1. function Meaning- something that works great Synonym- works good conditions great Antonym- bad conditions Story sentence-It takes lots of practice to learn how to function in such a different environment New sentence-I finished my science experiment and checked to see if it would function properly.

2. Operator Meaning- a person that operators machines and devises Synonym- fixer, engineer Antonym - a worker Story sentence - “This is your last chance to change your mind,” said the operator. New sentence – The operator is building a car.

3. tethered Meaning - to fasten or restrict as if with a tether Synonym - rope Antonym - unchain Story sentence – In space astronauts are tethered to there spaceship New sentence- In PE class the kids were learning to play tether ball.

4. version Meaning- A type Synonym- Adaptation,clarification Antonym- Confession, declaration Story sentence- Today’s version shield’s astronauts from space’s deadly environment and keeps them comfortable. New sentence-The two components combine well in his version of enchiladas.

5. axis Meaning- imaginary line of rotation Synonym-a straight line Antonym-crooked line New Sentence-an axis is the line from north to south Story sentence-as earth turns on it’s axis, the moon’ gravity causes ocean tides

6. acute Meaning- extremely sharp Synonym- smart, clever Antonym- dumb, dull Story sentence- Its “eagle-eyed” vision is so acute that if the Hubble were on Earth, it could spot a firefly ten thousand miles away. New sentence- Having acute vision helps scientists study the stars.

7. simulate Meaning-To have or to take on the appearance Synonym-Imitate Antonym-To leave and to take nothing Story sentence-NASA doesn’t use the space shot to simulate weightlessness, it trains astronauts abored its KC-135 airplane. New sentence-We saw a device simulate space flight.

8. flawed Meaning- has mistakes Synonym- defective Antonym- perfect Story sentence- Astronauts do repairs on flawed parts of the ship. New sentence- All flawed pieces need to be fixed.

9. delicate Meaning- fragile, easily broken Synonym- breakable Antonym- strong Story sentence- Astronauts make delicate repairs while floating upside down. New sentence- Space crafts have delicate machine parts.

10. adjusted Meaning- to change for improvement Synonym- adapt, fix Antonym- confuse Story sentence- John waited impatiently while Paul adjusted the chair. New sentence- If something looks blurry, your vision needs to be adjusted.