astr 105 quiz 18 venus in a nutshell

Venus is covered by clouds roughly _________ of the time.

100%

The surface of Venus was mapped by the spacecraft called ______________.

Magellan

The largest feature on Venus is a volcano called ________________.

Maxwell Montes

Because of the very thick atmosphere of carbon dioxide on Venus:

all of the other answers are correcct We cannot see the surface of Venus from Earth based or even space based telescopes the surface of Venus is super-heated by the greenhouse effect the Magellan spacecraft used radar to map the surface

Venus ___________ have oceans.

does not

Because Venus is so similar in size to _________ it is sometimes called its sister planet.

earth

Compared to Earth, Venus is

just a bit smaller

Venus does not have a global _____________ field. It has a liquid interior, but it does not spin fast enough to generate such a field.

magnetic

Venus is sometimes called the ______________ star or the ______________ star, because those are the only times one can see it.

morning, evening

Venus was known since ancient times either as the Morning Star or as the Evening Star, it was often considered to be two different objects, but it was Galileo who discovered the __________ of Venus.

phases

Venus spins ___________ than any other planet taking 243 days to spin once, and it spins backward compared to the other planets.

slower