The Viking landers sent back pictures of the reddish-colord, barren, rocky, windswept surface of what planet
a) mercury b) jupiter c)uranus d) mars
What is d)mars
100
Two of the inner planets are _ a) venus and saturn b) mars and venus c) earth and pluto d) mercury and jupiter
What is B) mars and venus
100
This planet has no true atmosphere a) Mars b) saturn c) jupiter d) mercury
What is d)mercury
100
A comet develops a coma because of __ a) gravity b) earth's atmosphere c) the Oort Cloud d) heat form the sun
What is d) heat from the sun
100
The structure of a comet is considered to be like a large, _, mass of frozen ice and rock. a) solid planet b)dirty snowball c)cratered moon d) none of the above
What is b)dirty snowball
200
Methane absorbs the red and yellow light on __, while teh clouds of these planets reflect the green adn blue light.
a) venus and earth b) saturn and jupiter c) uranus and neptune d) nepture and venus
What is c) uranus and neptune
200
smaller pieces of rock from old, broken-up comets become__ a) comets b)meteors c) meteoriods d) planetoids
What is c)meteoroids
200
__ was the first planet studied by the Voyager space probes a) jupiter b) saturn c) uranus d) neptune
What is a)jupiter
200
A comet develops a tail because of __ a) a solar wind b) earth's atmosphere c) the Oort cloud d) Jupiters gravitational pull
What is a) solar wind
200
Solar energy trapped by gases in Venus's atmosphere causes __ a) clouds to form b) its slow rotation c) the greenhouse effect d) a cooling effect
What is c) the greenhouse effect
300
__ has colorful clouds in bands of white, red, tan, and brown. a) Saturn b) Uranus c) jupiter d) neptune
What is Jupiter
300
Small pieces of rock that enter Earth's atmosphere at speeds of 15 to 70kms and burn up are called a) stars b)meteors c) meteorites d) asteroids
What is b)meteors
300
___for a plaet to form in the asteroid belt a) it was too cold b) some of the asteroids were too large c) jupiter's gravity may have been too great d) the asteroids moved too slowly
What is c) jupiter's gravity may have been too great
300
Scientist hypothesize that the Sun formed____ a) less than a billon years ago b) from a cloud of gas and dust c) less than a millon years ago d) from a chunk of jupiter.
What is b) from a cloud of gas and dust
300
The first and only American space mission to Mercury was __ a) voyager 1 b) voyager 2 c) mariner 10 d) apollo II
What is c) Mariner 10
400
Most of the frozen ice in a comet's __vaporizes after the comet's many trips around the Sun. a) coma b)tail c) heart d) nucleus
What is d)nucleus
400
____ are pieces of rock that strike the surface of a moon or planet. a) meteroids b) comets c) meteor showers d) meteorites
What is d) meteorites
400
Pluto is different from the outer planets because__.
a) it may been a moon of an inner planet that escaped
b) it formed near Earth and moved outward
c) it is close to the inner planets
d) none of the above
What is d) none of the above
400
WHich is a not a dwarf planet a) pluto b)eris c) mercury d) ceres
What is c) mercury
400
Water is found as a solid, liquid, and gas on____
a) mercury b) venus c) earth d) mars
What is c) earth
500
Vaporized gases and released dust form a bright cloud called a(n)__ around the solid part of a comet. a) coma b) core c) heart d) nucleus
What is a)coma
500
Pluto is considered a __ planet a) large b)dwarf c) small d)huge
What is b)dwarf
500
Evidence suggests that __ orginiate in the Oort Cloud located beyond the orbit of Pluto. a) comets b) asteroids c) meteoroids d) meteroites
What is a)comets
500
People once believed that all planets adn stars orbited around a) mercury b) venus c) earth d) mars