9. Metric

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METRIC SYSTEM 
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1000 meters are 1 kilometer*
10 decimeters are 1 meter*
100 centimeters are 1 meter*
1000 millimeters are 1 meter*
1 million micrometers are 1 meter*
1 micron is 1 micrometer*
1 million microns are 1 meter*
1 billion nanometers are 1 meter*
10 billion angstroms are 1 meter*
1 trillion picometers are 1 meter*

1000 tonnes are 1 megatonne*
1000 kilograms are 1 tonne*
1 kilo is 1 kilogram*
1000 kilos are 1 tonne*
1000 grams are 1 kilo*
1000 milligrams are 1 gram*
1 million micrograms are 1 gram*
1 billion nanograms are 1 gram*
1 trillion picograms are 1 gram*

10 deciliters are 1 liter*
100 centiliters are 1 liter*
1000 milliliters are 1 liter*
1 cubic centimeter is 1 milliliter*
1000 cubic centimeters are 1 liter*
1 million microliters are 1 liter
1 cubic millimeter is 1 microliter

1 billion watts are 1 gigawatt*
1 million watts are 1 megawatt*
1000 watts are 1 kilowatt*
1000 milliwatts are 1 watt*

1000 volts are 1 kilovolt*
1000 millivolts are 1 volt*

100 hectares are 1 square kilometer*
10,000 square meters are 1 hectare*

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TIME UNITS  (also in the Time lesson)
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/2013 is 1 year* year***
/2015 is 1 year*
/12 months are 1 year*
4 weeks are 1 month*  week***
/7 days are 1 week*  days***
24 hours are 1 day*  hours***
/60 minutes are 1 hour*
60 seconds are 1 minute*  seconds***
1000 milliseconds are 1 second,  milliseconds***
1000 microseconds are 1 millisecond  microsecond***
1000 nanoseconds are 1 microsecond*  nanoseconds***
1 billion nanoseconds are 1 second*
60 seconds are 1 minute*
60 minutes are 1 hour*
24 hours are 1 day*
7 days are 1 week*
2 weeks are 1 fortnight*  fortnight***
4 weeks are 1 month*
12 months are 1 year*
10 years are one decade*  decade***
100 years are one century*  century***
1000 years are one millennium*  millennium***

In 1 day the sun goes around the earth, sun*** goes around*** earth***
In 1 month the moon goes around the earth, moon***
In 1 year the earth goes around the sun*

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