chapter 5

Question 1

which planet is 1.00 ua from the sun

Answer 1

mercury

Question 2

what is the fastest moving planet

Answer 2

pluto

Question 3

which planet has 67 known moons

Answer 3

jupiter

Question 4

which planet is the brightest

Answer 4

venus

Question 5

which planet is noted for it’s great red spot

Answer 5

jupiter

Question 6

why is saturn’s moon Titan unique

Answer 6

it has it’s own atmosphere

Question 7

why do scientists theorize that some planets radiate more energy than they receive from the sun

Answer 7

they are heating up as they collapse

Question 8

which planet has the most eccentric orbit

Answer 8

pluto

Question 9

who developed the three laws of planetary motion

Answer 9

Johannes Kepler

Question 10

what are the three factors that determine a planet’s apparent magnitude

Answer 10

albeto
size
distance

Question 11

what are the planets that are farther from the sun than the earth called

Answer 11

superior planets

Question 12

what are planets that are like the earth in density and size called

Answer 12

terresterial planets

Question 13

what do Jovian planets lack

Answer 13

free oxygen and water

Question 14

which planet is called the red planet

Answer 14

mars

Question 15

which planet has space probes shown to have thousands of rings

Answer 15

saturn

Question 16

which planet was discovered in 1846 and confirmed Newton’s law of gravitation because it was discovered less than one degree from its calculated position

Answer 16

Neptune

Question 17

which planet is the smallest

Answer 17

pluto

Question 18

why can we not see Venus in its full phase

Answer 18

it happens behind the sun

Question 19

why is pluto not always the most distant planet in the solar system

Answer 19

it crosses neptunes orbit

Question 20

what observations are not accounted for in the theory of solar system formation by condensation from a single planetary nebula

Answer 20

some of the planets rotate in the opposite direction

Question 21

what is the shape of a planet’s orbit

Answer 21

ellipse

Question 22

what is the farthest point from the sun in a planet’s orbit

Answer 22

aphelion

Question 23

nearest approach to the sun

Answer 23

perihelion

Question 24

what is the downward pull of an object in a olanet

Answer 24

surface gravity

Question 25

what is the apparent reversal in the direction of a planet’s motion compared to fixed stars

Answer 25

retrograde orbit

Question 26

what is to pass in front of the sun as viewed from the earth

Answer 26

transit