Measuring luminous intensity quiz 3 PDF

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quiz 3...

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What is the metric unit used for measuring luminous intensity?

Candela

English units of distance include the mile In what country was the metric system originally developed? How many pounds equal 5 kilograms?

France

11 lb

How many grams are there in one kilogram?1000 g The metric system contains _____ basic units of measure. 7 Which of the following is the goal of the metric system?

All of the above

Metrication is complete or nearly complete in almost all countries of the world. TRUE The metric system is an international, decimal-based system of measurement.

TRUE

An apple has a mass of 1.2 hectograms. What is the mass of the apple in grams? 120 g Choose the prefix for 0.01.

centi

What is the prefix for "thousand"?

kilo

How many meters are in a gigameter?

one billion

The circumference of the earth is 40,000 km. The distance from the North Pole to the equator is ¼ of the circumference of the earth, which equals _____ m.

10,000,000

What is the abbreviation for the unit nanometers? nm A microsecond is one _____ of a second.

millionth

The prefix "centi" represents _____. 0.01 The wavelength of light of a particular color is 580 nm. Express it in meters. One gram is equal to _____ nanograms.

1 x 10^9

Which of the following is equivalent to 3.2 mg? The prefix for millionth is "milli".

false

3.2×10^3μg

5.8 x 10^-7m

In the metric system, "kilo" is an abbreviation for 10,000. false The "milli" prefix is used for 10^−3 m.

true

In the metric unit kilogram, "kilo" is the base unit. false Metric prefixes are easy to understand and come in handy when making metric conversions. true Metric prefixes act as a divisor to the base unit that follows.

false

In the metric system, "kilo" is an abbreviation for 10,000. false The metric prefixes are powers of ten that are multiples of three. true Choose the answer that shows the following number correctly written in scientific notation. 430,000

4.3 x 10^5

For what types of numbers is scientific notation especially useful? I. very large numbers II. very small numbersI and II _____ notation allows us to express very large or very small numbers using exponents, which saves time and makes it easier to compare numbers of very different magnitude. scientific Scientific notation is a way of writing very large or very small numbers using _____ to make them easier to work with.

exponents

Calculate: (7.0×105)+(2.5×104)= _____. Solve: (6.825×10−3)×(1.2×10−8)

7.25 x 10^5

8.2 x 10^-11

A dog has a mass of 19 kg. What is the mass of the dog in grams, expressed in scientific notation?

1.9 x 10^4 g

Perform this calculation using scientific notation: (0.003999×108)+(6.00111×108)= _____. 6.00511 x 10^8

Choose the correct representation of this number written in scientific notation. 0.0000535

5.35 x 10^-5

When converting a number to scientific notation, moving the decimal to the left makes the exponent _____ ; while moving the decimal to the right makes the exponent _____. positive, negative...