Failed Planet Formation

Question 1

Asteroid: Ceres

Answer 1

Biggest one found! First one as well. Dwarf planet! Rounded by own gravity.

Question 2

Asteroid: Eris

Answer 2

Elongated Amors type (between Earth and Mars). Second largest dwarf planet and sister of Pluto! Led to Pluto’s demotion to dwarf planet

Question 3

NEA

Answer 3

Near Earth Asteroid, located within 1.3 AU from Earth.

Question 4

Comets

Answer 4

Made of frozen water and gas, as well as nonvolatile dust. Called “Dirty Snowballs”
Revolve around sun in highly elliptical orbits. As they get closer to sun, dust and stuff melts, forming tails.
TWO TAILS: gas ion, and dust. These are always directed away from sun. Ion tail goes straight away from sun. Dust goes close to orbital path.

Question 5

Kuiper Belt

Answer 5

Short term comets! 200 years or less! “Final Frontier”

Question 6

Oort Cloud

Answer 6

Long term comets, 200 years or more!

Question 7

Meteroid

Answer 7

In space. Contain important clues to composition of space

Question 8

Meteor

Answer 8

Shooting star. Bright appearance as it falls through atmosphere. Called a fireball if brighter than Venus at magnitude -4.

Question 9

Meteorite

Answer 9

It hit the Earth’s surface! Classified as stony, stony iron, and iron. Iron contains 80-90% iron, and stony iron is roughly half iron.

Question 10

Hoba

Answer 10

100 tons, largest meteorite found in Namibia, Africa

Question 11

Willamette

Answer 11

Largest meteorite in Oregon, USA, at 15 tons

Question 12

Naming Meteor Showers

Answer 12

Based on constellation it appears to be coming from!

Question 13

Asteroids

Answer 13

Celestial objects with over 75% carbon, 17% silicate iron and nickel. Located in asteroid belt between Mars and Jupiter. Also called minor planets.