Grade 9 - unit 10 - MLH

It is predicted that humans will fly to Mars _______ a discovery mission.

• with

• on

• under

• for

There have been no manned missions to the moon’s surface _______ 1972.

• since

• in

• for

• from

Mars might have been _______ between 3.8 and 3.1 billion years ago.

                                                                         

• a. habitat

• b. habitual

• c. habitable

• d. habitation

Edwin Hubble was the astronomer for _______ the Hubble Space Telescope is named,

                                                                                       

•     a. which

• b. who

• c. that  

• d. whom

_______ water does not flow in a zero-gravity environment, the astronauts cannot wash their hands under a faucet.

• a. Although

• b. If

• c. When

• d. Since

There are now countless _______ orbiting the earth for telecommunications, and other purposes.                       

• a. spacecrafts

• b. rockets

• c. satellites

• d. telescopes

Microgravity is the condition _______ people or objects appear to be weightless.

                                                                                     

• a. which

• b. where

• c. whose

• d. in which

I’m very careful about what I eat so it’s only _______ I eat fast food.

• a. over the moon

• b. once in a blue moon

• c. out of this world

• d. the sky’s the limit

The man sitting next to me on the plane _______ very nervous because he _______ before.

                                                      

                 

• a. was - never flew

• b. had been - didn’t fly

• c. had been - hadn’t flown

• d. was - had never flown

“Do you think we will travel to Mars in 15 years?”

       “_______ But there’s positive signs.”

• a. I’m not so sure.                                    

• b. Sounds interesting!

• c. It’s wonderful.

• d. Yes, why not?