The core is molten iron (magnetic) and is constantly moving. This moving iron is creating a magnetic field. Some planets don't have molten cores, therefore don't produce this. This process was also kickstarted by the suns solar flares.
The planets known to have magnetic fields are Earth, Mercury, Jupiter, Saturn, Uranus and Neptune. Venus does not have a magnetic field and it is unclear whether Mars has one.
The movements in the liquid inner core.
No molten iron core.
yes
The four Jovian planets in our solar system are Jupiter, Saturn, Uranus and Neptune. The four terrestrial planets are Earth, Venus, Mars and Mercury. The difference between the Jovian planets and the terrestrial planets is that Jovian planets are enormous and made of gasses and ices while terrestrial planets are relatively small and made of rocks and metals. Other differences are that terrestrial planets have high densities, rotate slowly, have no moons or magnetic fields and have thin atmospheres (Earth is an exception because it has a moon and a magnetic field), while Jovian planets have low densities, rotate rapidly, have many moons and a magnetic field and have thick atmospheres.
No. Earth's magnetic field only affects earth, not other planets.
The dynamo. For terrestrial planets, the dynamo is a molten core of nickel-iron. Mercury and Earth have fairly strong dynamos and therefore fairly strong magnetic fields. Venus and Mars do not, and have only weak magnetic fields.
Yes - several planets have magnetic fields that do not even vaguely resemble Earth's current field.
Only planets that have an active iron core. Only planets with a magnetic field
Plants don't have a significant magnetic field. Perhaps you mean "planets"?
The four Jovian planets in our solar system are Jupiter, Saturn, Uranus and Neptune. The four terrestrial planets are Earth, Venus, Mars and Mercury. The difference between the Jovian planets and the terrestrial planets is that Jovian planets are enormous and made of gasses and ices while terrestrial planets are relatively small and made of rocks and metals. Other differences are that terrestrial planets have high densities, rotate slowly, have no moons or magnetic fields and have thin atmospheres (Earth is an exception because it has a moon and a magnetic field), while Jovian planets have low densities, rotate rapidly, have many moons and a magnetic field and have thick atmospheres.
Terrestrial magnetism is the study of magnetic field on earth.
Terrestrial magnetism is the study of magnetic field on earth.
No. Earth's magnetic field only affects earth, not other planets.
Mars has gravity, as do all planets, but not a magnetic field.
The dynamo. For terrestrial planets, the dynamo is a molten core of nickel-iron. Mercury and Earth have fairly strong dynamos and therefore fairly strong magnetic fields. Venus and Mars do not, and have only weak magnetic fields.
Not all of the planets within our solar system have a magnetic field. Venus and Mars are the only ones that don't have a magnetic field (all other planets do have one).
Terrestrial magnetism is the study of magnetic field on earth.
other planets
Other planets
Neptune, Uranus, Saturn, Jupiter, and Earth all have magnetic fields. Mercury has a very weak magnetic field.