Grade 6 Answers to the Final 2 Review Sheets

Clothing in Space Answers

1. When does an astronaut where an EMU?

When astronauts work in the cargo bay, outside the Shuttle or on the Moon.

2. What do the letters EMU and PLSS mean?

EMU – Extravehicular Mobility Unit

PLSS- Primary Life Support System

3. What is unusual about the liner or “long johns” of an EMU?

They are filled with tubes of water to keep the astronaut cool.

4. How do astronauts make the EMU’s fit the different size bodies?

All pieces come in different sizes and can be attached to the suit.

5. What does the PLSS carry?

Enough oxygen for 7 hours of work outside the cabin.

Keeping Space Clean Answers

1. Why must trash be stored so carefully on the Space Shuttle?

It quickly breeds unhealthy germs that can rapidly spread in a closed area like the Space Shuttle.

2. What do astronauts do with left over food and empty containers?

They are put into bags and tightly sealed.

3. Where is garbage placed on the Space Shuttle?

In a special storage locker that is emptied upon their return to Earth.

4. Why do you think waste materials are brought back to Earth?

Come up with your own reasoning!

5. How could waste and laundry become a problem on the Space Station?

Come up with your own reasoning!