Earth and Space

What makes it hard for an astronaut to breathe in space?

• harsh temperatures

• is an airless vacuum

• heavy equipment

Astronauts need all of the following to survive in space EXCEPT-

• gravity

• oxygen to breathe

• protective clothing

An astronaut is trying to move from one area of the space shuttle to another. What accommodations does this astronaut need?

• oxygen

• spacesuit

• handle bars

Space stations require an oxygen system because the atmosphere in space -

• is airless

• is humid

• smells bad

Which of the following accommodations on the space station is used by astronauts to combat the effects of microgravity on their bones?

• special handles

• oxygen systems

• exercise equipment

Radios are not required for astronauts to talk to each other when they are in the same room inside the space station because -

• A space station is filled with air that carries sound waves

• astronauts keep their helmets on inside the space station

• astronauts communicate with sign language in the space station

Astronauts wear thick gloves when they perform a space walk outside the space station. The gloves provide protection against -

• low gravity

• nearby comets

• low temperatures

Spacesuits have layers that have high capacity for thermal insulation in order to -

• regulate body temperature in the extremes of space

• prevent the spread of bacteria that thrive in space

• allow communication with the space station

How do astronauts counteract the effects of microgravity on their bones while they are in space?

• monitor sensors outside the space station

• breathe at a faster rate than normal

• use exercise equipment on the space station

What design element of an astronaut’s spacesuit protects him or her from micrometeoroids, which are tiny bits of space debris travelling at high speeds?

• large oxygen tank

• tough outer shell

• small radio communicator