1. Why do astronauts on the International Space Station often do experiments on themselves? How might their findings help people in the future?
Astronauts on the International Space Station often do experiments on themselves to better understand how living in microgravity affects human beings. Their findings could help people stay healthy on future space missions to the moon or even Mars.
(RI.4.5 Cause and Effect)
2. Summarize what happens during a spacewalk.
During a spacewalk, astronauts go outside the ISS to work in space. They wear spacesuits to protect themselves from dangers like the sun’s rays as they install equipment or make repairs to the station.
(RI.4.2 Main Idea and Key Details)
3. In what ways might working on the space station be considered an “extreme job”?
Sample response: Working on the space station can be considered an extreme job because it is 250 miles above Earth, because astronauts stay on the station for months at a time, and because astronauts on the station must deal with the effects of microgravity.
(RI.4.1 Text Evidence)