Astronomy A: Unit 4 - Quiz 3

_____ is the force that molded Mars' topography.

Volcanism

In Italian, the word canali means _____.

channels

When Martian soil was _____, an unexpected burst of oxygen occurred.

exposed to water

Since _____ is lacking in Martian air, deadly amounts of ultraviolet radiation from the Sun reach the ground.

ozone

The results of all the tests performed by Vikings I and II were attributed to _____ soil chemicals.

reactive

The change of _____ between the southern and northern hemisphere sometimes results in planet-shrouding dust storms.

seasons

When Martian soil was _____, 15 times more oxygen than expected was given off before dropping.

soaked with a nutrient

When Martian soil was _____, not a single compound was detected.

tested for carbon

1- panic 2- fear 3- the largest mountain on Mars 4- the biggest canyon in the solar system 5- discovered Mars has two moons 6- announced the presence of channels on Mars

1- Deimos 2- Phobos 3- Olympus Mons 4- Valles Marineris 5- Asaph Hall 6- Giovanni Schiaparelli

1- a false impression not based on fact 2- fatal; Martian soil to cells 3- a germ 4- pertaining to living things 5- a chemical combination with oxygen and another element

1- illusion 2- lethal 3- microbe 4- organic 5- oxide

1- permanently frozen ground 2- to wander from place to place 3- to choke 4- physical features of a region 5- a special oxygen molecule

1- permafrost 2- rove 3- stifle 4- topography 5- ozone

_____ are spinning columns of air that cause random patterns of dark streaks on Mars' surface.

Dust devils