Unit 2 Lesson 6

Read each item carefully. Choose the correct answer. The layer of gas that surrounds Earth is called its

• atmosphere.

• streambed.

• preparation.

• interruption.

Read each item carefully. Choose the correct answer. Part of a spacecraft that can be detached is a

• decoy.

• kindling.

• grievance.

• module.

Read each item carefully. Choose the correct answer. What does the word mission mean in this sentence? The group planned the mission carefully.

• a new building

• a special job

• a protected area

• a musical show

Read each item carefully. Choose the correct answer. When one object strikes another, it is called

• festive.

• sprouting.

• muffler.

• impact.

Read each item carefully. Choose the correct answer. A circle of light is called a

• groove.

• panel.

• halo.

• swab.

The landing of a space shuttle on Earth is best compared to a

• hot-air balloon.

• graceful bird.

• falling meteoroid.

• gliding plane.

Which sentence from the selection best supports your answer for Part A?

• The shuttle sails toward the earth like a glider at an immense speed.

• As gravity increases, the astronauts feel the heaviness in every way.

• The spacecraft collides with the thick gasses of the atmosphere, causing friction and the light and heat that come with it.

• After they get used to floating, they learn to zoom along from place to place, gliding like graceful birds.

Why are astronauts strapped in when they sleep?

• because the flight is bumpy

• the spacecraft makes fast turns

• so they do not float away

• objects might strike them

Which of these is an example of a sensory detail?

• a flight into space

• butterflies in their stomachs

• gravity exists in space

• the landing module detaches

Which of these events happens first?

• Astronauts feel full gravity.

• The pilot slows the shuttle.

• The shuttle detaches from the ISS.

• Landing gear descend from the shuttle.