Round Off the Following Measurement to Three Significant Digits: 1255

question 13

Multiple Choice

Round off the following measurement to three significant digits: 1255 g.

• A)125 g
• B)126 g
• C)130 g
• D)1250 g
• E)1260 g

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Definitions:

Methane

A colorless, odorless flammable gas, CH4, used as a fuel and a significant greenhouse gas.

Nitrous Oxide

A colorless gas with a sweet odor, used as an anesthetic and analgesic, and also a significant greenhouse gas contributing to global warming.

Troposphere

The lowest layer of Earth's atmosphere, where all weather takes place, extending up to about 10 kilometers (6 miles) from the surface.

Stratosphere

The layer of the Earth's atmosphere above the troposphere, ranging approximately from 10 to 50 kilometers in altitude, known for its ozone layer that absorbs most of the sun's ultraviolet radiation.