Measurement
What is mass?
Mass: amount of matter in an object
What is the metric unit for measuring temperature?
Celsius
What is the equation to calculate density?
Density = mass/Volume
Convert 10 meters to kilometers and centimeters.
10 meters = 0.01 kilometers = 1000 centimeters
How long was the speed of the car measured for?
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100 seconds
What is volume?
Volume: amount of space an object takes up
What is the metric unit abbreviation for liters?
If an object’s density is over 1 g/cm3, will it float or sink in water?
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Sink
Convert 27 cm3 to milliliters.
27 cm3 = 27 mL
Approximately how long was the car at a complete stop during the 1st minute?How long was the speed of the car measured for?
20 seconds
What tool is used to measure the volume of a liquid?
Graduated Cylinder
What metric unit would be the MOST appropriate to use if expressing the distance between San Diego and Sacramento?
kilometer
If you compare a thin ring of silver with a large block of silver, is the ring’s density greater than, less than, or the same as the block’s density? Explain.
Same
Both items are made of the same material
What is the density of an object with a mass of 50 grams and a volume of 25 cubic centimeters?
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2 g/cm3
What was the maximum speed that the car reached during the measurement?
100 km/h
What tool is used to measure the mass of a liquid?
Balance (or scale)
Recite the order of the metric prefixes that we learned about from smallest to largest.
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milli-, centi-, BASE unit, kilo-
Full list: milli-, centi-, deci-, base unit, deka-, hecto-, kilo-
If an object’s mass (in g) is more than its volume (in mL), will it float or sink in water? Why?
Sink
If the numerator is bigger than the denominator, the fraction will be greater than 1.
What is the volume of an object with a density of 20 g/cm3 and mass of 50 g?
2.5 cm3
What was the car doing between the 15-second mark and the 30-second mark?
Slowing down
If an object is placed into water and the volume of water rises from 34mL to 57mL, what is the volume of the object in cm3? What is this method of measurement called?
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23 cm3
Water displacement
What metric units are appropriate for measuring volume?
L, mL
m3, cm3
Describe how to find the density of an insoluble (can’t be dissolved by water), irregularly-shaped object.
Find the mass with a scale, use water displacement to find the volume, and divide the mass by the volume.
Calculate the density of a rectangular box with a mass of 120kg and the following dimensions:
20cm, 30cm, 400cm
0.5 g/cm3
Which 5-second interval had the biggest change in speed?
Between 95 and 100 seconds