Physics Unit 1: Active Learning Task

Questions and Answers

Classify the given physical quantities as Base (Fundamental) or Derived Quantities:

Mass = Base (Fundamental) Area = Derived Density = Derived Time = Base (Fundamental) Acceleration = Derived Distance = Base (Fundamental) Temperature = Base (Fundamental) Volume = Derived Velocity = Derived

The fundamental unit of Mass in the SI unit system is ______.

The derived unit of Density in the SI unit system is ______.

kg/m^3

Convert 67,000 tons into kilograms and write into scientific notation.

6.7 x 10^7 kg Signup and view all the answers

Convert 245 km into meters.

245,000 m Signup and view all the answers

Convert 245 km into centimeters.

24,500,000 cm Signup and view all the answers

Convert 245 km into millimeters.

245,000,000 mm Signup and view all the answers

Convert your age in years into days and write the answer as ______.

age x 365 Signup and view all the answers

Convert your age in years into seconds and write the answer as ______.

age x 31,536,000 Signup and view all the answers

Convert your age in years into milliseconds and write the answer as ______.

age x 31,536,000,000 Signup and view all the answers

Convert your age in years into microseconds and write the answer as ______.

age x 31,536,000,000,000 Signup and view all the answers

Convert the distance from the center of the Earth to the surface of the Earth (6400 km) into meters.

6,400,000 m Signup and view all the answers

Convert 6400 km into centimeters.

640,000,000 cm Signup and view all the answers

Convert 6400 km into millimeters.

6,400,000,000 mm Signup and view all the answers

Convert 6400 km into micrometers.

6,400,000,000,000 µm Signup and view all the answers

Convert the area of 25 m^2 into cm^2.

250,000 cm^2 Signup and view all the answers

Convert the volume of 6.5 m^3 into cm^3.

6,500,000 cm^3 Signup and view all the answers

Convert 65385 cm^3 into m^3.

0.065385 m^3 Signup and view all the answers

Convert 5540000 N into scientific notation.

5.54 x 10^6 N Signup and view all the answers

Convert 3500 g into scientific notation.

3.5 x 10^3 g Signup and view all the answers

Convert 6400000 Pa into scientific notation.

6.4 x 10^6 Pa Signup and view all the answers

Convert 745000 N into scientific notation.

7.45 x 10^5 N Signup and view all the answers

Convert 8900000000 Hz into scientific notation.

8.9 x 10^9 Hz Signup and view all the answers

Convert 0.00971 m into scientific notation.

9.71 x 10^-3 m Signup and view all the answers

Convert 0.00000000000382 m into scientific notation.

3.82 x 10^-12 m Signup and view all the answers

Convert the density of diesel (880 kg/m^3) into g/cm^3.

0.88 g/cm^3 Signup and view all the answers

Convert the density of sea water (1.03 g/cm^3) into kg/m^3.

1030 kg/m^3 Signup and view all the answers

How many seconds are there in one year?

31,536,000 seconds Signup and view all the answers

How many years are there in one second?

3.17 x 10^-8 years Signup and view all the answers

Study Notes

Physical Quantities Classification

Base (Fundamental) Quantities include: Mass, Time, Distance, Temperature.
Derived Quantities include: Area, Density, Acceleration, Volume, Velocity.

SI Units of Physical Quantities

Mass: SI unit is kg; Other units include g, mg, cg, µg, ng, ton.
Area: SI unit is m²; Other units include cm², mm², km², mile², ft², in².
Density: SI unit is kg/m³; Other units include g/cm³, g/ml, kg/ml, kg/L.
Time: SI unit is s; Other units include hour, minute, month, year.
Acceleration: SI unit is m/s²; Other units include cm/s², km/s².
Distance: SI unit is m; Other units include km, cm, mm, µm, nm, ft, in, mile.
Temperature: SI unit is K; Other units include °C, °F.

Unit Conversions

Average mass of a ship: 67,000 tons = 67,000,000 kg = 6.7 x 10⁷ kg.
Distance from Sohar port to Sultan Qaboos Port Muscat: 245 km = 245,000 m = 2.45 x 10⁵ m; 24,500 cm = 2.45 x 10⁶ cm; 245,000 mm = 2.45 x 10⁸ mm.

Age Conversion

Age expressed in approximate units (convert based on personal age):
- Days: Age in years × 365 = scientific notation format.
- Seconds: Days × 86,400 = scientific notation format.
- Milliseconds: Seconds × 1,000 = scientific notation format.
- Microseconds: Milliseconds × 1,000 = scientific notation format.

Earth Measurements

Distance from Earth’s center to surface: 6,400 km = 6,400,000 m = 6.4 x 10⁶ m; 640,000,000 cm = 6.4 x 10⁸ cm; 6,400,000,000 mm = 6.4 x 10⁹ mm.

Area Conversion

Area of rectangular iron sheet: 25 m² = 250,000 cm² = 2.5 x 10⁵ cm².

Volume Conversion

Volume of cylinder: 6.5 m³ = 6,500,000 cm³ = 6.5 x 10⁶ cm³.
Volume of engine oil: 65,385 cm³ = 0.065385 m³ = 6.5385 x 10⁻² m³.

Scientific Notation and Prefixes

Following conversions for identified physical quantities require completion in scientific notation:
- 3,500 g = 3.5 x 10³ g.
- 6,400,000 Pa = 6.4 x 10⁶ Pa.
- 745,000 N = 7.45 x 10⁵ N.
- 8,900,000,000 Hz = 8.9 x 10⁹ Hz.

Density Conversion

Density of diesel: 880 kg/m³ = 0.88 g/cm³ via conversion.
Density of seawater: 1.03 g/cm³ = 1,030 kg/m³ via conversion.

Time Calculations

Seconds in a year: 1 year = 31,536,000 seconds = 3.1536 x 10⁷ seconds.
Years in a second: 1 second = approximately 3.1688 x 10⁻⁸ years.

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Description

This quiz focuses on identifying physical quantities as base (fundamental) and derived quantities. Participants will also demonstrate their understanding of SI units associated with these quantities. Test your knowledge on measurements and conversions in the realm of physical science!