1. September 22, 2011 IOT POLY ENGINEERING I1-12 DRILL: NEATLY DEFINE … A. MEGABYTE B. NANOMETER C. MICROGRAM D. KILOCALORIE

2. IOT POLY ENGINEERING I1-12 DRILL: NEATLY LETTER THE DEFINITION OF … A. MEGABYTE - 10 6 bytes B. NANOMETER - 10 -9 meter C. MICROGRAM - 10 -6 gram D. KILOCALORIE - 10 3 calorie Answers to today’s Drill

3. IOT POLY ENGINEERING I1-12 SUMMARY OF THE 7 FUNDAMENTAL SI UNITS: 1.LENGTH - meter 2.MASS - kilogram 3.TIME - second 4.ELECTRIC CURRENT - ampere 5.THERMODYNAMIC TEMPERATURE - Kelvin 6.AMOUNT OF MATTER - mole 7.LUMINOUS INTENSITY - candela

4. IOT POLY ENGINEERING I1-12 THE INTERNATIONAL SI SYSTEM OF MEASUREMENT IS COMPRISED OF 7 FUNDAMENTAL (OR BASE) QUANTITIES. THE ENGLISH SYSTEM, USED IN THE UNITED STATES, HAS SIMILARITIES AND THERE ARE CONVERSION FACTORS WHEN NECESSARY. meter, kilogram, second, Kelvin, etc. foot, pound, second, Fahrenheit, etc.

5. IOT POLY ENGINEERING I1-12 Combine Base Units to Make New Units Area = Length x Length Speed = Length / Time Density = Mass/Volume = Mass / (Length 3 ) Force = Mass x Acceleration = Mass x Length/Time 2 DERIVED UNITS

6. IOT POLY ENGINEERING I1-12 1) How much time does it take for sunlight to reach Earth Space Worksheet 150 million km 150 x 10 6 km 1 km 10 3 m 3 x 10 8 m s 500 s 60 s 1 min 8.3 min xx x=

7. IOT POLY ENGINEERING I1-12 7) How long would it take to travel the shortest distance from Earth to Mars if the spacecraft at 18,000 km/hr? Space Worksheet Distance from sun to Mars 228 x 10 6 km Distance from sun to Earth150 x 10 6 km Distance from Earth to Mars 78 x 10 6 km 78 x 10 6 km 18000 km 1hr 24 hrs 1 day xx 180 days

8. IOT POLY ENGINEERING I1-12 7) How long would it take to travel the shortest distance from Earth to Mars if the spacecraft at 18,000 km/hr? Space Worksheet Distance from sun to Mars 228 x 10 6 km Distance from sun to Earth150 x 10 6 km Distance from Earth to Mars 78 x 10 6 km 78 x 10 6 km 18000 km 1hr 24 hrs 1 day xx 180 days

9. IOT POLY ENGINEERING I1-12 9) If a softball represents the Sun, what diameter sphere would represent the Earth? Space Worksheet Sun is softball = 4 inches Let Earth diameter = x Sun’s diameter= 1,392,000 km Earth’s diameter = 12,756 4 in x 1,392,000km 12,756km = x= 0.037 in

10. IOT POLY ENGINEERING I1-12 9) If a softball represents the Sun, what diameter sphere would represent the Earth? Space Worksheet Sun is softball = 4 inches Let Earth diameter = x Sun’s diameter= 1,392,000 km Earth’s diameter = 12,756 4 in x 1,392,000km 12,756km = x= 0.037 in

11. IOT POLY ENGINEERING I1-12 Convert 2 miles to meters Conversions Convert 10 ns to ms Convert 10 g/cm to kg/Mm Convert 5.2 J/L to kJ/mL