Life Without Gravity

According to "Life Without Gravity," how does weightlessness affect the circulation of blood?

• It causes blood to flow more slowly.
• It causes blood to flow to the head.
• It causes blood to flow more quickly.
• It causes blood to flow to the legs.

According to the text, why can astronauts' muscles become weak?

• Without gravity, the blood is rerouted from the legs to the head.
• With gravity, the body "grows" by as much as several inches.
• Without gravity, eating is difficult, so the body does not get proper nutrition.
• Without gravity, the muscles do not push or pull on the body's bones.

According to the passage, what might happen if astronauts' bones become very weak?

• The astronauts would throw up when they returned to Earth.
• Thier bones would snap when they returned to Earth.
• The astronauts would continue to grow when they returned to Earth.
• Thier hearts would pump harder when they returned to Earth.

Which detail from the passage supports the main idea that weightlessness makes bones "thin and spongy"?

• Astronauts "grow" taller
• Astronauts lose bone tissue.
• Astronauts develop straight spines.
• Astronauts enjoy weightlessness.

Which sentence is the topic sentence of this paragraph from the passage?
Worst of all is how their stomachs feel. During the first few days in space, the inner ear - which gives people their sense of balance- gets confused.  Many astronauts become nauseous.  They lose their appetites.  Many throw up.  Many throw up a lot.

• Worst of all is how their stomachs feel.
• Many astronauts become nauseous.
• They lose their appetites.
• Many throw up.

According to the passage, when does weightlessness become "fun"?

• when  you try to eat while experiencing nausea
• when you walk on a treadmill twice a day
• when your heart and spine adjust to its effects
• when the food you ordinarily dislike tastes bland

According to the passage, what happens if you pour milk in a weightlessness environment?

• It splatters on the floor.
• It stays in the container.
• It forms into balls.
• It turns into cream.

According to the passage, what happens if you do not have a clamp on the straw you are drinking through in a weightlessness environment?

• Liquid flows out after you stop drinking.
• The straw becomes clogged with liquid.
• The straw bursts apart.
• You choke on the liquid.

Why did the astronaut Jerry Linenger say his body "felt like a 500-pound barbell"?

• He had gained weight.
• He was not used to gravity.
• He had been very sick.
• He had not eaten properly.

Which title best describes "Life Without Gravity"?

• "How Astronauts Eat"
• "How to Become an Astronaut"
• "The Ups and Downs of Weightlessness"
• "The Difficulties of Outer Space"