Measurement International System Units (SI) –Mass: kilograms –Length: meters –Time: seconds...
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Transcript of Measurement International System Units (SI) –Mass: kilograms –Length: meters –Time: seconds...
MeasurementInternational System Units
(SI)–Mass: kilograms–Length: meters–Time: seconds–Volume: liters–Temperature: Kelvin or °Celsius
meters
°Celsius
seconds
kilogramsliters
SI Units
Mass vs. Weight???Mass is the
measurement of the amount of matter in a given amount
of a substance.
Weight is the
measure of the pull of gravity on a given
mass.
BUT. . .
In other words. . .
The weight of an object on earth is greater than the weight of the same object on the moon, since the Earth
has more gravity than the moon.
The mass of the object (the amount of stuff) is the same on the earth as
it is on the moon.
Mass is the amount of stuff.
Weight is the affect of gravity
(measured by a scale) on a given
mass.
However . . .On Earth, the mass in grams
equals the weight in grams. So for values ON EARTH we often use
the terms weight and mass interchangeably. Just be careful, because where gravity values are different from on Earth (the moon, in space, another planet, etc.) the mass will be the same as on Earth but the weight will be different!
1000
Metric Units . . .
grams
equal 1 kilogram
MASS
Metric Units . . .
1000
milliliters
equal 1 liter
VOLUME
Metric Units . . .
Kelvins or °Celsius
TEMPERATURE
Metric Units . . . LENGTH
1000 millimeters = 1 meter
100 centimeters = 1 meter
Metric Units . . . TIME
60 seconds = 1 hour
To measure the length of our classroom in SI you
would use
A: litersB: meters
C: feetD: yards
To measure a person's body temperature in SI you would
use
A: degrees CelsiusB: degrees Farhenheit
C: kilogramsD: meters
To make a recipe using SI units, you would measure
flour and sugar in
A: cupsB: ouncesC: metersD: grams
To measure how much water a tablespoon holds
in SI you would use
A: cupsB: ounces
C: millilitersD: liters
A cubic centimeter (cc) is used to measure volume
and is the same as a milliliter.
A: TrueB: False
64 km = _____ meters
A: 64,000B: 6,400C: 3200D: 3.2
373 g = ______ kg
A: 0.373B: 3.73C: 6.5
D: 373,000
897 mm = _____ cm
A: 8970B: 897C: 8.97D: 89.7
Mass and weight are different because
A: weight measures amount of stuff while mass takes into
account gravityB: mass measures the amount of
stuff while weight measures gravity's affect on mass
C: gravity has no affect on weight or mass
D: mass is measured in pounds while weight is measured in
grams
Mass is the measure of the amount of material.
A: TrueB: False
When gravity acts upon a particular mass it is measured as weight.
A: TrueB: False
A 10kg mass is weighed on Earth and on the moon. The
moon has less gravity. Which of the following is true?
A: The mass weighs more than 10kg on Earth and less than 10kg on the moon.B: The mass weighs 10 kg on Earth and
more than 10 kg on the moon.C: The mass weighs 10 kg on Earth and
on the moon.D: The mass weighs 10kgs on Earth and
less than 10kgs on the moon.
Mars has less gravity than Earth. What will the mass of a 41g ball be on
Mars?
A: more than 41gB: less than 41g
C: 41gD: there is no way to
tell
Pedro uses a triple beam balance scale in science lab to measure the mass of an apple. He determines the apple to have a mass of 120 grams. What is the
weight of the apple in SI units?
A: 5.2 ouncesB: 60 gramsC: 120 gramsD: 0.2 pounds
A standard sized paperclip has a mass of
approximately one gram. What would you
estimate to be the mass of a golf ball?
A: 45 gramsB: 1 kg
C: .45 gramsD: 10 kg
Which of the following is NOT a SI unit?
A: KelvinsB: kilometers
C: degrees CelsiusD: degrees Fahrenheit
Since density is a measure of mass per volume (in
other words - mass divided by volume), what SI units would be appropriate for
describing density?
A: grams/literB: liters/gramC: cm/gramD: ml/meter
0.25 liters = ______ mL
A: 250B: 25C: 2.5
D: 0.25
To measure the volume of a bucket in SI you
would use
A: gramsB: meters
C: cubic centimetersD: ounces
What is the boiling point of water in SI?
A: 0 degrees CelsiusB: 100 degrees Celsius
C: 212 degrees Fahrenheit
D: 100 degrees Fahrenheit
What is the length of the black line in millimeters?
A: 5.7B: 57
C: 5 and three quartersD: 570
It is good practice when using a meter stick to measure from the 1 cm mark instead of the end. What is the length of the
black line in cm?
A: 19.8B: 18.8C: 198D: 188
What is the temperature
reading of the thermometer
pictured?
A: 28 degrees Fahrenheit
B: 28 KelvinC: 28 degrees
CelsiusD: 20 degrees
Celsius
The thermometer pictured shows the freezing point of water. Which of the following is true? The freezing point of water
A: is zero degrees Celsius and 32 degrees FahrenheitB: is zero degrees Fahrenheit and 32 degrees CelsiusC: is zero KelvinD: is zero degrees Celsius and zero degrees Fahrenheit
The thermometer pictured shows the average human body temperature. What is that temperature in SI?
A: 98.6 degrees CelsiusB: 98.6 degrees FahrenheitC: 37 degrees CelsiusD: 37 degrees Fahrenheit