physics chap#1

What is the purpose of SI prefixes in measurements?

• To create confusion in scientific calculations.

• To simplify the process of measuring only small quantities.

• To provide a standardized way to express large or small quantities in measurements.

• To eliminate the need for units in measurements.

List three common SI prefixes and their symbols.

• Centi (c)

• Deca (da)

• Tera (T)

• 1. Kilo (k), 2. Mega (M), 3. Giga (G)

What is the prefix for one million in the SI system?

• centi

• kilo

• mega

• giga

Convert 5 kilometers to meters using SI prefixes.

• 500 meters

• 5000 meters

• 50 kilometers

• 5,000 kilometers

What is the derived unit for force in the SI system?

• newton (N)

• pascal (Pa)

• watt (W)

• joule (J)

How many grams are in a kilogram?

• 1000 grams

• 200 grams

• 1500 grams

• 500 grams

What is the symbol for the prefix 'deci'?

• e

• d

• c

• f

If a measurement is in nanometers, how many meters is that?

• 1 nanometer is 1e-3 meters.

• 1 nanometer is 1e-12 meters.

• 1 nanometer is 1e-9 meters.

• 1 nanometer is 1e-6 meters.

Explain the significance of scientific notation in physics.

• Scientific notation is only used in chemistry.

• Scientific notation is irrelevant for small measurements.

• Scientific notation is significant in physics as it simplifies the representation and calculation of extremely large or small quantities.

• Scientific notation complicates calculations in physics.

What is the prefix for one billion in the SI system?

• kilo

• tera

• giga

• mega