7.9 A

Which planet has an oxygen presence in its atmosphere as per the data provided?

• Mercury

• Venus

• Earth

• Mars

According to the chart, which planet has water in the form of solid, liquid, and gas?

• Mars

• Jupiter

• Earth

• Neptune

Which planet, according to the table, may have water ice at the poles and also has traces of atmosphere?

• Mercury

• Venus

• Mars

• Jupiter

The outer four planets are called...

• Dwarf Giants

• Smoky Giants

• Gas Giants

• The Giants

Earth’s ____________________________ helps protect life from ultraviolet radiation.

• ozone layer

• oxygen content of atmosphere

• presence of water

• proximity to the Sun

Tags

112.27.b.9.C

Match the following

• Space suit

• The protective gear that protects

  astronauts from the cold, airless

  environment of space

• Accommodations

• The specialized equipment used to

  conduct research and repair damaged

  equipment

• Space station

• A man-made laboratory that is placed in

  space for research

• Instruments

• The living quarters and equipment used to

  protect astronauts while in space

Tags

112.27.b.9.C

​ (a)   protect astronauts from the cold temperature and

provide ​ (b)   for the astronauts to breathe.

• space suits

• oxygen

• helmets

• jet packs

• velcro

• carbon dioxide

Tags

112.19.b.9.B

Earth’s atmosphere is mostly made up of the gases ___________________________ and

_______________________________.

• Nitrogen and Carbon Dioxide

• Oxygen and Carbon Dioxide

• Nitrogen and Oxygen

• Argon and Nitrogen

Tags

112.27.b.9.C

There is some evidence to suggest that Mars once had liquid ​ (a)   ,

though now it may be trapped as ​ (b)   .

• water

• ice

• oxygen

• nitrogen

• rock

Tags

112.27.b.9.C

The helmet on the spacesuit must be made of a tough plastic. The plastic must be tinted to protect an astronaut's eyes from the blinding light of the ​ (a)   .

• Sun

• moon

• meteor

• Earth

Tags

112.27.b.9.C