The Solar System

Question 1

Geocentric

Answer 1

Eudoxus 380 B.C

Question 2

Heliocentric

Answer 2

Aristarchus Of Samos 270B.C
Republished by Nicolaus Copernicus
1543

Question 3

In 1775, who suggested that the solar system came from a nebula

Answer 3

Immanuel Kant

Question 4

Any numerous clouds of gas or dust in interstellar space

Answer 4

nebula

Question 5

1778, who believed the sun collided with the comet

Answer 5

George-Louis Lerlerc Comte De Buffon

Question 6

Nebular Hypothesis

Answer 6

1796, Pierre Simon Marquis de Laplace, 19th century Slowly rotating mass of incandescent gases

Question 7

Planetisimal Theory

Answer 7

Planetisimal means small planet
about 1905
Forest Ray Moulton (astronomer) and Thomas Chrowder Chamberlin (geologist), proposed as a replacement for the laplacian version of nebular hypothesis

Question 8

Tidal Theory

Answer 8

1918,
Sir James Jean and Harold Jeffreys
Planet formed directly from the original mass of gas pulled out of the sun by a passing star

Question 9

Lyttleton Theory

Answer 9

Another collision theory
Astronomer Raymond Arthur Lyttleton
Sun = Double star
“Binary star”
Better explanation of all collision theory

Question 10

Dust cloud theory

Answer 10

Astronomer Fred L. Whipple
Solar system to-be was first a vast of cosmic dust and cloud which became concentrated. This interstellar mass called solar nebula collapsed
The solid particles within it collided, struck together and became planets
The gases at the center if the former cloud developed in to the sun
4.5-5 billion years ago
Most accepted theiry

Question 11

Sun

Answer 11

is mostly hydrogen and helium
74% hydrogen 24% helium 2% iron nickel oxygen

Question 12

two kinds of planet

Answer 12

Terrestrial (solid plantes) earth like and Jovian (gas giants) jupiter like

Question 13

planet greek word meaning

Answer 13

wanderer

Question 14

greek verb planasthai

Answer 14

to wander

Question 15

mercury

Answer 15

88 days per year

Question 16

venus

Answer 16

twin sister of earth
almost a perfect sphere
hottest planet

Question 17

earth

Answer 17

living planet, one moon luna

Question 18

mars

Answer 18

also called red planet, (presence of iron oxide)
2 moons- Phobos (fear)
deimos (power)(second smallest moon)
olympus mons (largest volcanic mountain)
Valles marineris largest canyon system in the solar system

Question 19

jupiter

Answer 19

largest and most massive planet
fastest spinner
great red spot (typhoon)
79 moons, 53 named
Galileo Galilei discovered moon Europa, callisto, ganymede(largest moon in the solar system) and IO
jupiter LII is the smallest moon in the solar system
4 rings- Halo, main, amalthea gossamer and thebe gossamer

Question 20

Saturn

Answer 20

discovered by galilieo galilei
“ringed planet”
7 rings- D, C, B, A, F, G, and E
main rings A B C
82 moons
Titan is the second largest planet

Question 21

uranus

Answer 21

discovered by william Herschel
march 13 1781
coldest planet
11 rings
27 moons
Titania-largest moon of uranus

Question 22

neptune

Answer 22

atleast 5 main rings with 4 prominent ring arcs that’s known
rings are called Galle, Leverrier, Lassell, Arago, and Adams
has 14 moons

Question 23

long period comets

Answer 23

oort cloud

Question 24

short term comet and example

Answer 24

kuiper belt
halley’s comet 76 years, 29 appearances since 240 B.C

Question 25

sometimes called flying mountain

Answer 25

asteroid

Question 26

accretion

Answer 26

accumulation of particles into a massive object by gravitational attracting more matter.