What are the basic requirements for a terrestrial planet to have a global magnetic field?
What are the conditions necessary for a terrestrial planet to have a strong magnetic field? Very high pressures, like those found deep within planetary interiors, can compress rocks so much that they stay solid even when temperatures are high enough to melt them under ordinary conditions.
Which of the following are believed necessary for a planet to have a magnetic field?
It is believed a planet, or a star, can generate a magnetic field if it has both of the two ingredients above. It must have enough magnetic material, and it must have currents moving inside the magnetic material. If a planet does not have enough of either of these two ingredients, it will not have a magnetic field.
Why does the Earth have the strongest magnetic field among the terrestrial worlds?
Of the 4, only Earth has a sufficiently large molten iron core for rotation and convection to provide our strong magnetic field.
Which of the following are believed necessary for a planet to have a magnetic field quizlet?
Name and briefly explain the two things necessary in a planet's interior that enable a planet to have a magnetic field. Rotation and internal heat. The rotation of the planet and the internal heat create moving charges which create the magnetic field.
What is required for a magnetic field?
Although atoms often have many electrons, they mostly 'pair up' in such a way that the overall magnetic field of a pair cancels out. Two electrons paired in this way are said to have opposite spin. So if we want something to be magnetic we need atoms that have one or more unpaired electrons with the same spin.
What is needed to generate a planet’s magnetic field?
If you have a rotating electric current, it will create a magnetic field. On Earth, flowing of liquid metal in the outer core of the planet generates electric currents. The rotation of Earth on its axis causes these electric currents to form a magnetic field which extends around the planet.
What makes the Earth habitable magnetic field?
What makes the Earth habitable? It is the right distance from the Sun, it is protected from harmful solar radiation by its magnetic field, it is kept warm by an insulating atmosphere, and it has the right chemical ingredients for life, including water and carbon.
Why does Earth have the strongest magnetic field among the terrestrial world quizlet?
Why does Earth have the strongest magnetic field among the terrestrial worlds? It is the only one that has both a partially molten metallic core and reasonably rapid rotation. Which of the following most likely explains why Venus does not have a strong magnetic field? Its rotation is too slow.
Which one of the terrestrial worlds has the strongest magnetic field?
Earth's magnetic field is categorized as moderately strong, the gas giants and ice giants have extremely strong magnetic fields, Mercury has a weak magnetic field, while Mars and Venus have no measurable magnetic fields. Jupiter is the largest planet in the Solar System and therefore has the strongest magnetic field.
What are the three main sources of internal heat for terrestrial planets?
The major processes that heat the interiors of the terrestrial worlds are…
- Heat deposited as the planets were built from planetesimals.
- Heat deposited as the planets underwent differentiation.
- Heat released by radioactive decay.
What causes a planet to have a magnetic field quizlet?
All Jovian planets (and the Earth) have strong magnetic fields . They are caused by the rapid rotation and liquid conductive cores or mantles.
What causes Earth’s magnetic field?
Generated by the motion of molten iron in Earth's core, the magnetic field protects our planet from cosmic radiation and from the charged particles emitted by our Sun.
What are the properties of magnetic field?
Magnetic fields can be pictorially represented by magnetic field lines, the properties of which are as follows:
- The field is tangent to the magnetic field line.
- Field strength is proportional to the line density.
- Field lines cannot cross.
- Field lines are continuous loops.
Which of the following is a requirement for a magnetic field to form in the outer core?
For magnetic field generation to occur several conditions must be met: there must be a conducting fluid; there must be enough energy to cause the fluid to move with sufficient speed and with the appropriate flow pattern; there must be a "seed" magnetic field.
How does Earth produce its magnetic field?
Scientists know that today the Earth's magnetic field is powered by the solidification of the planet's liquid iron core. The cooling and crystallization of the core stirs up the surrounding liquid iron, creating powerful electric currents that generate a magnetic field stretching far out into space.
What are the things needed in order for a planet to support life?
What Are the Factors that Make the Planet Habitable?
- It has to be a comfortable distance away from a star (Habitable Zone)
- The stars around it have to be 'stable'.
- It should not have a very low mass.
- It must rotate on its axis and revolve.
- It should have a molten core.
- It should hold an atmosphere.
Jul 8, 2022
What conditions are necessary for life on Earth?
It is useful to categorize the requirements for life on Earth as four items: energy, carbon, liquid water, and various other elements. These are listed in Table 1 along with the occurrence of these factors in the Solar System (2).
Why does Earth have such a strong magnetic field quizlet?
magnetic field? The metallic hydrogen is a superconductor. All Jovian planets (and the Earth) have strong magnetic fields . They are caused by the rapid rotation and liquid conductive cores or mantles.
Which terrestrial planets would you expect to have magnetic fields?
Among the terrestrials, only Earth has a substantial planetary magnetic field. Mars and the Earth's moon have localized regional magnetic fields at different places across their surfaces, but no global field. Of the terrestrial planets, Venus, Earth, and Mars have significant atmospheres.
Which terrestrial planets have a magnetic field?
At the present time, only the Earth and Mercury appear to have a significant dipole magnetic field. However, the Moon, and possibly Mars, appear to have had ancient planetary dynamos.
What are the two main factors that control how a terrestrial planet’s surface will evolve?
The primary factors that appear to make Earth habitable are its relatively large size and its distance from the Sun. Distance from the Sun, along with the greenhouse effect, determines surface temperature.
Do terrestrial planets have magnetic fields?
Probes found that Mars and Venus do not have a significant magnetic field. Jupiter, Saturn, Uranus, and Neptune all have magnetic fields much stronger than that of the Earth. Jupiter is the champion- having the largest magnetic field. The mechanism that causes their magnetic fields is not fully understood.
What are the elements of Earth’s magnetic field?
The Earth's magnetic field is described by seven parameters. These are declination (D), inclination (I), horizontal intensity (H), vertical intensity (Z), total intensity (F) and the north (X) and east (Y) components of the horizontal intensity.
What are the 4 important properties of magnetic field lines?
(i) Magnetic field lines do not intersect each other. (ii) They emerge from north pole and merge/ends at south pole. (iii) They flow from north pole to south pole outside the material and from south pole to north pole within a material. (iv) These lines are closed curves.
What are 4 major properties of a magnet?
What are the 4 properties of magnet
- Magnets will attract ferromagnetic substances.
- Like poles of the magnet repel each other and unlike poles attract each other.
- A suspended magnet always comes to rest in the north-south direction.
- The poles of the magnet are in pairs.
What characteristic of Earth’s interior is likely to be responsible for Earth’s magnetic field?
The Earth's magnetic field is mostly caused by electric currents in the liquid outer core. The Earth's core is hotter than 1043 K, the Curie point temperature above which the orientations of spins within iron become randomized. Such randomization causes the substance to lose its magnetization.
What makes Earth magnetic field?
Scientists know that today the Earth's magnetic field is powered by the solidification of the planet's liquid iron core. The cooling and crystallization of the core stirs up the surrounding liquid iron, creating powerful electric currents that generate a magnetic field stretching far out into space.
What causes Earth’s magnetic field quizlet?
The Earth's magnetic field is believed to be generated by electric currents in the conductive material of its core, created by convection currents due to heat escaping from the core.
What are the two requirements for a planet to become habitable?
Habitable Planets. A "habitable" planet should: Orbit a star that remains stable in output for billions of years. Be at a distance from the star that results in its achieving a suitable temperature so its surface water is liquid, not frozen.
What are the 5 factors that makes a planet habitable?
7 features that make a planet habitable
- Right distance from their star.
- More or less circular orbit.
- Stable rotational axis.
- Some water, but not too much.
- No hydrogen-rich atmosphere.
- Plate tectonics.
- Magnetic field.
Apr 23, 2021