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What is the magnetic field of Mars like?
Mars no longer has a magnetic field. Look at earth for a moment. The earth's magnetic field is generally thought to be the product of dynamo action associated with motion (currents) in the molten fluid core of the earth. Other planets that have magnetic fields are, in general, thought to have this same or a similar source for their fields. Mars no longer has a molten core. Our studies have revealed that there are parts of the crust of Mars that have been magnetized. We see that these areas have a residual magnetic field that has been left as an "impression" of the original magnetic field of the red planet. And that field has changed polarity at different times over the period when Mars still actually had a natural magnetic field and it magnetized portions of the crust. A link to the Wikipedia article on Mars is provided.
How might you describe what clouds look like?
White and fluffy like a field full of sheep eating blue grass.
How does the sun get sunspots?
Sunspots are cooler regions of the Sun's surface (they are still really bright, they just look dark compared to the surrounding Sun) they are caused by what are basically magnetic field "tangles" stopping the convection that brings heat to the solar surface.
What stones look like diamonds?
In the field, any clear or translucent stone may be mistaken for a gem-quality diamond. The field test for diamond is 'extreme hardness'. In the jewelery store, many natural gems can appear diamond-like, given the top look of a diamond. Look-alikes can include Moissanite, sapphire, quartz, topaz and so forth. There are also manufactured gemstone look-alikes, generally called CZs.
Did mars used to look like Earth?
yes, Mars did look like the earth. It had liquid water on it. It does not look like earth anymore because the core of the planet cooled down and when that happened it lost its magnate field. The core cooled down faster than earth because mars is small the earth. The earth and mars will die the same way.
Is it true or false that an electric charge creates a magnetic field?
Opposites attract, like charges repel each other.
What does a speed sensor look like?
thick splines on a steel shaft on the hub spindle rotating past a magnetic field.
Only some currents are able to produce magnetic fields?
No. Any current produces a magnetic field. Look at Maxwell's equations.
How does the earths magnetic field help life to be sustained on earth?
the radiation charges or ionizes the air in the upper atmosphere. the charged air conducts and acts like a wire passing thru a magnetic field which shields the earth from other particles and rays look for Van Allen belts
Why is an electric field induced in the human body by time-varying magnetic field gradients in MRI?
Look up Faraday's Law of Induction. A time-varying magnetic field (i.e. a field gradient) induces an electric field. You could think of this as a transformer, in which the gradient coil is the primary and the human body is the secondary!
Can astronomers learn the magnetic field of a star?
Light that comes from the sun is polarized by these magnetic fields. A meter can determine the different directions of the light and detect interference. This interference is known as a magnetic field.
What does the planete Mercure look like?
The planet Mercury looks like our moon. The surface is covered with craters and has a thick iron core.
How does the lighthouse model explain pulsars?
A neutron star contains a powerful magnetic field and spins very rapidly. the spinning magnetic field generates a tremendously powerful electric field, and the filed causes the production of electron positron pairs. As the charged particles are accelerated through the magnetic field, they emit photons in the direction of their motion, which produce powerful beams of electromagnetic radiation emerging from the magnetic poles. Pretty much when you look at it from far away it looks like it blinking at you so that's why they call it the light house model in the same way when your at sea and you see a blinking light in the distance which is a lighthouse. =)
What is the electric field surrounding an electron It's defined as a force vector or warpage of space around the electron - what is this mysterious field made of what is it in a tangible sense?
The electron is surrounded by an electric field. The electric field can be represented by force vectors in models because the field will act on other fields. It will in concert with another field like it to push away, or act with another field opposite it to draw together. It's fairly simple like that. The "problem" with an electric or magnetic field is that is it invisible. Its effects can be seen, but the field itself, the force itself, is invisible. Like gravity. You can't "grab a handful" of gravity and look at it. And you can't do that with electric or magnetic fields, either. It's just there and it works. It works in accordance with the laws of electromagnetics.
Does plastic constrain a magnetic field?
Not really because almost all hydrocarbons, and the magnetic field lines go right through the plastic's like it's invisible. So there u go, just as easy as that, so be careful that you try this experiment first before you use this information, or I promise you that your answer will be totally wrong!
How can you map the field around a magnetic nail?
Place a sheet of paper on top of it then drop some iron filings on the paper.
Magnetostratigraphy takes advantage of the fact that?
As a rock forms, any magnetic elements tend to align with the Earth's magnetic field. This can happen in a number of ways, from tiny grains physically rotating as they sink to form a sedimentary rock, to crystals tending to grow in a certain direction as a volcanic rock cools. Either way, the Earth's magnetic field switches direction occasionally (roughly every 300,000 years). So you can look at the orientation of the magnetic grains in a rock and correlate that to the record of the Earth's magnetic field. This lets you figure out how old it is.
