) Which of the ollewing observations indicaes that condtions on Mars may heve be
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Question
) Which of the ollewing observations indicaes that condtions on Mars may heve been suitable for indicates 5) läfe in the past? A, Theryvery 1 extinct volcanes on Mars. B) There is a very deep and long canyon that estends acroun Mars C) Mars has two small moons D) There are dried-up riverbeds on Mars E) Mars has polar caps made of "dry oe. 9) Whidh planet has a ring wystem A) Unanas B) Jupiter C) Neptunde D) Sanum E) all of the above 0) What is the primacy reason why a Pluto flyby mission would be cheaper than a Pluto oebitee A) The flyby can use less expensive cameras than the orbiter TThe uel needed for an orbiter to slow down when it neaches Pluto is very espensive in and ed QThe fue·sedd foranorteler to slow down when it reaches Pao adds a lot of weight to the spacecraft E) The question is incornect in pemeral, orbihers are cheaper than flybys. 11) What is avotnaking? A) the technique of using a planesary aemosphere to change the orit of a spacecral B) the destraction of a spacecraft by the intense pressure as it descends into the atmosphere C)the use of a planetary atmosphere to redirect a spacecraft toanother planet Dj the controlled landing of a spacecrafht on a planetary surface E the gradual decrease of speed as a spacecraft leaves the solar sysem 12) Which of the Solowing is not an advantage of spacecrate Dlybys over ground-based telescope 12 A) Spacecraft can measure local magnetic fields B) Spacecraft can make highly detailed images of the planet and its moons Spacecraft can monitor changes in a planert's atmosphere over long times D) Spacecraft can view backli" views of planwtary rings E) Spacecraft can sample the gravitational field of a planet 13 13) Which of the following statemenes is et an observed pathom of motion in our solar system A) Most planets notate in the same direction in which they orbit B) All planets orbit the Sun in the same direction C) Most planets orbit at the same speed D) Almost all moons orbit their planet in the same direction as the planet's rotation E) Most planetary orbins lle nearly in the same plane.Explanation / Answer
Answers:
8. Option D
There are dried-up riverbeds on Mars.
9. Option E
All of the above (JUPITER, SATURN, URANUS, NEPTUNE)
10 Option C
The fuel needed for an orbiter to slow down when it reaches Pluto adds a lot of weight to the spacecraft.
11 Option A
The technique of using a planetary atmosphere to chage the orbit of a spacecraft.
12 Option C
Spacecraft can monitor changes in a Planet's atmosphere over long times.
13 Option C
Most planets orbit at the same speed.
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