Other members of Solar System

Question 1

Astronomy

Answer 1

the scientific study of any celestial objects like stars, planets and the likes; as well as all phenomenon in the universe.

Question 2

Cosmology

Answer 2

is a branch of astronomy that involves the origin and evolution of the universe.

Question 3

Non-planet members

Answer 3

• Asteroids
• Meteors
• Comets

Question 4

ASTEROIDS

Answer 4

• solid, rocky-metallic
  and irregularly shaped objects in the space
• Aster=star, -oid=rock or planet
• diameter ranges from 50mm-1000km

Question 5

Largest known asteroid

Answer 5

Ceres

Question 6

The second most massive celestial
body found in the asteroid belt.

Answer 6

Vesta

Question 7

ASTEROID BELT

Answer 7

area with high concentration of asteroids;
found between Mars and Jupiter

Question 8

Classification of Asteroids according to composition

Answer 8

• S type
• C type
• M type

Question 9

S type

Answer 9

• also known as Bright-S
  silicaceous
• made up of
  silicate of iron and
  magnesium
• found in the inner belt
• 17% of known asteroids

Question 10

C type

Answer 10

• also known as dark C
  carbonaceous
• mostly
  hydrogen
• found in the outer belt
• 75% of known asteroids

Question 11

M type

Answer 11

• also known as bright M
  metallic
• composed of metallic iron
• found in the middle belt
• 8%

Question 12

Classification of Asteroids according to orbit

Answer 12

• Near earth asteroids
• Trojan (within jupiter’s orbit)

Question 13

Comets

Answer 13

• Came from the Greek word
  kome or komete, meaning long
  haired.
• Small, icy objects that orbit the sun
  and has a long tail of gas.

Question 14

Parts of a Comet

Answer 14

• Nucleus
• Coma
• Tail

Question 15

Nucleus

Answer 15

• main body of the comet;
• composed of rocky or metallic material together with frozen water, ammonia, methane and carbon dioxide (ices)

Question 16

Coma

Answer 16

• halo of gas that surrounds nucleus
• It is formed when the comet comes close enough to
  the Sun.

Question 17

Tail

Answer 17

• the solar radiation and the solar wind push the coma and create the tail.
• Ion tail – sublimation of frozen gases
• Dust tail – tiny dust particles from the nucleus

Question 18

Short term comet

Answer 18

can orbit the sun in
less than 200 years

Question 19

Long term comet

Answer 19

takes 30 million yrs to
orbit the sun

Question 20

How to name comets

Answer 20

• Named by year
• Named after people
• Investigators

Question 21

Halley’s comet

Answer 21

• PERIODIC COMET
• returns to Earth’s vicinity
  about every 76 years.
• The last time it was
  here was in 1986, and
  it is projected to
  return in 2062

Question 22

Meteoroids

Answer 22

• much smaller that asteroids,
  actual debris of an asteroid/comets
• what we call “space rocks”
  that range in size from dust grains to small
  asteroids.

Question 23

Meteors

Answer 23

known colloquially as a shooting star or falling star , term used for meteoroid that already entered the earth atmosphere

Question 24

Meteorites

Answer 24

term used for meteor that has already hit or reach the earth’s
surface

Question 25

Three Types of Meteorites

Answer 25

Iron (metallic)
Stony (rocky)
Stony iron