The Sun Is 1

question 39

Multiple Choice

The Sun is 1.50 × 10⁸ km from the Earth. How long does it take for light to reach us from the Sun?

• A) 2.00 ms
• B) 2.00 s
• C) 0.50 s
• D) 8.33 min
• E) almost instantaneous

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Definitions:

Word Root

The fundamental part of a word that contains its primary meaning, to which prefixes and suffixes can be attached to create new words.

Prefix

A letter or group of letters added to the beginning of a word to alter its meaning or create a new word.

Suffix

An affix that is added to the end of a word to alter its meaning or create a new word.

Combining Forms

In medical terminology, the word root with a combining form vowel (usually an “o”) that aids in making the word pronounceable, particularly when adding a suffix that begins with a consonant.