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35 Cards in this Set
- Front
- Back
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Base unit of time
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second
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Base unit of mass
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kilogram
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Base unit of length
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meter
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Base unit of temperature
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Kelvin
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Base unit for the amount of substance
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Mole
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Reference for Kilometer
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a little more than a 1/2 a mile
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Reference for Centimeter
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about the width of your fingernail
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Reference for Millimeter
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about the thickness of a dime
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Reference for Meter
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about the distance from the floor to a doorknob
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Reference for a liter
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About the volume of a quart of milk or a 1/2 a 2L soda bottle
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Reference for a Milliliter
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About 20 drops of water
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Reference for a Gram
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about the mass of a large paperclip
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Reference for a Kilogram
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about the mass of a 1 liter bottle of water
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Reference for a Cubic Centimeter
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about the volume of a box (LxWxH) that contains 1 ml of a liquid
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Reference for a Milligram
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about the mass of 10 grains of salt
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Reference to relate liter and cubic cm
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1 L = cube 10 cm x 10 cm x 10 cm
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1 ml =
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1 cm3
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Standard unit for measuring mass is the:
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kilogram (not gram)
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Difference btwn mass and weight
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Mass is the amount of matter in an object (value won't change when location changes). Weight is a measure of the gravitational pull and changes when gravity changes (ie - on the moon! You will only weigh 1/6th of what you weigh on Earth since their is only 1/6th gravity on Moon)
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Heat energy flows in this direction
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From hotter objects to colder objects
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Thermal expansion
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Most substances (not water) will expand when heated and contract when cooled.
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Two units used to measure the energy of something
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Joules & Calories
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Prefix "deci" indicates
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10 times smaller than the base unit
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Prefix "centi" indicates
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100 times smaller than the base unit
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Prefix "milli" indicates
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1000 times smaller than the base unit
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Prefix "Kilo" indicates
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1000 times larger than the base unit
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Prefix "micro" indicates
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1x10⁶ (1,000,000) times smaller than the base unit
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Prefix "nano" indicates
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1x10⁹ (1,000,000,000 x smaller than the base unit)
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Prefix "Mega" indicates
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1x10⁶ (1,000,000 x larger than the base unit)
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Prefix "pico" indicates
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1x10 12 (1,000,000,000,000 x smaller than the base unit)
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Freezing point and boiling point of water
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0 ⁰C and 100 ⁰C
273 K and 373 K |
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How to convert from Celsius to Kelvin
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Add 273 to the Celsius measurement
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How to convert from Kelvin to Celsius
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Subtract 273 from the Kelvin measurement
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Absolute Zero
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Bottom of the Kelvin scale
Represents no energy 0 K A theoretical value (has never been exactly reached - very close though) |
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Calorie
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Amount of heat needed to change the temperature of 1 g of water 1 degree Celsius
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