Solar System

Question 1

nebular hypothesis was proposed by who

Answer 1

Emmanuel Swedenborg

Question 2

solar system emerged from a giant cloud of molecular gas and dust

Answer 2

collapse

Question 3

an event upset the balance between the cloud’s internal heat and gravity

Answer 3

collapse

Question 4

it caused the cloud to compress and collapse in on itself

Answer 4

collapse

Question 5

rotated to conservation of momentum

Answer 5

spinning

Question 6

size decreased due to conservation of momentum, thus spinning faster

Answer 6

spinning

Question 7

began to assume a flat disk shape with a bulge at the center

Answer 7

flattening

Question 8

matter aggregated towards the center of the disk, turning very dense and hot

Answer 8

flattening

Question 9

in the cooler spaces far from the center, molecules began to condense into solid or liquid droplets

Answer 9

condensation and accretion

Question 10

gave birth to the sun

Answer 10

condensation and accretion

Question 11

that blew away the cloud’s leftover materials that didn’t form planets

Answer 11

condensation and accretion

Question 12

the solar system was formed through five stages

Answer 12

nebular hypothesis

Question 13

how the solar system originated from a close encounter or collision between the sun and another heavenly object

Answer 13

encounter hypothesis

Question 14

materials formed a cloud of debris that was ____ in the middle portion and ___ at the end

Answer 14

thick - thin

Question 15

began to orbit around the sun and eventually formed into planets

Answer 15

sun star encounter

Question 16

succession of bolts was torn from the sun by the gravity of the passing star

Answer 16

planetesimal hypothesis

Question 17

blots from the far side of the star went to where

Answer 17

nearer distances

Question 18

bolts from the near side of the star went to where

Answer 18

farther distances

Question 19

these bolts grew larger by gathering the

Answer 19

planetesimals, smaller, scattered bodies

Question 20

incorporated components of nebular hypothesis

Answer 20

protoplanet hypothesis

Question 21

_____ in the rotation of the nebula raised the whirlpools of gas in the _____

Answer 21

non uniformity - rotating mass

Question 22

whirlpools of gas condensed into protoplanets

Answer 22

protoplanet hypothesis

Question 23

did not explain adequately the chemical and physical differences of the planets

Answer 23

protoplanet hypothesis

Question 24

he proved that the differences in chemical and physical composition because of temperature

Answer 24

harold urey

Question 25

gases are in constant motion

Answer 25

terrestrial planets

Question 26

lost a huge chunk of their atmosphere

Answer 26

terrestrial planets

Question 27

the ___ from the sun contributed to flowing the gases away from the primordial planets

Answer 27

solar winds

Question 28

composed of mostly non-volatile metals and silicate rocks

Answer 28

terrestrial planets

Question 29

relatively small, rotate quite slowly on their axes

Answer 29

terrestrial planets

Question 30

far from the sun

Answer 30

jovian planets

Question 31

jovian planets are initially what

Answer 31

cool

Question 32

retained most of their gases

Answer 32

jovian planets

Question 33

captured gases that escaped from terrestrial planets

Answer 33

jovian planets

Question 34

composed of gases mostly what

Answer 34

hydrogen and helium

Question 35

they aren’t very dense and rotate fairly rapidly on their axes

Answer 35

jovian planets

Question 36

where is much of the mass of the solar system concentrated at

Answer 36

center

Question 37

the orbit of the planets are on the

Answer 37

same plane

Question 38

all planets _____ the sun

Answer 38

revolve

Question 39

the periods of revolution ____ with _____ distance from the sun

Answer 39

increase - increasing

Question 40

all planets are located at where

Answer 40

regular intervals from the sun

Question 41

planets rotate in what motion

Answer 41

prograde

Question 42

rotates in the same direction as the orbit

Answer 42

proograde

Question 43

planets revolve around what clock motion

Answer 43

counterclockwise

Question 44

inner terrestrial planets are composed of what materials

Answer 44

high melting points (nickel and silicates)