1 Astroids And Commets

Question 1

Iron meteorites

Answer 1

• once part of the core of a long vanished planet or large asteroid.
• highly magnetic
• high density

Question 2

Stone meteorites

Answer 2

• largest group of meteorites
• once forming the outer crust of a planet or asteroid
• there are two types, chondrites and achondrites

Question 3

chondrites

Answer 3

a type of stone meteorite that contain small round droplets of silicate minerals called chondrules

Question 4

achondrites

Answer 4

stone meteorites that are volcanic rock from space, formed from igneous activity. they don’t contain chondrules. (‘a’ means ‘without’)

Question 5

Stony-Iron meteorites

Answer 5

not a common type of meteorite.
divided into two types:
- Pallasites: contain nickel iron and olivine crystals
- Mesosiderites: are smaller and contain both nickel- iron and silicates (look silver and black when polished)