A weather vane, also known as a wind vane, is a tool that shows the direction the wind is blowing. It typically consists of a freely rotating arrow that points into the direction from which the wind is coming.
The objects you are describing are likely weather vanes. They are traditionally mounted on roofs to show the direction of the wind. In the south, they may take on various decorative shapes such as iron chickens.
A compass is used to show direction on a map. It indicates the cardinal directions (north, south, east, west) and helps orient the map to match the real-world direction.
Water flows downhill. Contour lines show the slope of the landscape, and the direction a stream must flow.
If you bring a magnet close to iron pieces, you will observe that the iron pieces will be pulled towards the magnet. This attraction occurs because iron is a ferromagnetic material, meaning it can be magnetized and is attracted to magnetic fields.
A freely suspended magnet aligns itself in the north-south direction because Earth's magnetic field lines run roughly from the geographic north pole to the south pole. However, the magnet may not point directly to true north due to local magnetic anomalies or the presence of nearby magnetic materials that can influence its orientation.
to show the direction of a magnetic field
A weather vane, also known as a wind vane, is a tool that shows the direction the wind is blowing. It typically consists of a freely rotating arrow that points into the direction from which the wind is coming.
compass is an instrument containing a freely suspended magnetic element which displays the direction of the horizontal component of the Earth's magnetic field at the point of observation. The magnetic compass is an old Chinese invention, probaly first made in China during the Qin dynasty (221-206 B.C.). Chinese fortune tellers used lodestones (a mineral composed of an iron oxide which aligns itself in a north-south direction) to construct their fortune telling boards.
To magnetize an iron nail permanently, you would need to stroke the nail along a magnet multiple times in the same direction. This process aligns the domains in the iron, creating a magnetic field along the nail. A diagram would show the iron nail being stroked along the magnet in one consistent direction to align the domains.
Bar magnets interact with iron filings by creating a magnetic field that causes the iron filings to align along the magnetic field lines, forming patterns that show the shape and direction of the magnetic field.
The Jerry Springer Show - 2012 SUSPENDED was released on: USA: 7 November 2012
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The Daily Show - 1996 17-157 SUSPENDED was released on: USA: 27 September 2012
The Daily Show - 1996 17-156 SUSPENDED was released on: USA: 26 September 2012
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Wind vanes work by using a freely rotating arrow or pointer that aligns itself with the direction of the wind. The vane is designed in a way that the tail end is heavier than the arrow end, causing it to point into the wind. This allows the wind vane to accurately show the direction from which the wind is blowing.