 27.78 m/s.
TRUE OR FALSE
Is the number 1,234,000 in scientific notation is equal to 1.234x105?
What is False. The correct form is 12.34x106
When you calculate percent error, you ignore the
You ignore the plus and minus signs.
How can you obtain an object`s mass if you know its density and its volume?
Rearrange the Density equation from D=m/v into
m=dxv or mass equals density multiplied by volume.
The difference between an accepted value and an experimental value in called a(n)
What is the percent error.
What is Density.
Density is the ratio that compares the mass of an object to its volume.
Convert 9 centimeters into meters.
What is 0.09 meters.
Round the following to four significant numbers.
a. 12.555 km
b. 1.0009
c. 99.999
d. 23.342999
a. 12.56
b. 1.001
c.99.99
d. 23.34
Convert 50 kilograms into grams.
What is 50,000 grams.
Convert the following into Scientific Notation Form.
a. 5,000,000 km
b. 8,394,000,000
c. 0.000421
a. 5 x 106
b. 83.9 x 106
c. 4.21 x 10-4
A visual display of data that may include plotting data on x- and y- axes is called
What is a Graph.
Solve the following problem: (6 x 109)x(3 x 105)
Give answer in Scientific Notation.
What is 1.815.