analyse
to examine something
ancestor
relative, sometimes far back in time
ancient
belonging to times that are long past
atmosphere
the mixture of gases that surrounds the earth
atom
the smallest element of something
Baffin Island
island outside Canada
electron
tiny piece of matter with a negative electric charge
evaporate
something changes into gas
glacier
mass of ice that does not melt in the summer
impediment
a thing that stops or delays the movement of something
indistinct
not clear
interact
to act or have an effect on each other
Inuit
American Eskimo
ionosphere
the area 80 to 500 kilometres from the Earth's surface
Kiruna
town in the north of Sweden
Kvikkjokk
town in the north of Sweden
Lapplander
native people in Scandinavia
lubricant
substance that is put on something to make it move easily
magnetopause
outer limit of the magnetosphere
magnetic tape
a type of plastic tape used for recording sound or pictures
magnetosphere
limited area in space where magnetic fields control the movement of different particles
molecule
a group of atoms
mythology
ancient stories
Närke
county in Sweden
particle
a very small part of something
plasma
a gas that contains positive and negative charged particles
¼B>proton
a very small piece of matter with a positive electric charge
Småland
county in Sweden
solar wind
gas, plasma escaping from the sun
sounding rocket
rocket for which the whole or part of the rocket returns to earth, used to send measurement instruments to space
substorm
disturbance in the magnetic field, often depending on the solar wind
surplus
an amount that remains after one has used all one needs
Vilhelmina
town in the north of Sweden