Unit 9 Review

The condition in which people or objects appear to be weightless.

• Gravity

• Space walk

• Mass

• Microgravity

What are the conditions in space?

• extreme temperatures, no atmosphere, microgravity, Ultraviolet radiation
• extreme temperatures, no atmosphere, microgravity, no radiation
• extreme temperatures, no atmosphere, macrogravity, Ultraviolet radiation
• extreme temperatures, no atmosphere, macrogravity, Radiation

Which of these is a place where humans live and study space?

• Moon probe
• Mars Rover
• Space Shuttle
• International Space Station

What factor is being considered when items are attached in the space station?

• air pressure
• microgravity
• heat
• oxygen need

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

• Special handles

• Velcro® straps

• Exercise equipment

• Oxygen system

Which of these items is not needed to sustain life in space?

• oxygen
• food
• water
• tools

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

• the space station is filled with air that carries sound waves.

• astronauts keep their helmets on inside the space station.

• computers are used to communicate inside the station.

• astronauts communicate with sign language inside the station.

Why is a space suit insulated?

• regulate temperature- protect against hot/cold
• to keep the astronaut from dehydrating
• so they can use the bathroom in space
• so they can breathe

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

• low gravity.

• nearby comets.

• low oxygen.

• low temperatures.

Earth is 150 mil. km from the Sun. If it was 200 mil. km away, it wouldn't support life because

• there would be less exposure to solar wind.
• the oxygen would leave the atmosphere.
• the temperature would be too cold.
• the surface water would evaporate