Show:
Meteorites
Meteors
Asteroids
Comets
Bonus
100
What is an iron meteorite?
a meteorite that is composed of mainly iron and nickel
100
What are meteors made up of?
stone-like elements, iron and nickel
100
What are asteroids made out of?
clay, silicate and nickel-iron
100
What is a comet made up of?
ice
100
When was comet Hale-Bopp first seen?
July 23, 1995
200
What is the orbital period of a meteorite?
5-7 years
200
What is the region of space between the orbits of Mars and Jupiter?
asteroid belt
200
How do asteroids form?
particles colliding
200
How do comets form?
collapsing of a giant, defused gas and dust cloud
200
What are pieces of rock and iron mixtures that travel to Earth?
meteorite
300
What size particles clump up together?
tiny, grain-like
300
What year was the impact of a meteor in western Siberia?
1908
300
What does the kuiper belt object?
a bunch of icy worlds and comets
300
Where are comets normally found?
kuiper belt or in the oort cloud
300
What is it called when an asteroid orbits the sun?
an asteroid belt
400
What are the spheres that are form when dust clumps melt called?
chondrules
400
How large was the impact?
200 feet in diameter
400
Where are most asteroids located?
asteroid belt
400
How long does it take long period comets to rotate once around the sun?
anywhere between 100 years and 1,000 years
400
What is an Earthgrazer?
asteroid in an orbit that takes it close to the earth
500
What is the reason that the dust particle clumps melt?
friction
500
Approximately how many meteor craters have been found on Earth?
120
500
How old was the vredefort?
estimated 2 million years old
500
What is one of the famous comets?
Comet Hale-Bopp, Comet Swift, Horace Tuttle, etc.
500
How long does it take a short period comet to rotate once around the sun?
200 years or less