Gap Fill - Astronauts' DNA - Level 2


  • Choose the correct word from the drop-down menus below.
  • Click the button at the bottom to check your answers.
  • Press the "refresh" button on your browser to play again.
  • After this paragraph, go to Paragraph 2.

   blood      cancer      days      extreme      factors      mutations      new      radiation      risk      space  

Paragraph 1

Scientists found a risk to space travel. They found that our DNA can change when going into . This change could increase the of astronauts getting . The scientists did research on the of 14 NASA astronauts who flew on the Space Shuttle between 1998 and 2001. They gave blood ten before going into space and three days after returning to Earth. Professor David Goukassian said: "Astronauts work in an environment where many can result in...mutations." He added: "Space ...means there is a risk that... could develop."

Now go to   Paragraph 2.

Back to the astronauts' DNA lesson.

Share this lesson

More Free Sites by Sean Banville

Online Activities