Root word refresher

Read each sentence and choose the word that best fits the sentence.

A(n) ___________ researches the world beyond Earth.

• Asterisk

• astronomer

• astronomical

• asteroid

A star-shaped symbol used in printed text to tell someone to read a note at the bottom of a page

• asteroid

• astr

• asterisk

• astronomical

an enormously large or great amount

• asterisk

• astronomical

• asteroid

• astr

The Greek root meaning "star"

• cred

• dict

• geo

• astr

any of the small rocky celestial bodies

that move around the sun (mainly between the orbits of Mars and Jupiter)

• asterisk

• disaster

• credit

• asteroid

audible

• a large room or building where people gather to hear a speech or watch a performance

• short performance to show the talents of someone

• heard or able to be heard

• to say the opposite of something; to deny the truth about something; to deny or disagree with what is being said by someone

audience

• able to be believed; reasonable to trust or believe

• a group of people who gather together to listen to or watch something; the people who watch, read, or listen to something

• large room or building where people gather to hear a speech or watch a performance

• to take the job or position of someone or something; to force people or animals to leave the area where they live; to move something so that it is no longer in its original or regular location

audition

• a short performance to show the talents of someone (such as an actor or musician)

• violent or harmful to people; not friendly to other people

• of or relating to the sound that is heard on a recording or broadcast

• able to be believed; reasonable to trust or believe

The Greek root meaning "life"

• audi

• astr

• geo

• bio

a medicine used it save lives because it destroys harmful bacteria

• biohazard

• antibiotic

• biography

• biology